diff --git a/extensions/feishu/package.json b/extensions/feishu/package.json
index af6ad0d1f..d8548a441 100644
--- a/extensions/feishu/package.json
+++ b/extensions/feishu/package.json
@@ -22,7 +22,7 @@
       "selectionLabel": "Feishu (Bot API)",
       "docsPath": "/channels/feishu",
       "docsLabel": "feishu",
-      "blurb": "Feishu bot with HTTP webhook events.",
+      "blurb": "Feishu bot events via webhook or long connection.",
       "aliases": [
         "fs"
       ],
diff --git a/extensions/feishu/src/accounts.ts b/extensions/feishu/src/accounts.ts
index bce65c019..87db013a6 100644
--- a/extensions/feishu/src/accounts.ts
+++ b/extensions/feishu/src/accounts.ts
@@ -52,9 +52,12 @@ function mergeFeishuAccountConfig(cfg: ClawdbotConfig, accountId: string): Feish
 function hasCredentials(cfg: FeishuAccountConfig): boolean {
   const appId = cfg.appId?.trim();
   const appSecret = cfg.appSecret?.trim();
+  if (!appId || !appSecret) return false;
+  const mode = cfg.mode ?? "http";
+  if (mode === "ws") return true;
   const token = cfg.verificationToken?.trim();
   const encryptKey = cfg.encryptKey?.trim();
-  return Boolean(appId && appSecret && (token || encryptKey));
+  return Boolean(token || encryptKey);
 }
 
 export function resolveFeishuAccount(params: {
diff --git a/extensions/feishu/src/channel.ts b/extensions/feishu/src/channel.ts
index 280d2378d..e205d689b 100644
--- a/extensions/feishu/src/channel.ts
+++ b/extensions/feishu/src/channel.ts
@@ -41,7 +41,7 @@ const meta = {
   selectionLabel: "Feishu (Bot API)",
   docsPath: "/channels/feishu",
   docsLabel: "feishu",
-  blurb: "Feishu bot with HTTP webhook events.",
+  blurb: "Feishu bot events via webhook or long connection.",
   aliases: ["fs"],
   order: 85,
   quickstartAllowFrom: true,
@@ -271,6 +271,12 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
       }
       const appId = (input as { appId?: unknown }).appId;
       const appSecret = (input as { appSecret?: unknown }).appSecret;
+      const modeRaw = (input as { mode?: unknown }).mode;
+      const mode =
+        typeof modeRaw === "string" && modeRaw.trim() ? modeRaw.trim().toLowerCase() : undefined;
+      if (mode && mode !== "http" && mode !== "ws") {
+        return 'Feishu --mode must be "http" or "ws".';
+      }
       const verificationToken = (input as { verificationToken?: unknown }).verificationToken;
       const encryptKey = (input as { encryptKey?: unknown }).encryptKey;
       if (typeof appId !== "string" || !appId.trim()) {
@@ -279,11 +285,13 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
       if (typeof appSecret !== "string" || !appSecret.trim()) {
         return "Feishu requires --app-secret.";
       }
-      if (
-        (typeof verificationToken !== "string" || !verificationToken.trim()) &&
-        (typeof encryptKey !== "string" || !encryptKey.trim())
-      ) {
-        return "Feishu requires --verification-token or --encrypt-key.";
+      if (mode !== "ws") {
+        if (
+          (typeof verificationToken !== "string" || !verificationToken.trim()) &&
+          (typeof encryptKey !== "string" || !encryptKey.trim())
+        ) {
+          return 'Feishu requires --verification-token or --encrypt-key when --mode="http".';
+        }
       }
       return null;
     },
@@ -304,6 +312,10 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
 
       const appId = String((input as { appId?: unknown }).appId ?? "").trim();
       const appSecret = String((input as { appSecret?: unknown }).appSecret ?? "").trim();
+      const modeRaw = (input as { mode?: unknown }).mode;
+      const mode =
+        typeof modeRaw === "string" && modeRaw.trim() ? modeRaw.trim().toLowerCase() : undefined;
+      const normalizedMode = mode === "http" || mode === "ws" ? mode : undefined;
       const verificationTokenRaw = (input as { verificationToken?: unknown }).verificationToken;
       const encryptKeyRaw = (input as { encryptKey?: unknown }).encryptKey;
       const verificationToken =
@@ -320,6 +332,7 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
       const configPatch = {
         appId,
         appSecret,
+        ...(normalizedMode ? { mode: normalizedMode } : {}),
         ...(verificationToken ? { verificationToken } : {}),
         ...(encryptKey ? { encryptKey } : {}),
         ...(webhookPath ? { webhookPath } : {}),
@@ -463,6 +476,7 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
       lastStartAt: null,
       lastStopAt: null,
       lastError: null,
+      mode: null,
       webhookPath: null,
       lastInboundAt: null,
       lastOutboundAt: null,
@@ -470,6 +484,7 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
     buildChannelSummary: ({ snapshot }) => ({
       configured: snapshot.configured ?? false,
       running: snapshot.running ?? false,
+      mode: snapshot.mode ?? null,
       webhookPath: snapshot.webhookPath ?? null,
       lastInboundAt: snapshot.lastInboundAt ?? null,
       lastOutboundAt: snapshot.lastOutboundAt ?? null,
@@ -486,6 +501,7 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
       enabled: account.enabled,
       configured: account.credentialSource !== "none",
       credentialSource: account.credentialSource,
+      mode: runtime?.mode ?? account.config.mode ?? "http",
       webhookPath: account.config.webhookPath,
       webhookUrl: account.config.webhookUrl,
       running: runtime?.running ?? false,
@@ -500,14 +516,18 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
   gateway: {
     startAccount: async (ctx) => {
       const account = ctx.account;
-      ctx.log?.info(`[${account.accountId}] starting Feishu webhook`);
+      const mode = account.config.mode ?? "http";
+      ctx.log?.info(
+        `[${account.accountId}] starting Feishu ${mode === "ws" ? "long connection" : "webhook"}`,
+      );
       ctx.setStatus({
         accountId: account.accountId,
         running: true,
         lastStartAt: Date.now(),
-        webhookPath: resolveFeishuWebhookPath({ account }),
+        mode,
+        webhookPath: mode === "http" ? resolveFeishuWebhookPath({ account }) : null,
       });
-      const unregister = await startFeishuMonitor({
+      await startFeishuMonitor({
         account,
         config: ctx.cfg as ClawdbotConfig,
         runtime: ctx.runtime,
@@ -516,14 +536,6 @@ export const feishuPlugin: ChannelPlugin<ResolvedFeishuAccount> = {
         webhookUrl: account.config.webhookUrl,
         statusSink: (patch) => ctx.setStatus({ accountId: account.accountId, ...patch }),
       });
-      return () => {
-        unregister?.();
-        ctx.setStatus({
-          accountId: account.accountId,
-          running: false,
-          lastStopAt: Date.now(),
-        });
-      };
     },
   },
 };
diff --git a/extensions/feishu/src/config-mode.test.ts b/extensions/feishu/src/config-mode.test.ts
new file mode 100644
index 000000000..fb7afe53d
--- /dev/null
+++ b/extensions/feishu/src/config-mode.test.ts
@@ -0,0 +1,41 @@
+import { describe, expect, it } from "vitest";
+
+import type { ClawdbotConfig } from "clawdbot/plugin-sdk";
+
+import { resolveFeishuAccount } from "./accounts.js";
+import { FeishuConfigSchema } from "./config-schema.js";
+
+describe("Feishu config mode", () => {
+  it("allows ws mode without webhook validation secrets", () => {
+    const parsed = FeishuConfigSchema.parse({
+      appId: "cli_test",
+      appSecret: "secret_test",
+      mode: "ws",
+    });
+    expect(parsed.mode).toBe("ws");
+  });
+
+  it("requires webhook validation secrets in http mode", () => {
+    expect(() =>
+      FeishuConfigSchema.parse({
+        appId: "cli_test",
+        appSecret: "secret_test",
+        mode: "http",
+      }),
+    ).toThrow();
+  });
+
+  it("treats ws mode as configured with app credentials", () => {
+    const cfg = {
+      channels: {
+        feishu: {
+          appId: "cli_test",
+          appSecret: "secret_test",
+          mode: "ws",
+        },
+      },
+    } as unknown as ClawdbotConfig;
+    const resolved = resolveFeishuAccount({ cfg, accountId: "default" });
+    expect(resolved.credentialSource).toBe("config");
+  });
+});
diff --git a/extensions/feishu/src/config-schema.ts b/extensions/feishu/src/config-schema.ts
index 0d94bd480..0b87d124f 100644
--- a/extensions/feishu/src/config-schema.ts
+++ b/extensions/feishu/src/config-schema.ts
@@ -37,6 +37,7 @@ export const FeishuAccountSchema = z
     enabled: z.boolean().optional(),
     appId: z.string().optional(),
     appSecret: z.string().optional(),
+    mode: z.enum(["http", "ws"]).optional(),
     verificationToken: z.string().optional(),
     encryptKey: z.string().optional(),
     webhookPath: z.string().optional(),
@@ -68,12 +69,13 @@ export const FeishuAccountSchema = z
         path: ["appId"],
       });
     }
+    const mode = value.mode ?? "http";
     const verificationToken = value.verificationToken?.trim();
     const encryptKey = value.encryptKey?.trim();
-    if ((appId || appSecret) && !verificationToken && !encryptKey) {
+    if (mode === "http" && (appId || appSecret) && !verificationToken && !encryptKey) {
       ctx.addIssue({
         code: z.ZodIssueCode.custom,
-        message: "verificationToken or encryptKey is required for webhook validation",
+        message: 'verificationToken or encryptKey is required when mode="http"',
         path: ["verificationToken"],
       });
     }
diff --git a/extensions/feishu/src/inbound.ts b/extensions/feishu/src/inbound.ts
new file mode 100644
index 000000000..be74590bf
--- /dev/null
+++ b/extensions/feishu/src/inbound.ts
@@ -0,0 +1,448 @@
+import type { ClawdbotConfig, PluginRuntime } from "clawdbot/plugin-sdk";
+import { resolveMentionGatingWithBypass } from "clawdbot/plugin-sdk";
+
+import type { ResolvedFeishuAccount } from "./accounts.js";
+import { getBotIdentity, sendFeishuTextMessage } from "./api.js";
+import type { FeishuMessagingTarget } from "./targets.js";
+
+export type FeishuRuntimeEnv = {
+  log?: (message: string) => void;
+  error?: (message: string) => void;
+};
+
+export type FeishuStatusSink = (patch: { lastInboundAt?: number; lastOutboundAt?: number }) => void;
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return Boolean(value && typeof value === "object" && !Array.isArray(value));
+}
+
+function readString(value: unknown): string | undefined {
+  return typeof value === "string" && value.trim() ? value.trim() : undefined;
+}
+
+function parseJson(raw: string): { ok: true; value: unknown } | { ok: false; error: string } {
+  try {
+    return { ok: true, value: JSON.parse(raw) as unknown };
+  } catch (err) {
+    return { ok: false, error: err instanceof Error ? err.message : String(err) };
+  }
+}
+
+export function parseFeishuTimestampMs(value: string | undefined): number | undefined {
+  const raw = value?.trim();
+  if (!raw) return undefined;
+  const num = Number.parseInt(raw, 10);
+  if (!Number.isFinite(num)) return undefined;
+  if (raw.length >= 13) return num;
+  return num * 1000;
+}
+
+export function extractMentions(value: unknown): Array<Record<string, unknown>> {
+  if (!Array.isArray(value)) return [];
+  return value.filter(isRecord);
+}
+
+function logVerbose(core: PluginRuntime, runtime: FeishuRuntimeEnv, message: string): void {
+  if (core.logging.shouldLogVerbose()) {
+    runtime.log?.(`[feishu] ${message}`);
+  }
+}
+
+function normalizeAllowEntry(raw: string): string {
+  return raw
+    .trim()
+    .replace(/^feishu:/i, "")
+    .replace(/^fs:/i, "")
+    .replace(/^user:/i, "")
+    .replace(/^open_id:/i, "")
+    .replace(/^openid:/i, "")
+    .toLowerCase();
+}
+
+function isSenderAllowed(
+  senderOpenId: string,
+  senderUserId: string | undefined,
+  allowFrom: string[],
+): boolean {
+  if (allowFrom.includes("*")) return true;
+  const openId = normalizeAllowEntry(senderOpenId);
+  const userId = senderUserId?.trim().toLowerCase() ?? "";
+  return allowFrom.some((entry) => {
+    const normalized = normalizeAllowEntry(String(entry));
+    if (!normalized) return false;
+    if (normalized === openId) return true;
+    if (userId && normalized === userId) return true;
+    return false;
+  });
+}
+
+function resolveGroupEntry(account: ResolvedFeishuAccount, chatId: string) {
+  const groups = account.config.groups ?? {};
+  const keys = Object.keys(groups).filter(Boolean);
+  if (keys.length === 0) return { entry: undefined, allowlistConfigured: false };
+  const entry = groups[chatId] ?? groups["*"];
+  return { entry, allowlistConfigured: true };
+}
+
+function extractTextFromMessageContent(content: string): string {
+  const trimmed = content.trim();
+  if (!trimmed) return "";
+  const parsed = parseJson(trimmed);
+  if (parsed.ok && isRecord(parsed.value)) {
+    const text = readString(parsed.value.text);
+    if (text) return text;
+  }
+  return trimmed;
+}
+
+function wasBotMentioned(params: {
+  mentions: Array<Record<string, unknown>>;
+  bot: { openId?: string; userId?: string };
+}): boolean {
+  const botOpenId = params.bot.openId?.trim();
+  const botUserId = params.bot.userId?.trim();
+  if (!botOpenId && !botUserId) return false;
+  return params.mentions.some((mention) => {
+    const id = isRecord(mention.id) ? mention.id : null;
+    const openId = readString((id ?? mention).open_id) ?? readString((id ?? mention).openId);
+    const userId = readString((id ?? mention).user_id) ?? readString((id ?? mention).userId);
+    if (botOpenId && openId && botOpenId === openId) return true;
+    if (botUserId && userId && botUserId === userId) return true;
+    return false;
+  });
+}
+
+async function deliverFeishuReply(params: {
+  payload: { text?: string; mediaUrls?: string[]; mediaUrl?: string; replyToId?: string };
+  account: ResolvedFeishuAccount;
+  target: FeishuMessagingTarget;
+  runtime: FeishuRuntimeEnv;
+  core: PluginRuntime;
+  cfg: ClawdbotConfig;
+  statusSink?: FeishuStatusSink;
+}) {
+  const { payload, account, target, runtime, core, cfg, statusSink } = params;
+  const mediaList = payload.mediaUrls?.length
+    ? payload.mediaUrls
+    : payload.mediaUrl
+      ? [payload.mediaUrl]
+      : [];
+  const replyToMessageId = payload.replyToId?.trim() || undefined;
+
+  let text = payload.text ?? "";
+  if (mediaList.length > 0) {
+    const suffix = mediaList.join("\n");
+    text = text.trim() ? `${text.trim()}\n${suffix}` : suffix;
+  }
+
+  if (!text.trim()) return;
+
+  const chunkLimit = account.config.textChunkLimit ?? 4000;
+  const chunkMode = core.channel.text.resolveChunkMode(cfg, "feishu", account.accountId);
+  const chunks = core.channel.text.chunkMarkdownTextWithMode(text, chunkLimit, chunkMode);
+  for (const chunk of chunks) {
+    try {
+      await sendFeishuTextMessage({
+        account,
+        target,
+        text: chunk,
+        replyToMessageId,
+      });
+      statusSink?.({ lastOutboundAt: Date.now() });
+    } catch (err) {
+      runtime.error?.(`[${account.accountId}] Feishu send failed: ${String(err)}`);
+    }
+  }
+}
+
+export async function processFeishuMessage(params: {
+  account: ResolvedFeishuAccount;
+  config: ClawdbotConfig;
+  runtime: FeishuRuntimeEnv;
+  core: PluginRuntime;
+  statusSink?: FeishuStatusSink;
+  messageId: string;
+  chatId: string;
+  chatType: string;
+  messageType: string;
+  content: string;
+  mentions: Array<Record<string, unknown>>;
+  senderOpenId: string;
+  senderUserId?: string;
+  senderType?: string;
+  createdAt?: number;
+}) {
+  const {
+    account,
+    config,
+    runtime,
+    core,
+    statusSink,
+    messageId,
+    chatId,
+    chatType,
+    messageType,
+    content,
+    mentions,
+    senderOpenId,
+    senderUserId,
+    senderType,
+    createdAt,
+  } = params;
+
+  const isGroup = chatType.toLowerCase() !== "p2p";
+
+  if (senderType && senderType.toLowerCase() !== "user") {
+    logVerbose(core, runtime, `skip non-user sender (type=${senderType})`);
+    return;
+  }
+
+  if (messageType.toLowerCase() !== "text") {
+    logVerbose(core, runtime, `skip non-text message (type=${messageType})`);
+    return;
+  }
+
+  const rawBody = extractTextFromMessageContent(content).trim();
+  if (!rawBody) return;
+
+  const defaultGroupPolicy = config.channels?.defaults?.groupPolicy;
+  const groupPolicy = account.config.groupPolicy ?? defaultGroupPolicy ?? "allowlist";
+  const groupResolved = isGroup ? resolveGroupEntry(account, chatId) : null;
+  const groupEntry = groupResolved?.entry;
+
+  const groupUsers = isGroup
+    ? (groupEntry?.users ?? account.config.groupAllowFrom ?? []).map((v) => String(v))
+    : [];
+
+  if (isGroup) {
+    if (groupPolicy === "disabled") {
+      logVerbose(core, runtime, `drop group message (groupPolicy=disabled, chat=${chatId})`);
+      return;
+    }
+    const allowlistConfigured = groupResolved?.allowlistConfigured ?? false;
+    const allowlisted = Boolean(groupEntry) || Boolean((account.config.groups ?? {})["*"]);
+    if (groupPolicy === "allowlist") {
+      if (!allowlistConfigured) {
+        logVerbose(
+          core,
+          runtime,
+          `drop group message (groupPolicy=allowlist, no allowlist, chat=${chatId})`,
+        );
+        return;
+      }
+      if (!allowlisted) {
+        logVerbose(core, runtime, `drop group message (not allowlisted, chat=${chatId})`);
+        return;
+      }
+    }
+    if (groupEntry?.enabled === false || groupEntry?.allow === false) {
+      logVerbose(core, runtime, `drop group message (group disabled, chat=${chatId})`);
+      return;
+    }
+
+    if (groupUsers.length > 0) {
+      const ok = isSenderAllowed(senderOpenId, senderUserId, groupUsers);
+      if (!ok) {
+        logVerbose(core, runtime, `drop group message (sender not allowed, user=${senderOpenId})`);
+        return;
+      }
+    }
+  }
+
+  const dmPolicy = account.config.dm?.policy ?? "pairing";
+  const configAllowFrom = (account.config.dm?.allowFrom ?? []).map((v) => String(v));
+  const shouldComputeAuth = core.channel.commands.shouldComputeCommandAuthorized(rawBody, config);
+  const storeAllowFrom =
+    !isGroup && (dmPolicy !== "open" || shouldComputeAuth)
+      ? await core.channel.pairing.readAllowFromStore("feishu").catch(() => [])
+      : [];
+  const effectiveAllowFrom = [...configAllowFrom, ...storeAllowFrom];
+  const commandAllowFrom = isGroup ? groupUsers : effectiveAllowFrom;
+  const useAccessGroups = config.commands?.useAccessGroups !== false;
+  const senderAllowedForCommands = isSenderAllowed(senderOpenId, senderUserId, commandAllowFrom);
+  const commandAuthorized = shouldComputeAuth
+    ? core.channel.commands.resolveCommandAuthorizedFromAuthorizers({
+        useAccessGroups,
+        authorizers: [
+          { configured: commandAllowFrom.length > 0, allowed: senderAllowedForCommands },
+        ],
+      })
+    : undefined;
+
+  if (isGroup) {
+    const requireMention = groupEntry?.requireMention ?? account.config.requireMention ?? true;
+    const allowTextCommands = core.channel.commands.shouldHandleTextCommands({
+      cfg: config,
+      surface: "feishu",
+    });
+    let botMentioned = false;
+    if (requireMention) {
+      try {
+        const bot = await getBotIdentity(account).catch(() => null);
+        if (bot?.openId || bot?.userId) {
+          botMentioned = wasBotMentioned({
+            mentions,
+            bot: { openId: bot.openId, userId: bot.userId },
+          });
+        }
+      } catch (err) {
+        logVerbose(core, runtime, `bot identity lookup failed: ${String(err)}`);
+      }
+    }
+
+    const mentionGate = resolveMentionGatingWithBypass({
+      isGroup: true,
+      requireMention,
+      canDetectMention: true,
+      wasMentioned: botMentioned,
+      implicitMention: false,
+      hasAnyMention: mentions.length > 0,
+      allowTextCommands,
+      hasControlCommand: core.channel.text.hasControlCommand(rawBody, config),
+      commandAuthorized: commandAuthorized === true,
+    });
+    if (mentionGate.shouldSkip) {
+      logVerbose(core, runtime, `drop group message (mention required, chat=${chatId})`);
+      return;
+    }
+  }
+
+  if (!isGroup) {
+    if (dmPolicy === "disabled" || account.config.dm?.enabled === false) {
+      logVerbose(core, runtime, `blocked Feishu DM from ${senderOpenId} (dmPolicy=disabled)`);
+      return;
+    }
+
+    if (dmPolicy !== "open") {
+      if (!senderAllowedForCommands) {
+        if (dmPolicy === "pairing") {
+          const { code, created } = await core.channel.pairing.upsertPairingRequest({
+            channel: "feishu",
+            id: senderOpenId,
+            meta: { userId: senderUserId },
+          });
+          if (created) {
+            logVerbose(core, runtime, `feishu pairing request sender=${senderOpenId}`);
+            try {
+              await sendFeishuTextMessage({
+                account,
+                target: { kind: "user", openId: senderOpenId },
+                text: core.channel.pairing.buildPairingReply({
+                  channel: "feishu",
+                  idLine: `Your Feishu open id: ${senderOpenId}`,
+                  code,
+                }),
+              });
+              statusSink?.({ lastOutboundAt: Date.now() });
+            } catch (err) {
+              logVerbose(core, runtime, `pairing reply failed for ${senderOpenId}: ${String(err)}`);
+            }
+          }
+        } else {
+          logVerbose(
+            core,
+            runtime,
+            `blocked unauthorized Feishu sender ${senderOpenId} (dmPolicy=${dmPolicy})`,
+          );
+        }
+        return;
+      }
+    }
+  }
+
+  if (
+    isGroup &&
+    core.channel.commands.isControlCommandMessage(rawBody, config) &&
+    commandAuthorized !== true
+  ) {
+    logVerbose(core, runtime, `feishu: drop control command from ${senderOpenId}`);
+    return;
+  }
+
+  const peerId = isGroup ? chatId : senderOpenId;
+  const route = core.channel.routing.resolveAgentRoute({
+    cfg: config,
+    channel: "feishu",
+    accountId: account.accountId,
+    peer: { kind: isGroup ? "group" : "dm", id: peerId },
+  });
+
+  const fromLabel = isGroup ? `chat:${chatId}` : `user:${senderOpenId}`;
+  const storePath = core.channel.session.resolveStorePath(config.session?.store, {
+    agentId: route.agentId,
+  });
+  const envelopeOptions = core.channel.reply.resolveEnvelopeFormatOptions(config);
+  const previousTimestamp = core.channel.session.readSessionUpdatedAt({
+    storePath,
+    sessionKey: route.sessionKey,
+  });
+  const body = core.channel.reply.formatAgentEnvelope({
+    channel: "Feishu",
+    from: fromLabel,
+    timestamp: createdAt,
+    previousTimestamp,
+    envelope: envelopeOptions,
+    body: rawBody,
+  });
+
+  const groupSystemPrompt = isGroup ? groupEntry?.systemPrompt?.trim() || undefined : undefined;
+
+  const ctxPayload = core.channel.reply.finalizeInboundContext({
+    Body: body,
+    RawBody: rawBody,
+    CommandBody: rawBody,
+    From: `feishu:${senderOpenId}`,
+    To: isGroup ? `feishu:${chatId}` : `feishu:${senderOpenId}`,
+    SessionKey: route.sessionKey,
+    AccountId: route.accountId,
+    ChatType: isGroup ? "channel" : "direct",
+    ConversationLabel: fromLabel,
+    SenderId: senderOpenId,
+    SenderUsername: senderUserId,
+    CommandAuthorized: commandAuthorized,
+    Provider: "feishu",
+    Surface: "feishu",
+    MessageSid: messageId,
+    MessageSidFull: messageId,
+    ReplyToId: messageId,
+    ReplyToIdFull: messageId,
+    GroupSpace: isGroup ? chatId : undefined,
+    GroupSystemPrompt: groupSystemPrompt,
+    OriginatingChannel: "feishu",
+    OriginatingTo: isGroup ? `feishu:${chatId}` : `feishu:${senderOpenId}`,
+  });
+
+  void core.channel.session
+    .recordSessionMetaFromInbound({
+      storePath,
+      sessionKey: ctxPayload.SessionKey ?? route.sessionKey,
+      ctx: ctxPayload,
+    })
+    .catch((err) => {
+      runtime.error?.(`feishu: failed updating session meta: ${String(err)}`);
+    });
+
+  const target: FeishuMessagingTarget = isGroup
+    ? { kind: "chat", chatId }
+    : { kind: "user", openId: senderOpenId };
+  await core.channel.reply.dispatchReplyWithBufferedBlockDispatcher({
+    ctx: ctxPayload,
+    cfg: config,
+    dispatcherOptions: {
+      deliver: async (payload) => {
+        await deliverFeishuReply({
+          payload,
+          account,
+          target,
+          runtime,
+          core,
+          cfg: config,
+          statusSink,
+        });
+      },
+      onError: (err, info) => {
+        runtime.error?.(`[${account.accountId}] Feishu ${info.kind} reply failed: ${String(err)}`);
+      },
+    },
+  });
+}
diff --git a/extensions/feishu/src/monitor.lifecycle.test.ts b/extensions/feishu/src/monitor.lifecycle.test.ts
new file mode 100644
index 000000000..81d2b9613
--- /dev/null
+++ b/extensions/feishu/src/monitor.lifecycle.test.ts
@@ -0,0 +1,80 @@
+import { createServer } from "node:http";
+import type { AddressInfo } from "node:net";
+
+import { describe, expect, it, vi } from "vitest";
+
+import type { ClawdbotConfig, PluginRuntime } from "clawdbot/plugin-sdk";
+
+import type { ResolvedFeishuAccount } from "./accounts.js";
+import { startFeishuMonitor, handleFeishuWebhookRequest } from "./monitor.js";
+import { setFeishuRuntime } from "./runtime.js";
+
+async function withServer(
+  handler: Parameters<typeof createServer>[0],
+  fn: (baseUrl: string) => Promise<void>,
+) {
+  const server = createServer(handler);
+  await new Promise<void>((resolve) => {
+    server.listen(0, "127.0.0.1", () => resolve());
+  });
+  const address = server.address() as AddressInfo | null;
+  if (!address) throw new Error("missing server address");
+  try {
+    await fn(`http://127.0.0.1:${address.port}`);
+  } finally {
+    await new Promise<void>((resolve) => server.close(() => resolve()));
+  }
+}
+
+describe("Feishu monitor lifecycle", () => {
+  it("unregisters webhook targets on abort", async () => {
+    const core = { logging: { shouldLogVerbose: () => false } } as unknown as PluginRuntime;
+    setFeishuRuntime(core);
+
+    const account: ResolvedFeishuAccount = {
+      accountId: "default",
+      enabled: true,
+      config: { mode: "http", verificationToken: "vtok" },
+      credentialSource: "config",
+    };
+    const abort = new AbortController();
+    const error = vi.fn();
+
+    const monitorTask = startFeishuMonitor({
+      account,
+      config: {} as ClawdbotConfig,
+      runtime: { error },
+      abortSignal: abort.signal,
+      webhookPath: "/hook",
+    });
+
+    await withServer(
+      async (req, res) => {
+        const handled = await handleFeishuWebhookRequest(req, res);
+        if (!handled) {
+          res.statusCode = 404;
+          res.end("not found");
+        }
+      },
+      async (baseUrl) => {
+        const payload = { token: "vtok", challenge: "abc", type: "url_verification" };
+        const response = await fetch(`${baseUrl}/hook`, {
+          method: "POST",
+          body: JSON.stringify(payload),
+        });
+        expect(response.status).toBe(200);
+
+        abort.abort();
+        await monitorTask;
+
+        const response2 = await fetch(`${baseUrl}/hook`, {
+          method: "POST",
+          body: JSON.stringify(payload),
+        });
+        expect(response2.status).toBe(404);
+      },
+    );
+
+    expect(error).not.toHaveBeenCalled();
+  });
+});
diff --git a/extensions/feishu/src/monitor.ts b/extensions/feishu/src/monitor.ts
index 01b0952d2..e1d3be236 100644
--- a/extensions/feishu/src/monitor.ts
+++ b/extensions/feishu/src/monitor.ts
@@ -1,18 +1,13 @@
 import type { IncomingMessage, ServerResponse } from "node:http";
 
 import type { ClawdbotConfig } from "clawdbot/plugin-sdk";
-import { resolveMentionGatingWithBypass } from "clawdbot/plugin-sdk";
 
 import type { ResolvedFeishuAccount } from "./accounts.js";
-import { getBotIdentity, sendFeishuTextMessage } from "./api.js";
 import { decryptFeishuEncrypt, verifyFeishuSignature } from "./auth.js";
 import { getFeishuRuntime } from "./runtime.js";
-import type { FeishuMessagingTarget } from "./targets.js";
-
-export type FeishuRuntimeEnv = {
-  log?: (message: string) => void;
-  error?: (message: string) => void;
-};
+import { processFeishuMessage, parseFeishuTimestampMs, extractMentions } from "./inbound.js";
+import type { FeishuRuntimeEnv, FeishuStatusSink } from "./inbound.js";
+import { monitorFeishuLongConnection } from "./ws.js";
 
 export type FeishuMonitorOptions = {
   account: ResolvedFeishuAccount;
@@ -21,7 +16,7 @@ export type FeishuMonitorOptions = {
   abortSignal: AbortSignal;
   webhookPath?: string;
   webhookUrl?: string;
-  statusSink?: (patch: { lastInboundAt?: number; lastOutboundAt?: number }) => void;
+  statusSink?: FeishuStatusSink;
 };
 
 type FeishuCoreRuntime = ReturnType<typeof getFeishuRuntime>;
@@ -32,7 +27,7 @@ type WebhookTarget = {
   runtime: FeishuRuntimeEnv;
   core: FeishuCoreRuntime;
   path: string;
-  statusSink?: (patch: { lastInboundAt?: number; lastOutboundAt?: number }) => void;
+  statusSink?: FeishuStatusSink;
 };
 
 const webhookTargets = new Map<string, WebhookTarget[]>();
@@ -45,12 +40,6 @@ function readString(value: unknown): string | undefined {
   return typeof value === "string" && value.trim() ? value.trim() : undefined;
 }
 
-function logVerbose(core: FeishuCoreRuntime, runtime: FeishuRuntimeEnv, message: string): void {
-  if (core.logging.shouldLogVerbose()) {
-    runtime.log?.(`[feishu] ${message}`);
-  }
-}
-
 function normalizeWebhookPath(raw: string): string {
   const trimmed = raw.trim();
   if (!trimmed) return "/";
@@ -224,419 +213,6 @@ function readHeaderValues(req: IncomingMessage) {
   return { timestamp, nonce, signature };
 }
 
-function parseFeishuTimestampMs(value: string | undefined): number | undefined {
-  const raw = value?.trim();
-  if (!raw) return undefined;
-  const num = Number.parseInt(raw, 10);
-  if (!Number.isFinite(num)) return undefined;
-  if (raw.length >= 13) return num;
-  return num * 1000;
-}
-
-function normalizeAllowEntry(raw: string): string {
-  return raw
-    .trim()
-    .replace(/^feishu:/i, "")
-    .replace(/^fs:/i, "")
-    .replace(/^user:/i, "")
-    .replace(/^open_id:/i, "")
-    .replace(/^openid:/i, "")
-    .toLowerCase();
-}
-
-function isSenderAllowed(
-  senderOpenId: string,
-  senderUserId: string | undefined,
-  allowFrom: string[],
-): boolean {
-  if (allowFrom.includes("*")) return true;
-  const openId = normalizeAllowEntry(senderOpenId);
-  const userId = senderUserId?.trim().toLowerCase() ?? "";
-  return allowFrom.some((entry) => {
-    const normalized = normalizeAllowEntry(String(entry));
-    if (!normalized) return false;
-    if (normalized === openId) return true;
-    if (userId && normalized === userId) return true;
-    return false;
-  });
-}
-
-function resolveGroupEntry(account: ResolvedFeishuAccount, chatId: string) {
-  const groups = account.config.groups ?? {};
-  const keys = Object.keys(groups).filter(Boolean);
-  if (keys.length === 0) return { entry: undefined, allowlistConfigured: false };
-  const entry = groups[chatId] ?? groups["*"];
-  return { entry, allowlistConfigured: true };
-}
-
-function extractTextFromMessageContent(content: string): string {
-  const trimmed = content.trim();
-  if (!trimmed) return "";
-  const parsed = parseJson(trimmed);
-  if (parsed.ok && isRecord(parsed.value)) {
-    const text = readString(parsed.value.text);
-    if (text) return text;
-  }
-  return trimmed;
-}
-
-function extractMentions(value: unknown): Array<Record<string, unknown>> {
-  if (!Array.isArray(value)) return [];
-  return value.filter(isRecord);
-}
-
-function wasBotMentioned(params: {
-  mentions: Array<Record<string, unknown>>;
-  bot: { openId?: string; userId?: string };
-}): boolean {
-  const botOpenId = params.bot.openId?.trim();
-  const botUserId = params.bot.userId?.trim();
-  if (!botOpenId && !botUserId) return false;
-  return params.mentions.some((mention) => {
-    const id = isRecord(mention.id) ? mention.id : null;
-    const openId = readString((id ?? mention).open_id) ?? readString((id ?? mention).openId);
-    const userId = readString((id ?? mention).user_id) ?? readString((id ?? mention).userId);
-    if (botOpenId && openId && botOpenId === openId) return true;
-    if (botUserId && userId && botUserId === userId) return true;
-    return false;
-  });
-}
-
-async function deliverFeishuReply(params: {
-  payload: { text?: string; mediaUrls?: string[]; mediaUrl?: string; replyToId?: string };
-  account: ResolvedFeishuAccount;
-  target: FeishuMessagingTarget;
-  runtime: FeishuRuntimeEnv;
-  core: FeishuCoreRuntime;
-  cfg: ClawdbotConfig;
-  statusSink?: (patch: { lastInboundAt?: number; lastOutboundAt?: number }) => void;
-}) {
-  const { payload, account, target, runtime, core, cfg, statusSink } = params;
-  const mediaList = payload.mediaUrls?.length
-    ? payload.mediaUrls
-    : payload.mediaUrl
-      ? [payload.mediaUrl]
-      : [];
-  const replyToMessageId = payload.replyToId?.trim() || undefined;
-
-  let text = payload.text ?? "";
-  if (mediaList.length > 0) {
-    const suffix = mediaList.join("\n");
-    text = text.trim() ? `${text.trim()}\n${suffix}` : suffix;
-  }
-
-  if (!text.trim()) return;
-
-  const chunkLimit = account.config.textChunkLimit ?? 4000;
-  const chunkMode = core.channel.text.resolveChunkMode(cfg, "feishu", account.accountId);
-  const chunks = core.channel.text.chunkMarkdownTextWithMode(text, chunkLimit, chunkMode);
-  for (const chunk of chunks) {
-    try {
-      await sendFeishuTextMessage({
-        account,
-        target,
-        text: chunk,
-        replyToMessageId,
-      });
-      statusSink?.({ lastOutboundAt: Date.now() });
-    } catch (err) {
-      runtime.error?.(`[${account.accountId}] Feishu send failed: ${String(err)}`);
-    }
-  }
-}
-
-async function processFeishuMessage(params: {
-  account: ResolvedFeishuAccount;
-  config: ClawdbotConfig;
-  runtime: FeishuRuntimeEnv;
-  core: FeishuCoreRuntime;
-  statusSink?: (patch: { lastInboundAt?: number; lastOutboundAt?: number }) => void;
-  messageId: string;
-  chatId: string;
-  chatType: string;
-  messageType: string;
-  content: string;
-  mentions: Array<Record<string, unknown>>;
-  senderOpenId: string;
-  senderUserId?: string;
-  senderType?: string;
-  createdAt?: number;
-}) {
-  const {
-    account,
-    config,
-    runtime,
-    core,
-    statusSink,
-    messageId,
-    chatId,
-    chatType,
-    messageType,
-    content,
-    mentions,
-    senderOpenId,
-    senderUserId,
-    senderType,
-    createdAt,
-  } = params;
-
-  const isGroup = chatType.toLowerCase() !== "p2p";
-
-  if (senderType && senderType.toLowerCase() !== "user") {
-    logVerbose(core, runtime, `skip non-user sender (type=${senderType})`);
-    return;
-  }
-
-  if (messageType.toLowerCase() !== "text") {
-    logVerbose(core, runtime, `skip non-text message (type=${messageType})`);
-    return;
-  }
-
-  const rawBody = extractTextFromMessageContent(content).trim();
-  if (!rawBody) return;
-
-  const defaultGroupPolicy = config.channels?.defaults?.groupPolicy;
-  const groupPolicy = account.config.groupPolicy ?? defaultGroupPolicy ?? "allowlist";
-  const groupResolved = isGroup ? resolveGroupEntry(account, chatId) : null;
-  const groupEntry = groupResolved?.entry;
-
-  const groupUsers = isGroup
-    ? (groupEntry?.users ?? account.config.groupAllowFrom ?? []).map((v) => String(v))
-    : [];
-
-  if (isGroup) {
-    if (groupPolicy === "disabled") {
-      logVerbose(core, runtime, `drop group message (groupPolicy=disabled, chat=${chatId})`);
-      return;
-    }
-    const allowlistConfigured = groupResolved?.allowlistConfigured ?? false;
-    const allowlisted = Boolean(groupEntry) || Boolean((account.config.groups ?? {})["*"]);
-    if (groupPolicy === "allowlist") {
-      if (!allowlistConfigured) {
-        logVerbose(
-          core,
-          runtime,
-          `drop group message (groupPolicy=allowlist, no allowlist, chat=${chatId})`,
-        );
-        return;
-      }
-      if (!allowlisted) {
-        logVerbose(core, runtime, `drop group message (not allowlisted, chat=${chatId})`);
-        return;
-      }
-    }
-    if (groupEntry?.enabled === false || groupEntry?.allow === false) {
-      logVerbose(core, runtime, `drop group message (group disabled, chat=${chatId})`);
-      return;
-    }
-
-    if (groupUsers.length > 0) {
-      const ok = isSenderAllowed(senderOpenId, senderUserId, groupUsers);
-      if (!ok) {
-        logVerbose(core, runtime, `drop group message (sender not allowed, user=${senderOpenId})`);
-        return;
-      }
-    }
-  }
-
-  const dmPolicy = account.config.dm?.policy ?? "pairing";
-  const configAllowFrom = (account.config.dm?.allowFrom ?? []).map((v) => String(v));
-  const shouldComputeAuth = core.channel.commands.shouldComputeCommandAuthorized(rawBody, config);
-  const storeAllowFrom =
-    !isGroup && (dmPolicy !== "open" || shouldComputeAuth)
-      ? await core.channel.pairing.readAllowFromStore("feishu").catch(() => [])
-      : [];
-  const effectiveAllowFrom = [...configAllowFrom, ...storeAllowFrom];
-  const commandAllowFrom = isGroup ? groupUsers : effectiveAllowFrom;
-  const useAccessGroups = config.commands?.useAccessGroups !== false;
-  const senderAllowedForCommands = isSenderAllowed(senderOpenId, senderUserId, commandAllowFrom);
-  const commandAuthorized = shouldComputeAuth
-    ? core.channel.commands.resolveCommandAuthorizedFromAuthorizers({
-        useAccessGroups,
-        authorizers: [
-          { configured: commandAllowFrom.length > 0, allowed: senderAllowedForCommands },
-        ],
-      })
-    : undefined;
-
-  if (isGroup) {
-    const requireMention = groupEntry?.requireMention ?? account.config.requireMention ?? true;
-    const allowTextCommands = core.channel.commands.shouldHandleTextCommands({
-      cfg: config,
-      surface: "feishu",
-    });
-    let botMentioned = false;
-    if (requireMention) {
-      try {
-        const bot = await getBotIdentity(account).catch(() => null);
-        if (bot?.openId || bot?.userId) {
-          botMentioned = wasBotMentioned({
-            mentions,
-            bot: { openId: bot.openId, userId: bot.userId },
-          });
-        }
-      } catch (err) {
-        logVerbose(core, runtime, `bot identity lookup failed: ${String(err)}`);
-      }
-    }
-
-    const mentionGate = resolveMentionGatingWithBypass({
-      isGroup: true,
-      requireMention,
-      canDetectMention: true,
-      wasMentioned: botMentioned,
-      implicitMention: false,
-      hasAnyMention: mentions.length > 0,
-      allowTextCommands,
-      hasControlCommand: core.channel.text.hasControlCommand(rawBody, config),
-      commandAuthorized: commandAuthorized === true,
-    });
-    if (mentionGate.shouldSkip) {
-      logVerbose(core, runtime, `drop group message (mention required, chat=${chatId})`);
-      return;
-    }
-  }
-
-  if (!isGroup) {
-    if (dmPolicy === "disabled" || account.config.dm?.enabled === false) {
-      logVerbose(core, runtime, `blocked Feishu DM from ${senderOpenId} (dmPolicy=disabled)`);
-      return;
-    }
-
-    if (dmPolicy !== "open") {
-      if (!senderAllowedForCommands) {
-        if (dmPolicy === "pairing") {
-          const { code, created } = await core.channel.pairing.upsertPairingRequest({
-            channel: "feishu",
-            id: senderOpenId,
-            meta: { userId: senderUserId },
-          });
-          if (created) {
-            logVerbose(core, runtime, `feishu pairing request sender=${senderOpenId}`);
-            try {
-              await sendFeishuTextMessage({
-                account,
-                target: { kind: "user", openId: senderOpenId },
-                text: core.channel.pairing.buildPairingReply({
-                  channel: "feishu",
-                  idLine: `Your Feishu open id: ${senderOpenId}`,
-                  code,
-                }),
-              });
-              statusSink?.({ lastOutboundAt: Date.now() });
-            } catch (err) {
-              logVerbose(core, runtime, `pairing reply failed for ${senderOpenId}: ${String(err)}`);
-            }
-          }
-        } else {
-          logVerbose(
-            core,
-            runtime,
-            `blocked unauthorized Feishu sender ${senderOpenId} (dmPolicy=${dmPolicy})`,
-          );
-        }
-        return;
-      }
-    }
-  }
-
-  if (
-    isGroup &&
-    core.channel.commands.isControlCommandMessage(rawBody, config) &&
-    commandAuthorized !== true
-  ) {
-    logVerbose(core, runtime, `feishu: drop control command from ${senderOpenId}`);
-    return;
-  }
-
-  const peerId = isGroup ? chatId : senderOpenId;
-  const route = core.channel.routing.resolveAgentRoute({
-    cfg: config,
-    channel: "feishu",
-    accountId: account.accountId,
-    peer: { kind: isGroup ? "group" : "dm", id: peerId },
-  });
-
-  const fromLabel = isGroup ? `chat:${chatId}` : `user:${senderOpenId}`;
-  const storePath = core.channel.session.resolveStorePath(config.session?.store, {
-    agentId: route.agentId,
-  });
-  const envelopeOptions = core.channel.reply.resolveEnvelopeFormatOptions(config);
-  const previousTimestamp = core.channel.session.readSessionUpdatedAt({
-    storePath,
-    sessionKey: route.sessionKey,
-  });
-  const body = core.channel.reply.formatAgentEnvelope({
-    channel: "Feishu",
-    from: fromLabel,
-    timestamp: createdAt,
-    previousTimestamp,
-    envelope: envelopeOptions,
-    body: rawBody,
-  });
-
-  const groupSystemPrompt = isGroup ? groupEntry?.systemPrompt?.trim() || undefined : undefined;
-
-  const ctxPayload = core.channel.reply.finalizeInboundContext({
-    Body: body,
-    RawBody: rawBody,
-    CommandBody: rawBody,
-    From: `feishu:${senderOpenId}`,
-    To: isGroup ? `feishu:${chatId}` : `feishu:${senderOpenId}`,
-    SessionKey: route.sessionKey,
-    AccountId: route.accountId,
-    ChatType: isGroup ? "channel" : "direct",
-    ConversationLabel: fromLabel,
-    SenderId: senderOpenId,
-    SenderUsername: senderUserId,
-    CommandAuthorized: commandAuthorized,
-    Provider: "feishu",
-    Surface: "feishu",
-    MessageSid: messageId,
-    MessageSidFull: messageId,
-    ReplyToId: messageId,
-    ReplyToIdFull: messageId,
-    GroupSpace: isGroup ? chatId : undefined,
-    GroupSystemPrompt: groupSystemPrompt,
-    OriginatingChannel: "feishu",
-    OriginatingTo: isGroup ? `feishu:${chatId}` : `feishu:${senderOpenId}`,
-  });
-
-  void core.channel.session
-    .recordSessionMetaFromInbound({
-      storePath,
-      sessionKey: ctxPayload.SessionKey ?? route.sessionKey,
-      ctx: ctxPayload,
-    })
-    .catch((err) => {
-      runtime.error?.(`feishu: failed updating session meta: ${String(err)}`);
-    });
-
-  const target: FeishuMessagingTarget = isGroup
-    ? { kind: "chat", chatId }
-    : { kind: "user", openId: senderOpenId };
-  await core.channel.reply.dispatchReplyWithBufferedBlockDispatcher({
-    ctx: ctxPayload,
-    cfg: config,
-    dispatcherOptions: {
-      deliver: async (payload) => {
-        await deliverFeishuReply({
-          payload,
-          account,
-          target,
-          runtime,
-          core,
-          cfg: config,
-          statusSink,
-        });
-      },
-      onError: (err, info) => {
-        runtime.error?.(`[${account.accountId}] Feishu ${info.kind} reply failed: ${String(err)}`);
-      },
-    },
-  });
-}
-
 export async function handleFeishuWebhookRequest(
   req: IncomingMessage,
   res: ServerResponse,
@@ -771,12 +347,33 @@ export async function handleFeishuWebhookRequest(
   return true;
 }
 
-export async function startFeishuMonitor(options: FeishuMonitorOptions): Promise<() => void> {
+function waitForAbort(signal: AbortSignal): Promise<void> {
+  if (signal.aborted) return Promise.resolve();
+  return new Promise((resolve) => {
+    signal.addEventListener("abort", () => resolve(), { once: true });
+  });
+}
+
+export async function startFeishuMonitor(options: FeishuMonitorOptions): Promise<void> {
   const core = getFeishuRuntime();
+  const mode = options.account.config.mode ?? "http";
+
+  if (mode === "ws") {
+    await monitorFeishuLongConnection({
+      account: options.account,
+      config: options.config,
+      runtime: options.runtime,
+      abortSignal: options.abortSignal,
+      statusSink: options.statusSink,
+    });
+    return;
+  }
+
   const webhookPath = resolveWebhookPath(options.webhookPath, options.webhookUrl);
   if (!webhookPath) {
     options.runtime.error?.(`[${options.account.accountId}] invalid webhook path`);
-    return () => {};
+    await waitForAbort(options.abortSignal);
+    return;
   }
 
   const unregister = registerFeishuWebhookTarget({
@@ -788,7 +385,11 @@ export async function startFeishuMonitor(options: FeishuMonitorOptions): Promise
     statusSink: options.statusSink,
   });
 
-  return unregister;
+  try {
+    await waitForAbort(options.abortSignal);
+  } finally {
+    unregister();
+  }
 }
 
 export function resolveFeishuWebhookPath(params: { account: ResolvedFeishuAccount }): string {
diff --git a/extensions/feishu/src/onboarding.ts b/extensions/feishu/src/onboarding.ts
index 5462000d7..421d2f589 100644
--- a/extensions/feishu/src/onboarding.ts
+++ b/extensions/feishu/src/onboarding.ts
@@ -43,9 +43,11 @@ async function noteFeishuAppHelp(prompter: WizardPrompter): Promise<void> {
   await prompter.note(
     [
       "1) Create a Feishu app and enable the bot capability",
-      "2) Configure event subscription callback: https://gateway.example.com/feishu",
-      "3) Subscribe to the im.message.receive_v1 event",
-      "4) Copy appId/appSecret + verification token (or encrypt key) into Clawdbot",
+      "2) Subscribe to the im.message.receive_v1 event",
+      "3) Choose one delivery mode:",
+      "   - HTTP callback: configure request URL (e.g. https://gateway.example.com/feishu) and copy the verification token (or encrypt key)",
+      "   - Long connection: enable long connection mode (no public URL required)",
+      "4) Copy appId/appSecret into Clawdbot",
       "Docs: https://docs.clawd.bot/channels/feishu",
     ].join("\n"),
     "Feishu bot app",
@@ -212,32 +214,43 @@ export const feishuOnboardingAdapter: ChannelOnboardingAdapter = {
         }),
       ).trim();
 
-      const validationMode = await prompter.select({
-        message: "Webhook validation",
+      const mode = await prompter.select({
+        message: "Receive events via",
         options: [
-          { value: "token", label: "Verification token", hint: "Simple shared secret check" },
-          { value: "encrypt", label: "Encrypt key", hint: "Signature + encrypted payload" },
+          { value: "http", label: "HTTP callback", hint: "Public webhook URL required" },
+          { value: "ws", label: "Long connection", hint: "WebSocket; no public URL required" },
         ],
-        initialValue: "token",
+        initialValue: resolved.config.mode ?? "http",
       });
 
-      const patch: Record<string, unknown> = { appId, appSecret };
-      if (validationMode === "encrypt") {
-        const encryptKey = String(
-          await prompter.text({
-            message: "Feishu encrypt key",
-            validate: (value) => (String(value ?? "").trim() ? undefined : "Required"),
-          }),
-        ).trim();
-        patch.encryptKey = encryptKey;
-      } else {
-        const verificationToken = String(
-          await prompter.text({
-            message: "Feishu verification token",
-            validate: (value) => (String(value ?? "").trim() ? undefined : "Required"),
-          }),
-        ).trim();
-        patch.verificationToken = verificationToken;
+      const patch: Record<string, unknown> = { appId, appSecret, mode };
+      if (mode === "http") {
+        const validationMode = await prompter.select({
+          message: "Webhook validation",
+          options: [
+            { value: "token", label: "Verification token", hint: "Simple shared secret check" },
+            { value: "encrypt", label: "Encrypt key", hint: "Signature + encrypted payload" },
+          ],
+          initialValue: "token",
+        });
+
+        if (validationMode === "encrypt") {
+          const encryptKey = String(
+            await prompter.text({
+              message: "Feishu encrypt key",
+              validate: (value) => (String(value ?? "").trim() ? undefined : "Required"),
+            }),
+          ).trim();
+          patch.encryptKey = encryptKey;
+        } else {
+          const verificationToken = String(
+            await prompter.text({
+              message: "Feishu verification token",
+              validate: (value) => (String(value ?? "").trim() ? undefined : "Required"),
+            }),
+          ).trim();
+          patch.verificationToken = verificationToken;
+        }
       }
 
       const wantsPath = await prompter.confirm({
diff --git a/extensions/feishu/src/types.config.ts b/extensions/feishu/src/types.config.ts
index e8df8bb6f..ec96de7d8 100644
--- a/extensions/feishu/src/types.config.ts
+++ b/extensions/feishu/src/types.config.ts
@@ -21,6 +21,7 @@ export type FeishuAccountConfig = {
   enabled?: boolean;
   appId?: string;
   appSecret?: string;
+  mode?: "http" | "ws";
   verificationToken?: string;
   encryptKey?: string;
   webhookPath?: string;
diff --git a/extensions/feishu/src/ws.frame.test.ts b/extensions/feishu/src/ws.frame.test.ts
new file mode 100644
index 000000000..e22e4c156
--- /dev/null
+++ b/extensions/feishu/src/ws.frame.test.ts
@@ -0,0 +1,53 @@
+import { describe, expect, it } from "vitest";
+
+import { decodeFeishuLongConnectionFrame, encodeFeishuLongConnectionFrame } from "./ws.js";
+
+describe("Feishu long connection frame codec", () => {
+  it("roundtrips a ping frame", () => {
+    const frame = {
+      SeqID: 0n,
+      LogID: 0n,
+      service: 123,
+      method: 0,
+      headers: [{ key: "type", value: "ping" }],
+    };
+    const encoded = encodeFeishuLongConnectionFrame(frame);
+    expect(Array.from(encoded.slice(0, 8))).toEqual([8, 0, 16, 0, 24, 123, 32, 0]);
+    const decoded = decodeFeishuLongConnectionFrame(encoded);
+    expect(decoded.SeqID).toBe(frame.SeqID);
+    expect(decoded.LogID).toBe(frame.LogID);
+    expect(decoded.service).toBe(frame.service);
+    expect(decoded.method).toBe(frame.method);
+    expect(decoded.headers).toEqual(frame.headers);
+    expect(decoded.payload).toBeUndefined();
+  });
+
+  it("roundtrips frames with payload and metadata", () => {
+    const payload = new TextEncoder().encode(JSON.stringify({ code: 200 }));
+    const frame = {
+      SeqID: 12n,
+      LogID: 34n,
+      service: 9,
+      method: 1,
+      headers: [
+        { key: "type", value: "event" },
+        { key: "message_id", value: "m_1" },
+      ],
+      payloadEncoding: "raw",
+      payloadType: "json",
+      LogIDNew: "log_1",
+      payload,
+    };
+    const encoded = encodeFeishuLongConnectionFrame(frame);
+    const decoded = decodeFeishuLongConnectionFrame(encoded);
+    expect(decoded.SeqID).toBe(frame.SeqID);
+    expect(decoded.LogID).toBe(frame.LogID);
+    expect(decoded.service).toBe(frame.service);
+    expect(decoded.method).toBe(frame.method);
+    expect(decoded.headers).toEqual(frame.headers);
+    expect(decoded.payloadEncoding).toBe("raw");
+    expect(decoded.payloadType).toBe("json");
+    expect(decoded.LogIDNew).toBe("log_1");
+    expect(decoded.payload).toEqual(payload);
+  });
+});
diff --git a/extensions/feishu/src/ws.ts b/extensions/feishu/src/ws.ts
new file mode 100644
index 000000000..b68fcf8b6
--- /dev/null
+++ b/extensions/feishu/src/ws.ts
@@ -0,0 +1,824 @@
+import type { ClawdbotConfig, PluginRuntime } from "clawdbot/plugin-sdk";
+
+import type { ResolvedFeishuAccount } from "./accounts.js";
+import { decryptFeishuEncrypt } from "./auth.js";
+import { getFeishuRuntime } from "./runtime.js";
+import {
+  extractMentions,
+  parseFeishuTimestampMs,
+  processFeishuMessage,
+  type FeishuRuntimeEnv,
+  type FeishuStatusSink,
+} from "./inbound.js";
+
+type FeishuLongConnectionOptions = {
+  account: ResolvedFeishuAccount;
+  config: ClawdbotConfig;
+  runtime: FeishuRuntimeEnv;
+  abortSignal: AbortSignal;
+  statusSink?: FeishuStatusSink;
+};
+
+type FeishuWsConnectConfig = {
+  connectUrl: string;
+  serviceId: number;
+  pingIntervalMs: number;
+  reconnectCount: number;
+  reconnectIntervalMs: number;
+  reconnectNonceMs: number;
+};
+
+type FrameHeader = { key: string; value: string };
+
+type FrameMessage = {
+  SeqID: bigint;
+  LogID: bigint;
+  service: number;
+  method: number;
+  headers: FrameHeader[];
+  payloadEncoding?: string;
+  payloadType?: string;
+  payload?: Uint8Array;
+  LogIDNew?: string;
+};
+
+const FEISHU_WS_CONFIG_URL = "https://open.feishu.cn/callback/ws/endpoint";
+
+const FRAME_TYPE_CONTROL = 0;
+const FRAME_TYPE_DATA = 1;
+
+const MESSAGE_TYPE_EVENT = "event";
+const MESSAGE_TYPE_PING = "ping";
+const MESSAGE_TYPE_PONG = "pong";
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return Boolean(value && typeof value === "object" && !Array.isArray(value));
+}
+
+function readString(value: unknown): string | undefined {
+  return typeof value === "string" && value.trim() ? value.trim() : undefined;
+}
+
+function parseJson(raw: string): { ok: true; value: unknown } | { ok: false; error: string } {
+  try {
+    return { ok: true, value: JSON.parse(raw) as unknown };
+  } catch (err) {
+    return { ok: false, error: err instanceof Error ? err.message : String(err) };
+  }
+}
+
+async function sleepMs(ms: number, signal: AbortSignal): Promise<void> {
+  const delay = Math.max(0, ms);
+  if (delay === 0 || signal.aborted) return;
+  await new Promise<void>((resolve) => {
+    const id = setTimeout(() => {
+      signal.removeEventListener("abort", onAbort);
+      resolve();
+    }, delay);
+    const onAbort = () => {
+      clearTimeout(id);
+      resolve();
+    };
+    signal.addEventListener("abort", onAbort, { once: true });
+  });
+}
+
+async function fetchConnectConfig(
+  options: FeishuLongConnectionOptions,
+): Promise<FeishuWsConnectConfig> {
+  const appId = options.account.config.appId?.trim() ?? "";
+  const appSecret = options.account.config.appSecret?.trim() ?? "";
+  if (!appId || !appSecret) {
+    throw new Error("Feishu long connection requires appId/appSecret");
+  }
+
+  const controller = new AbortController();
+  const onAbort = () => controller.abort();
+  options.abortSignal.addEventListener("abort", onAbort, { once: true });
+  const timeoutId = setTimeout(() => controller.abort(), 15_000);
+  try {
+    const res = await fetch(FEISHU_WS_CONFIG_URL, {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+        locale: "zh",
+      },
+      body: JSON.stringify({ AppID: appId, AppSecret: appSecret }),
+      signal: controller.signal,
+    });
+    const text = await res.text();
+    const payload = text.trim() ? parseJson(text) : { ok: true as const, value: null };
+    if (!payload.ok) {
+      throw new Error(`Feishu ws config returned invalid JSON: ${payload.error}`);
+    }
+    if (!isRecord(payload.value)) {
+      throw new Error(`Feishu ws config returned invalid payload (status=${res.status})`);
+    }
+    const code = typeof payload.value.code === "number" ? payload.value.code : -1;
+    const msg = readString(payload.value.msg) ?? "request failed";
+    if (!res.ok || code !== 0) {
+      throw new Error(`Feishu ws config failed: code=${code} msg=${msg}`);
+    }
+    const data = isRecord(payload.value.data) ? payload.value.data : null;
+    const connectUrl = data ? readString(data.URL) : undefined;
+    const clientConfig = data && isRecord(data.ClientConfig) ? data.ClientConfig : null;
+    if (!connectUrl || !clientConfig) {
+      throw new Error("Feishu ws config missing URL/ClientConfig");
+    }
+
+    let serviceId = 0;
+    try {
+      const url = new URL(connectUrl);
+      const raw = url.searchParams.get("service_id")?.trim() ?? "";
+      serviceId = Number.parseInt(raw, 10);
+    } catch {
+      serviceId = 0;
+    }
+    if (!Number.isFinite(serviceId) || serviceId <= 0) {
+      throw new Error("Feishu ws config missing service_id");
+    }
+
+    const pingIntervalSec =
+      typeof clientConfig.PingInterval === "number" ? clientConfig.PingInterval : 0;
+    const reconnectCount =
+      typeof clientConfig.ReconnectCount === "number" ? clientConfig.ReconnectCount : -1;
+    const reconnectIntervalSec =
+      typeof clientConfig.ReconnectInterval === "number" ? clientConfig.ReconnectInterval : 0;
+    const reconnectNonceSec =
+      typeof clientConfig.ReconnectNonce === "number" ? clientConfig.ReconnectNonce : 0;
+    const pingIntervalMs = Math.max(5_000, Math.floor(pingIntervalSec * 1000));
+    const reconnectIntervalMs = Math.max(1_000, Math.floor(reconnectIntervalSec * 1000));
+    const reconnectNonceMs = Math.max(0, Math.floor(reconnectNonceSec * 1000));
+
+    return {
+      connectUrl,
+      serviceId,
+      pingIntervalMs,
+      reconnectCount,
+      reconnectIntervalMs,
+      reconnectNonceMs,
+    };
+  } finally {
+    clearTimeout(timeoutId);
+    options.abortSignal.removeEventListener("abort", onAbort);
+  }
+}
+
+async function connectWebSocket(params: {
+  url: string;
+  abortSignal: AbortSignal;
+}): Promise<WebSocket> {
+  if (params.abortSignal.aborted) {
+    throw new Error("aborted");
+  }
+  const ws = new WebSocket(params.url);
+  ws.binaryType = "arraybuffer";
+  await new Promise<void>((resolve, reject) => {
+    const onAbort = () => {
+      cleanup();
+      try {
+        ws.close();
+      } finally {
+        reject(new Error("aborted"));
+      }
+    };
+    const onOpen = () => {
+      cleanup();
+      resolve();
+    };
+    const onError = () => {
+      cleanup();
+      reject(new Error("websocket error"));
+    };
+    const cleanup = () => {
+      ws.removeEventListener("open", onOpen);
+      ws.removeEventListener("error", onError);
+      params.abortSignal.removeEventListener("abort", onAbort);
+    };
+    ws.addEventListener("open", onOpen);
+    ws.addEventListener("error", onError);
+    params.abortSignal.addEventListener("abort", onAbort, { once: true });
+  });
+  return ws;
+}
+
+function encodeVarint(value: bigint): number[] {
+  const bytes: number[] = [];
+  let remaining = value;
+  while (remaining >= 0x80n) {
+    bytes.push(Number(remaining & 0x7fn) | 0x80);
+    remaining >>= 7n;
+  }
+  bytes.push(Number(remaining));
+  return bytes;
+}
+
+function decodeVarint(data: Uint8Array, offset: number): { value: bigint; offset: number } {
+  let value = 0n;
+  let shift = 0n;
+  let pos = offset;
+  while (pos < data.length) {
+    const byte = data[pos++];
+    value |= BigInt(byte & 0x7f) << shift;
+    if ((byte & 0x80) === 0) {
+      return { value, offset: pos };
+    }
+    shift += 7n;
+    if (shift > 70n) {
+      throw new Error("varint overflow");
+    }
+  }
+  throw new Error("unexpected EOF");
+}
+
+function encodeStringField(tag: number, value: string): number[] {
+  const encoder = new TextEncoder();
+  const bytes = encoder.encode(value);
+  return [tag, ...encodeVarint(BigInt(bytes.length)), ...Array.from(bytes)];
+}
+
+function encodeBytesField(tag: number, value: Uint8Array): number[] {
+  return [tag, ...encodeVarint(BigInt(value.length)), ...Array.from(value)];
+}
+
+function decodeString(data: Uint8Array): string {
+  return new TextDecoder().decode(data);
+}
+
+function decodeLengthDelimited(
+  data: Uint8Array,
+  offset: number,
+): { bytes: Uint8Array; offset: number } {
+  const len = decodeVarint(data, offset);
+  const length = Number(len.value);
+  if (!Number.isFinite(length) || length < 0) {
+    throw new Error("invalid length-delimited field");
+  }
+  const start = len.offset;
+  const end = start + length;
+  if (end > data.length) {
+    throw new Error("unexpected EOF");
+  }
+  return { bytes: data.subarray(start, end), offset: end };
+}
+
+function encodeHeader(header: FrameHeader): number[] {
+  const keyField = encodeStringField(10, header.key);
+  const valueField = encodeStringField(18, header.value);
+  const body = [...keyField, ...valueField];
+  return [42, ...encodeVarint(BigInt(body.length)), ...body];
+}
+
+function decodeHeader(data: Uint8Array): FrameHeader {
+  let offset = 0;
+  let key = "";
+  let value = "";
+  while (offset < data.length) {
+    const tag = decodeVarint(data, offset);
+    offset = tag.offset;
+    const fieldNumber = Number(tag.value >> 3n);
+    const wireType = Number(tag.value & 7n);
+    if (wireType !== 2) {
+      throw new Error("invalid header encoding");
+    }
+    const field = decodeLengthDelimited(data, offset);
+    offset = field.offset;
+    const decoded = decodeString(field.bytes);
+    if (fieldNumber === 1) key = decoded;
+    if (fieldNumber === 2) value = decoded;
+  }
+  return { key, value };
+}
+
+export function encodeFeishuLongConnectionFrame(frame: FrameMessage): Uint8Array {
+  const out: number[] = [];
+  out.push(8, ...encodeVarint(frame.SeqID));
+  out.push(16, ...encodeVarint(frame.LogID));
+  out.push(24, ...encodeVarint(BigInt(frame.service)));
+  out.push(32, ...encodeVarint(BigInt(frame.method)));
+  for (const header of frame.headers) {
+    out.push(...encodeHeader(header));
+  }
+  if (frame.payloadEncoding) {
+    out.push(...encodeStringField(50, frame.payloadEncoding));
+  }
+  if (frame.payloadType) {
+    out.push(...encodeStringField(58, frame.payloadType));
+  }
+  if (frame.payload) {
+    out.push(...encodeBytesField(66, frame.payload));
+  }
+  if (frame.LogIDNew) {
+    out.push(...encodeStringField(74, frame.LogIDNew));
+  }
+  return Uint8Array.from(out);
+}
+
+export function decodeFeishuLongConnectionFrame(data: Uint8Array): FrameMessage {
+  let offset = 0;
+  let SeqID: bigint | null = null;
+  let LogID: bigint | null = null;
+  let service: number | null = null;
+  let method: number | null = null;
+  const headers: FrameHeader[] = [];
+  let payloadEncoding: string | undefined;
+  let payloadType: string | undefined;
+  let payload: Uint8Array | undefined;
+  let LogIDNew: string | undefined;
+
+  while (offset < data.length) {
+    const tag = decodeVarint(data, offset);
+    offset = tag.offset;
+    const fieldNumber = Number(tag.value >> 3n);
+    const wireType = Number(tag.value & 7n);
+
+    if (fieldNumber === 1 && wireType === 0) {
+      const v = decodeVarint(data, offset);
+      SeqID = v.value;
+      offset = v.offset;
+      continue;
+    }
+    if (fieldNumber === 2 && wireType === 0) {
+      const v = decodeVarint(data, offset);
+      LogID = v.value;
+      offset = v.offset;
+      continue;
+    }
+    if (fieldNumber === 3 && wireType === 0) {
+      const v = decodeVarint(data, offset);
+      service = Number(v.value);
+      offset = v.offset;
+      continue;
+    }
+    if (fieldNumber === 4 && wireType === 0) {
+      const v = decodeVarint(data, offset);
+      method = Number(v.value);
+      offset = v.offset;
+      continue;
+    }
+    if (fieldNumber === 5 && wireType === 2) {
+      const field = decodeLengthDelimited(data, offset);
+      offset = field.offset;
+      headers.push(decodeHeader(field.bytes));
+      continue;
+    }
+    if (fieldNumber === 6 && wireType === 2) {
+      const field = decodeLengthDelimited(data, offset);
+      offset = field.offset;
+      payloadEncoding = decodeString(field.bytes);
+      continue;
+    }
+    if (fieldNumber === 7 && wireType === 2) {
+      const field = decodeLengthDelimited(data, offset);
+      offset = field.offset;
+      payloadType = decodeString(field.bytes);
+      continue;
+    }
+    if (fieldNumber === 8 && wireType === 2) {
+      const field = decodeLengthDelimited(data, offset);
+      offset = field.offset;
+      payload = field.bytes;
+      continue;
+    }
+    if (fieldNumber === 9 && wireType === 2) {
+      const field = decodeLengthDelimited(data, offset);
+      offset = field.offset;
+      LogIDNew = decodeString(field.bytes);
+      continue;
+    }
+
+    if (wireType === 0) {
+      const v = decodeVarint(data, offset);
+      offset = v.offset;
+      continue;
+    }
+    if (wireType === 1) {
+      offset += 8;
+      continue;
+    }
+    if (wireType === 2) {
+      const field = decodeLengthDelimited(data, offset);
+      offset = field.offset;
+      continue;
+    }
+    if (wireType === 5) {
+      offset += 4;
+      continue;
+    }
+    throw new Error(`unsupported wireType=${wireType}`);
+  }
+
+  if (SeqID == null || LogID == null || service == null || method == null) {
+    throw new Error("invalid frame missing required fields");
+  }
+
+  return {
+    SeqID,
+    LogID,
+    service,
+    method,
+    headers,
+    payloadEncoding,
+    payloadType,
+    payload,
+    LogIDNew,
+  };
+}
+
+function resolveHeaderMap(headers: FrameHeader[]): Record<string, string> {
+  const map: Record<string, string> = {};
+  for (const header of headers) {
+    const key = header.key.trim();
+    if (!key) continue;
+    map[key] = String(header.value ?? "");
+  }
+  return map;
+}
+
+function buildControlPingFrame(params: { serviceId: number }): FrameMessage {
+  return {
+    SeqID: 0n,
+    LogID: 0n,
+    service: params.serviceId,
+    method: FRAME_TYPE_CONTROL,
+    headers: [{ key: "type", value: MESSAGE_TYPE_PING }],
+  };
+}
+
+function buildAckFrame(params: { request: FrameMessage; code: number }): FrameMessage {
+  const payload = new TextEncoder().encode(JSON.stringify({ code: params.code }));
+  return {
+    SeqID: params.request.SeqID,
+    LogID: params.request.LogID,
+    service: params.request.service,
+    method: params.request.method,
+    headers: [...params.request.headers, { key: "biz_rt", value: "0" }],
+    payloadEncoding: params.request.payloadEncoding,
+    payloadType: params.request.payloadType,
+    LogIDNew: params.request.LogIDNew,
+    payload,
+  };
+}
+
+type ChunkBuffer = {
+  parts: Array<Uint8Array | undefined>;
+  received: number;
+  createdAt: number;
+};
+
+function mergeChunks(buffer: ChunkBuffer): Uint8Array | null {
+  if (!buffer.parts.every(Boolean)) return null;
+  const combinedLength = buffer.parts.reduce((acc, cur) => acc + (cur?.length ?? 0), 0);
+  const combined = new Uint8Array(combinedLength);
+  let offset = 0;
+  for (const part of buffer.parts) {
+    if (!part) continue;
+    combined.set(part, offset);
+    offset += part.length;
+  }
+  return combined;
+}
+
+async function normalizeWebSocketData(data: unknown): Promise<Uint8Array | null> {
+  if (typeof data === "string") {
+    return new TextEncoder().encode(data);
+  }
+  if (data instanceof ArrayBuffer) {
+    return new Uint8Array(data);
+  }
+  if (ArrayBuffer.isView(data)) {
+    return new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
+  }
+  if (typeof Blob !== "undefined" && data instanceof Blob) {
+    const buf = await data.arrayBuffer();
+    return new Uint8Array(buf);
+  }
+  return null;
+}
+
+function decryptEnvelopeIfNeeded(params: {
+  envelope: Record<string, unknown>;
+  encryptKey?: string;
+}): Record<string, unknown> {
+  const encrypt = readString(params.envelope.encrypt);
+  if (!encrypt) return params.envelope;
+  const encryptKey = params.encryptKey?.trim();
+  if (!encryptKey) return params.envelope;
+
+  const { encrypt: _ignored, ...rest } = params.envelope;
+  try {
+    const decrypted = decryptFeishuEncrypt({ encrypt, encryptKey });
+    const parsed = parseJson(decrypted);
+    if (!parsed.ok || !isRecord(parsed.value)) return params.envelope;
+    return { ...parsed.value, ...rest };
+  } catch {
+    return params.envelope;
+  }
+}
+
+type FeishuExtractedMessage = {
+  messageId: string;
+  chatId: string;
+  chatType: string;
+  messageType: string;
+  content: string;
+  mentions: Array<Record<string, unknown>>;
+  senderOpenId: string;
+  senderUserId?: string;
+  senderType?: string;
+  createdAt?: number;
+};
+
+function extractFeishuMessageFromEnvelope(
+  envelope: Record<string, unknown>,
+): FeishuExtractedMessage | null {
+  const eventType = readString(isRecord(envelope.header) ? envelope.header.event_type : undefined);
+  if (eventType !== "im.message.receive_v1") return null;
+  const event = isRecord(envelope.event) ? envelope.event : null;
+  const message = event && isRecord(event.message) ? event.message : null;
+  const sender = event && isRecord(event.sender) ? event.sender : null;
+  if (!message || !sender) return null;
+
+  const messageId =
+    readString(message.message_id) ?? readString(message.messageId) ?? readString(message.id) ?? "";
+  const chatId = readString(message.chat_id) ?? readString(message.chatId) ?? "";
+  const chatType = readString(message.chat_type) ?? readString(message.chatType) ?? "";
+  const messageType = readString(message.message_type) ?? readString(message.messageType) ?? "";
+  const content = readString(message.content) ?? "";
+  if (!messageId || !chatId || !chatType || !messageType || !content) return null;
+
+  const senderId = isRecord(sender.sender_id) ? sender.sender_id : null;
+  const senderOpenId =
+    readString((senderId ?? sender).open_id) ?? readString((senderId ?? sender).openId) ?? "";
+  const senderUserId =
+    readString((senderId ?? sender).user_id) ?? readString((senderId ?? sender).userId);
+  const senderType = readString(sender.sender_type) ?? readString(sender.senderType);
+  if (!senderOpenId) return null;
+
+  const mentions = extractMentions(message.mentions);
+  const createdAt = parseFeishuTimestampMs(
+    readString(isRecord(envelope.header) ? envelope.header.create_time : undefined),
+  );
+
+  return {
+    messageId,
+    chatId,
+    chatType,
+    messageType,
+    content,
+    mentions,
+    senderOpenId,
+    senderUserId,
+    senderType,
+    createdAt,
+  };
+}
+
+async function handleEventPayload(params: {
+  core: PluginRuntime;
+  account: ResolvedFeishuAccount;
+  config: ClawdbotConfig;
+  runtime: FeishuRuntimeEnv;
+  statusSink?: FeishuStatusSink;
+  event: unknown;
+}) {
+  if (!isRecord(params.event)) return;
+  const normalized = decryptEnvelopeIfNeeded({
+    envelope: params.event,
+    encryptKey: params.account.config.encryptKey,
+  });
+  const token =
+    readString(normalized.token) ??
+    readString(isRecord(normalized.header) ? normalized.header.token : undefined);
+  const configuredToken = params.account.config.verificationToken?.trim();
+  if (configuredToken && token && configuredToken !== token) {
+    return;
+  }
+  const extracted = extractFeishuMessageFromEnvelope(normalized);
+  if (!extracted) return;
+
+  params.statusSink?.({ lastInboundAt: Date.now() });
+  void processFeishuMessage({
+    account: params.account,
+    config: params.config,
+    runtime: params.runtime,
+    core: params.core,
+    statusSink: params.statusSink,
+    ...extracted,
+  }).catch((err) => {
+    params.runtime.error?.(
+      `[${params.account.accountId}] Feishu long connection handler failed: ${String(err)}`,
+    );
+  });
+}
+
+async function monitorSingleSession(params: {
+  ws: WebSocket;
+  connectConfig: FeishuWsConnectConfig;
+  options: FeishuLongConnectionOptions;
+  core: PluginRuntime;
+}): Promise<void> {
+  const { ws, connectConfig, options, core } = params;
+  const decoder = new TextDecoder();
+  const chunkCache = new Map<string, ChunkBuffer>();
+  const pingState = { intervalMs: connectConfig.pingIntervalMs };
+  let pingTimer: ReturnType<typeof setTimeout> | null = null;
+
+  const schedulePing = () => {
+    if (options.abortSignal.aborted) return;
+    if (pingTimer) clearTimeout(pingTimer);
+    pingTimer = setTimeout(() => {
+      if (ws.readyState === WebSocket.OPEN) {
+        try {
+          const ping = buildControlPingFrame({ serviceId: connectConfig.serviceId });
+          ws.send(encodeFeishuLongConnectionFrame(ping));
+        } catch (err) {
+          options.runtime.error?.(
+            `[${options.account.accountId}] Feishu ping failed: ${String(err)}`,
+          );
+        }
+      }
+      schedulePing();
+    }, pingState.intervalMs);
+  };
+
+  const clearCache = () => {
+    chunkCache.clear();
+  };
+
+  const handleControlFrame = (frame: FrameMessage) => {
+    const headerMap = resolveHeaderMap(frame.headers);
+    const type = headerMap.type?.trim().toLowerCase();
+    if (type === MESSAGE_TYPE_PONG && frame.payload) {
+      const payload = decoder.decode(frame.payload);
+      const parsed = parseJson(payload);
+      if (parsed.ok && isRecord(parsed.value)) {
+        const PingInterval =
+          typeof parsed.value.PingInterval === "number" ? parsed.value.PingInterval : undefined;
+        if (typeof PingInterval === "number" && PingInterval > 0) {
+          pingState.intervalMs = Math.max(5_000, Math.floor(PingInterval * 1000));
+          schedulePing();
+        }
+      }
+    }
+  };
+
+  const handleDataFrame = async (frame: FrameMessage) => {
+    const headerMap = resolveHeaderMap(frame.headers);
+    const type = headerMap.type?.trim().toLowerCase();
+    if (type !== MESSAGE_TYPE_EVENT) return;
+
+    const messageId = headerMap.message_id?.trim() ?? "";
+    const sum = Number.parseInt(headerMap.sum ?? "", 10);
+    const seq = Number.parseInt(headerMap.seq ?? "", 10);
+    if (!messageId || !Number.isFinite(sum) || !Number.isFinite(seq) || sum <= 0 || seq < 0) {
+      return;
+    }
+
+    const payload = frame.payload;
+    if (!payload || payload.length === 0) return;
+
+    const existing = chunkCache.get(messageId);
+    const buffer =
+      existing ??
+      ({
+        parts: new Array(sum).fill(undefined),
+        received: 0,
+        createdAt: Date.now(),
+      } satisfies ChunkBuffer);
+    if (!existing) chunkCache.set(messageId, buffer);
+
+    if (!buffer.parts[seq]) {
+      buffer.parts[seq] = payload;
+      buffer.received += 1;
+    }
+
+    const merged = mergeChunks(buffer);
+    if (!merged) return;
+    chunkCache.delete(messageId);
+
+    const raw = decoder.decode(merged);
+    const parsed = parseJson(raw);
+    if (!parsed.ok) {
+      if (core.logging.shouldLogVerbose()) {
+        options.runtime.error?.(
+          `[${options.account.accountId}] Feishu long connection invalid JSON: ${parsed.error}`,
+        );
+      }
+      ws.send(encodeFeishuLongConnectionFrame(buildAckFrame({ request: frame, code: 500 })));
+      return;
+    }
+
+    ws.send(encodeFeishuLongConnectionFrame(buildAckFrame({ request: frame, code: 200 })));
+    await handleEventPayload({
+      core,
+      account: options.account,
+      config: options.config,
+      runtime: options.runtime,
+      statusSink: options.statusSink,
+      event: parsed.value,
+    });
+  };
+
+  const closePromise = new Promise<void>((resolve) => {
+    const onAbort = () => {
+      cleanup();
+      try {
+        if (ws.readyState === WebSocket.OPEN || ws.readyState === WebSocket.CONNECTING) {
+          ws.close();
+        }
+      } finally {
+        resolve();
+      }
+    };
+    const onClose = () => {
+      cleanup();
+      resolve();
+    };
+    const onMessage = (event: { data: unknown }) => {
+      void (async () => {
+        const bytes = await normalizeWebSocketData(event.data);
+        if (!bytes) return;
+        const frame = decodeFeishuLongConnectionFrame(bytes);
+        if (frame.method === FRAME_TYPE_CONTROL) {
+          handleControlFrame(frame);
+          return;
+        }
+        if (frame.method === FRAME_TYPE_DATA) {
+          await handleDataFrame(frame);
+        }
+      })().catch((err) => {
+        options.runtime.error?.(
+          `[${options.account.accountId}] Feishu long connection message failed: ${String(err)}`,
+        );
+      });
+    };
+    const onError = () => {
+      // The close event triggers the reconnect loop.
+    };
+    const cleanup = () => {
+      ws.removeEventListener("close", onClose);
+      ws.removeEventListener("message", onMessage);
+      ws.removeEventListener("error", onError);
+      options.abortSignal.removeEventListener("abort", onAbort);
+      if (pingTimer) clearTimeout(pingTimer);
+      pingTimer = null;
+      clearCache();
+    };
+    ws.addEventListener("close", onClose);
+    ws.addEventListener("message", onMessage);
+    ws.addEventListener("error", onError);
+    options.abortSignal.addEventListener("abort", onAbort, { once: true });
+  });
+
+  schedulePing();
+  await closePromise;
+}
+
+export async function monitorFeishuLongConnection(
+  options: FeishuLongConnectionOptions,
+): Promise<void> {
+  const core = getFeishuRuntime();
+
+  let attempts = 0;
+  while (!options.abortSignal.aborted) {
+    let connectConfig: FeishuWsConnectConfig;
+    try {
+      connectConfig = await fetchConnectConfig(options);
+    } catch (err) {
+      if (options.abortSignal.aborted) return;
+      options.runtime.error?.(
+        `[${options.account.accountId}] Feishu long connection config failed: ${String(err)}`,
+      );
+      await sleepMs(5_000, options.abortSignal);
+      continue;
+    }
+
+    try {
+      const ws = await connectWebSocket({
+        url: connectConfig.connectUrl,
+        abortSignal: options.abortSignal,
+      });
+      attempts = 0;
+      await monitorSingleSession({ ws, connectConfig, options, core });
+    } catch (err) {
+      if (options.abortSignal.aborted) return;
+      options.runtime.error?.(
+        `[${options.account.accountId}] Feishu long connection failed: ${String(err)}`,
+      );
+    }
+
+    if (options.abortSignal.aborted) return;
+    attempts += 1;
+    const maxAttempts = connectConfig.reconnectCount;
+    if (maxAttempts >= 0 && attempts > maxAttempts) {
+      options.runtime.error?.(
+        `[${options.account.accountId}] Feishu long connection exceeded reconnect attempts`,
+      );
+      return;
+    }
+    const jitter =
+      connectConfig.reconnectNonceMs > 0 ? Math.random() * connectConfig.reconnectNonceMs : 0;
+    await sleepMs(connectConfig.reconnectIntervalMs + jitter, options.abortSignal);
+  }
+}