diff --git a/src/agents/sandbox.ts b/src/agents/sandbox.ts
index 8ac65795d..0769ea938 100644
--- a/src/agents/sandbox.ts
+++ b/src/agents/sandbox.ts
@@ -1,3 +1,7 @@
+export {
+  cleanupAnchorBrowserSession,
+  cleanupAllAnchorBrowserSessions,
+} from "./sandbox/anchorbrowser-session.js";
 export {
   resolveSandboxBrowserConfig,
   resolveSandboxConfigForAgent,
@@ -21,6 +25,7 @@ export {
   type SandboxBrowserInfo,
   type SandboxContainerInfo,
 } from "./sandbox/manage.js";
+export { cleanupSandboxBrowserForScope } from "./sandbox/prune.js";
 export {
   formatSandboxToolPolicyBlockedMessage,
   resolveSandboxRuntimeStatus,
@@ -29,8 +34,10 @@ export {
 export { resolveSandboxToolPolicyForAgent } from "./sandbox/tool-policy.js";
 
 export type {
+  AnchorBrowserSettings,
   SandboxBrowserConfig,
   SandboxBrowserContext,
+  SandboxBrowserProvider,
   SandboxConfig,
   SandboxContext,
   SandboxDockerConfig,
diff --git a/src/agents/sandbox/anchorbrowser-session.ts b/src/agents/sandbox/anchorbrowser-session.ts
new file mode 100644
index 000000000..fe59eb6ee
--- /dev/null
+++ b/src/agents/sandbox/anchorbrowser-session.ts
@@ -0,0 +1,238 @@
+/**
+ * Anchorbrowser session management for sandbox browser contexts.
+ *
+ * Manages the lifecycle of Anchorbrowser sessions:
+ * - Creates sessions on-demand when the browser tool is first used
+ * - Tracks active sessions for reuse within the same scope
+ * - Cleans up sessions when the agent session ends
+ */
+
+import type { BrowserBridge } from "../../browser/bridge-server.js";
+import { startBrowserBridgeServer, stopBrowserBridgeServer } from "../../browser/bridge-server.js";
+import type { ResolvedBrowserConfig } from "../../browser/config.js";
+import {
+  DEFAULT_BROWSER_EVALUATE_ENABLED,
+  DEFAULT_CLAWD_BROWSER_COLOR,
+} from "../../browser/constants.js";
+import { createSubsystemLogger } from "../../logging/subsystem.js";
+import {
+  createAnchorBrowserSession,
+  endAnchorBrowserSession,
+  type AnchorBrowserSession,
+} from "./anchorbrowser.js";
+import type { SandboxBrowserConfig, SandboxBrowserContext } from "./types.js";
+
+const log = createSubsystemLogger("sandbox").child("anchorbrowser");
+
+// ---------------------------------------------------------------------------
+// Session tracking
+// ---------------------------------------------------------------------------
+
+type AnchorSessionEntry = {
+  session: AnchorBrowserSession;
+  bridge: BrowserBridge;
+  apiKey: string;
+  apiUrl?: string;
+};
+
+/** Map of scopeKey -> active Anchorbrowser session entry. */
+const ANCHOR_SESSIONS = new Map<string, AnchorSessionEntry>();
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+/**
+ * Resolve the Anchorbrowser API key from config or environment.
+ */
+function resolveAnchorApiKey(browserCfg: SandboxBrowserConfig): string {
+  const apiKey =
+    browserCfg.anchorbrowser?.apiKey?.trim() || process.env.ANCHORBROWSER_API_KEY?.trim();
+
+  if (!apiKey) {
+    throw new Error(
+      "Anchorbrowser API key not configured. " +
+        "Set agents.defaults.sandbox.browser.anchorbrowser.apiKey in config " +
+        "or ANCHORBROWSER_API_KEY environment variable.",
+    );
+  }
+
+  return apiKey;
+}
+
+/**
+ * Build a ResolvedBrowserConfig for a remote CDP endpoint.
+ */
+function buildRemoteBrowserConfig(params: {
+  cdpUrl: string;
+  evaluateEnabled: boolean;
+}): ResolvedBrowserConfig {
+  const parsed = new URL(params.cdpUrl);
+  const cdpHost = parsed.hostname;
+  const cdpProtocol = parsed.protocol === "https:" ? "https" : "http";
+  const isLoopback =
+    cdpHost === "localhost" ||
+    cdpHost === "127.0.0.1" ||
+    cdpHost === "0.0.0.0" ||
+    cdpHost === "::1";
+
+  return {
+    enabled: true,
+    evaluateEnabled: params.evaluateEnabled,
+    controlPort: 0, // Will be assigned by the bridge server
+    cdpProtocol,
+    cdpHost,
+    cdpIsLoopback: isLoopback,
+    remoteCdpTimeoutMs: 5000, // Longer timeout for remote
+    remoteCdpHandshakeTimeoutMs: 10000,
+    color: DEFAULT_CLAWD_BROWSER_COLOR,
+    executablePath: undefined,
+    headless: false, // Anchorbrowser manages this
+    noSandbox: false,
+    attachOnly: true, // Never launch locally
+    defaultProfile: "remote",
+    profiles: {
+      remote: {
+        cdpUrl: params.cdpUrl,
+        color: DEFAULT_CLAWD_BROWSER_COLOR,
+      },
+    },
+  };
+}
+
+// ---------------------------------------------------------------------------
+// Public API
+// ---------------------------------------------------------------------------
+
+/**
+ * Ensure an Anchorbrowser session exists for the given scope.
+ *
+ * If a session already exists for this scope, reuses it.
+ * Otherwise, creates a new session via the Anchorbrowser API.
+ */
+export async function ensureAnchorBrowser(params: {
+  scopeKey: string;
+  cfg: SandboxBrowserConfig;
+  evaluateEnabled?: boolean;
+}): Promise<SandboxBrowserContext | null> {
+  // Check for existing session
+  const existing = ANCHOR_SESSIONS.get(params.scopeKey);
+  if (existing) {
+    log.debug(`Reusing existing Anchorbrowser session for scope ${params.scopeKey}`);
+    return {
+      bridgeUrl: existing.bridge.baseUrl,
+      liveViewUrl: existing.session.liveViewUrl,
+      sessionId: existing.session.id,
+    };
+  }
+
+  // Resolve API key
+  const apiKey = resolveAnchorApiKey(params.cfg);
+  const apiUrl = params.cfg.anchorbrowser?.apiUrl;
+
+  log.info(`Creating new Anchorbrowser session for scope ${params.scopeKey}`);
+
+  // Create new session via API
+  const session = await createAnchorBrowserSession({
+    apiKey,
+    apiUrl,
+    headless: params.cfg.anchorbrowser?.headless ?? params.cfg.headless,
+    viewport: params.cfg.anchorbrowser?.viewport,
+    proxy: params.cfg.anchorbrowser?.proxy,
+    captchaSolver: params.cfg.anchorbrowser?.captchaSolver,
+    adblock: params.cfg.anchorbrowser?.adblock,
+    popupBlocker: params.cfg.anchorbrowser?.popupBlocker,
+    timeout: params.cfg.anchorbrowser?.timeout,
+    recording: params.cfg.anchorbrowser?.recording,
+    extraStealth: params.cfg.anchorbrowser?.extraStealth,
+  });
+
+  log.info(`Anchorbrowser session created: ${session.id}`);
+  if (session.liveViewUrl) {
+    log.info(`Live view URL: ${session.liveViewUrl}`);
+  }
+
+  // Start local bridge server pointing at the remote CDP
+  const evaluateEnabled = params.evaluateEnabled ?? DEFAULT_BROWSER_EVALUATE_ENABLED;
+  const bridge = await startBrowserBridgeServer({
+    resolved: buildRemoteBrowserConfig({
+      cdpUrl: session.cdpUrl,
+      evaluateEnabled,
+    }),
+  });
+
+  // Track the session
+  ANCHOR_SESSIONS.set(params.scopeKey, {
+    session,
+    bridge,
+    apiKey,
+    apiUrl,
+  });
+
+  return {
+    bridgeUrl: bridge.baseUrl,
+    liveViewUrl: session.liveViewUrl,
+    sessionId: session.id,
+  };
+}
+
+/**
+ * Clean up an Anchorbrowser session for the given scope.
+ *
+ * Stops the local bridge server and ends the remote session via API.
+ */
+export async function cleanupAnchorBrowserSession(scopeKey: string): Promise<void> {
+  const entry = ANCHOR_SESSIONS.get(scopeKey);
+  if (!entry) return;
+
+  log.info(`Cleaning up Anchorbrowser session for scope ${scopeKey}`);
+
+  // Stop the local bridge server
+  try {
+    await stopBrowserBridgeServer(entry.bridge.server);
+  } catch (err) {
+    log.warn(`Failed to stop bridge server: ${err instanceof Error ? err.message : String(err)}`);
+  }
+
+  // End the remote session
+  try {
+    await endAnchorBrowserSession({
+      apiKey: entry.apiKey,
+      apiUrl: entry.apiUrl,
+      sessionId: entry.session.id,
+    });
+    log.info(`Anchorbrowser session ${entry.session.id} ended`);
+  } catch (err) {
+    log.warn(
+      `Failed to end Anchorbrowser session: ${err instanceof Error ? err.message : String(err)}`,
+    );
+  }
+
+  ANCHOR_SESSIONS.delete(scopeKey);
+}
+
+/**
+ * Clean up all active Anchorbrowser sessions.
+ *
+ * Called during gateway shutdown.
+ */
+export async function cleanupAllAnchorBrowserSessions(): Promise<void> {
+  const scopeKeys = Array.from(ANCHOR_SESSIONS.keys());
+  for (const scopeKey of scopeKeys) {
+    await cleanupAnchorBrowserSession(scopeKey);
+  }
+}
+
+/**
+ * Check if an Anchorbrowser session exists for the given scope.
+ */
+export function hasAnchorBrowserSession(scopeKey: string): boolean {
+  return ANCHOR_SESSIONS.has(scopeKey);
+}
+
+/**
+ * Get the Anchorbrowser session entry for a scope (if any).
+ */
+export function getAnchorBrowserSessionEntry(scopeKey: string): AnchorSessionEntry | undefined {
+  return ANCHOR_SESSIONS.get(scopeKey);
+}
diff --git a/src/agents/sandbox/anchorbrowser.test.ts b/src/agents/sandbox/anchorbrowser.test.ts
new file mode 100644
index 000000000..f3083b39b
--- /dev/null
+++ b/src/agents/sandbox/anchorbrowser.test.ts
@@ -0,0 +1,264 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+
+import {
+  createAnchorBrowserSession,
+  endAnchorBrowserSession,
+  getAnchorBrowserSession,
+} from "./anchorbrowser.js";
+
+describe("anchorbrowser client", () => {
+  const mockFetch = vi.fn();
+  const originalFetch = global.fetch;
+
+  beforeEach(() => {
+    global.fetch = mockFetch;
+    mockFetch.mockReset();
+  });
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+  });
+
+  describe("createAnchorBrowserSession", () => {
+    it("creates a session with minimal params", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            id: "session-123",
+            cdp_url: "wss://browser.anchorbrowser.io/session-123",
+            live_view_url: "https://app.anchorbrowser.io/live/session-123",
+          },
+        }),
+      });
+
+      const session = await createAnchorBrowserSession({
+        apiKey: "test-api-key",
+      });
+
+      expect(session).toEqual({
+        id: "session-123",
+        cdpUrl: "wss://browser.anchorbrowser.io/session-123",
+        liveViewUrl: "https://app.anchorbrowser.io/live/session-123",
+      });
+
+      expect(mockFetch).toHaveBeenCalledWith(
+        "https://api.anchorbrowser.io/v1/sessions",
+        expect.objectContaining({
+          method: "POST",
+          headers: {
+            "anchor-api-key": "test-api-key",
+            "Content-Type": "application/json",
+          },
+        }),
+      );
+    });
+
+    it("creates a session with all params", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            id: "session-456",
+            cdp_url: "wss://browser.anchorbrowser.io/session-456",
+          },
+        }),
+      });
+
+      const session = await createAnchorBrowserSession({
+        apiKey: "test-api-key",
+        apiUrl: "https://custom.api.io/v1",
+        headless: true,
+        viewport: { width: 1920, height: 1080 },
+        proxy: { active: true, type: "anchor_residential", countryCode: "de" },
+        captchaSolver: true,
+        adblock: false,
+        timeout: { maxDuration: 30, idleTimeout: 10 },
+      });
+
+      expect(session.id).toBe("session-456");
+      expect(mockFetch).toHaveBeenCalledWith(
+        "https://custom.api.io/v1/sessions",
+        expect.objectContaining({
+          method: "POST",
+          body: expect.any(String),
+        }),
+      );
+
+      // Parse the body to verify structure
+      const call = mockFetch.mock.calls[0];
+      const body = JSON.parse(call[1].body as string);
+      expect(body.browser.headless).toEqual({ active: true });
+      expect(body.browser.viewport).toEqual({ width: 1920, height: 1080 });
+      expect(body.browser.captcha_solver).toEqual({ active: true });
+      expect(body.browser.adblock).toEqual({ active: false });
+      expect(body.session.proxy).toEqual({
+        active: true,
+        type: "anchor_residential",
+        country_code: "de",
+      });
+      expect(body.session.timeout).toEqual({
+        max_duration: 30,
+        idle_timeout: 10,
+      });
+    });
+
+    it("throws on API error", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 401,
+        statusText: "Unauthorized",
+        json: async () => ({
+          error: "Invalid API key",
+        }),
+      });
+
+      await expect(createAnchorBrowserSession({ apiKey: "invalid-key" })).rejects.toThrow(
+        "Anchorbrowser API error: Invalid API key",
+      );
+    });
+
+    it("throws on non-JSON error response", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 500,
+        statusText: "Internal Server Error",
+        json: async () => {
+          throw new Error("Not JSON");
+        },
+      });
+
+      await expect(createAnchorBrowserSession({ apiKey: "test-key" })).rejects.toThrow(
+        "Anchorbrowser API error: 500 Internal Server Error",
+      );
+    });
+  });
+
+  describe("endAnchorBrowserSession", () => {
+    it("ends a session successfully", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+      });
+
+      await endAnchorBrowserSession({
+        apiKey: "test-api-key",
+        sessionId: "session-123",
+      });
+
+      expect(mockFetch).toHaveBeenCalledWith(
+        "https://api.anchorbrowser.io/v1/sessions/session-123",
+        expect.objectContaining({
+          method: "DELETE",
+          headers: {
+            "anchor-api-key": "test-api-key",
+            "Content-Type": "application/json",
+          },
+        }),
+      );
+    });
+
+    it("accepts 404 (session already ended)", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 404,
+      });
+
+      // Should not throw
+      await endAnchorBrowserSession({
+        apiKey: "test-api-key",
+        sessionId: "session-123",
+      });
+    });
+
+    it("throws on other errors", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 500,
+        statusText: "Internal Server Error",
+        json: async () => ({ message: "Server error" }),
+      });
+
+      await expect(
+        endAnchorBrowserSession({
+          apiKey: "test-api-key",
+          sessionId: "session-123",
+        }),
+      ).rejects.toThrow("Anchorbrowser API error: Server error");
+    });
+
+    it("uses custom API URL", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+      });
+
+      await endAnchorBrowserSession({
+        apiKey: "test-api-key",
+        apiUrl: "https://custom.api.io/v1",
+        sessionId: "session-123",
+      });
+
+      expect(mockFetch).toHaveBeenCalledWith(
+        "https://custom.api.io/v1/sessions/session-123",
+        expect.anything(),
+      );
+    });
+  });
+
+  describe("getAnchorBrowserSession", () => {
+    it("returns session info", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        json: async () => ({
+          data: {
+            id: "session-123",
+            cdp_url: "wss://browser.anchorbrowser.io/session-123",
+            live_view_url: "https://app.anchorbrowser.io/live/session-123",
+          },
+        }),
+      });
+
+      const session = await getAnchorBrowserSession({
+        apiKey: "test-api-key",
+        sessionId: "session-123",
+      });
+
+      expect(session).toEqual({
+        id: "session-123",
+        cdpUrl: "wss://browser.anchorbrowser.io/session-123",
+        liveViewUrl: "https://app.anchorbrowser.io/live/session-123",
+      });
+    });
+
+    it("returns null for 404", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 404,
+      });
+
+      const session = await getAnchorBrowserSession({
+        apiKey: "test-api-key",
+        sessionId: "nonexistent",
+      });
+
+      expect(session).toBeNull();
+    });
+
+    it("throws on other errors", async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: false,
+        status: 500,
+        statusText: "Internal Server Error",
+        json: async () => ({}),
+      });
+
+      await expect(
+        getAnchorBrowserSession({
+          apiKey: "test-api-key",
+          sessionId: "session-123",
+        }),
+      ).rejects.toThrow("Anchorbrowser API error: 500 Internal Server Error");
+    });
+  });
+});
diff --git a/src/agents/sandbox/anchorbrowser.ts b/src/agents/sandbox/anchorbrowser.ts
new file mode 100644
index 000000000..d492015c4
--- /dev/null
+++ b/src/agents/sandbox/anchorbrowser.ts
@@ -0,0 +1,234 @@
+/**
+ * Anchorbrowser API client for creating and managing remote browser sessions.
+ *
+ * @see https://docs.anchorbrowser.io/api-reference/browser-sessions/start-browser-session
+ */
+
+import type { AnchorBrowserSettings } from "./types.js";
+
+const DEFAULT_API_URL = "https://api.anchorbrowser.io/v1";
+
+// ---------------------------------------------------------------------------
+// Types
+// ---------------------------------------------------------------------------
+
+export type AnchorBrowserSession = {
+  id: string;
+  cdpUrl: string;
+  liveViewUrl?: string;
+};
+
+export type AnchorBrowserCreateParams = AnchorBrowserSettings & {
+  /** API key (required). */
+  apiKey: string;
+};
+
+type AnchorApiSessionResponse = {
+  data: {
+    id: string;
+    cdp_url: string;
+    live_view_url?: string;
+  };
+};
+
+type AnchorApiErrorResponse = {
+  error?: string;
+  message?: string;
+};
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+function resolveApiUrl(settings?: AnchorBrowserSettings): string {
+  return settings?.apiUrl?.trim() || DEFAULT_API_URL;
+}
+
+function buildHeaders(apiKey: string): Record<string, string> {
+  return {
+    "anchor-api-key": apiKey,
+    "Content-Type": "application/json",
+  };
+}
+
+/**
+ * Build the request body for creating an Anchorbrowser session.
+ */
+function buildCreateSessionBody(params: AnchorBrowserCreateParams): Record<string, unknown> {
+  const body: Record<string, unknown> = {};
+
+  // Session config
+  const session: Record<string, unknown> = {};
+  if (params.recording !== undefined) {
+    session.recording = { active: params.recording };
+  }
+  if (params.proxy) {
+    session.proxy = {
+      active: params.proxy.active ?? false,
+      ...(params.proxy.type && { type: params.proxy.type }),
+      ...(params.proxy.countryCode && { country_code: params.proxy.countryCode }),
+      ...(params.proxy.region && { region: params.proxy.region }),
+      ...(params.proxy.city && { city: params.proxy.city }),
+    };
+  }
+  if (params.timeout) {
+    session.timeout = {
+      ...(params.timeout.maxDuration !== undefined && { max_duration: params.timeout.maxDuration }),
+      ...(params.timeout.idleTimeout !== undefined && { idle_timeout: params.timeout.idleTimeout }),
+    };
+  }
+  if (Object.keys(session).length > 0) {
+    body.session = session;
+  }
+
+  // Browser config
+  const browser: Record<string, unknown> = {};
+  if (params.adblock !== undefined) {
+    browser.adblock = { active: params.adblock };
+  }
+  if (params.popupBlocker !== undefined) {
+    browser.popup_blocker = { active: params.popupBlocker };
+  }
+  if (params.captchaSolver !== undefined) {
+    browser.captcha_solver = { active: params.captchaSolver };
+  }
+  if (params.headless !== undefined) {
+    browser.headless = { active: params.headless };
+  }
+  if (params.viewport) {
+    browser.viewport = {
+      width: params.viewport.width,
+      height: params.viewport.height,
+    };
+  }
+  if (params.extraStealth !== undefined) {
+    browser.extra_stealth = { active: params.extraStealth };
+  }
+  if (Object.keys(browser).length > 0) {
+    body.browser = browser;
+  }
+
+  return body;
+}
+
+// ---------------------------------------------------------------------------
+// API Functions
+// ---------------------------------------------------------------------------
+
+/**
+ * Create a new Anchorbrowser session.
+ *
+ * @throws Error if the API call fails or returns an error.
+ */
+export async function createAnchorBrowserSession(
+  params: AnchorBrowserCreateParams,
+): Promise<AnchorBrowserSession> {
+  const apiUrl = resolveApiUrl(params);
+  const url = `${apiUrl}/sessions`;
+
+  const body = buildCreateSessionBody(params);
+
+  const response = await fetch(url, {
+    method: "POST",
+    headers: buildHeaders(params.apiKey),
+    body: JSON.stringify(body),
+  });
+
+  if (!response.ok) {
+    let errorMessage = `Anchorbrowser API error: ${response.status} ${response.statusText}`;
+    try {
+      const errorData = (await response.json()) as AnchorApiErrorResponse;
+      if (errorData.error || errorData.message) {
+        errorMessage = `Anchorbrowser API error: ${errorData.error || errorData.message}`;
+      }
+    } catch {
+      // Ignore JSON parse errors
+    }
+    throw new Error(errorMessage);
+  }
+
+  const data = (await response.json()) as AnchorApiSessionResponse;
+
+  return {
+    id: data.data.id,
+    cdpUrl: data.data.cdp_url,
+    liveViewUrl: data.data.live_view_url,
+  };
+}
+
+/**
+ * End an Anchorbrowser session.
+ *
+ * @throws Error if the API call fails.
+ */
+export async function endAnchorBrowserSession(params: {
+  apiKey: string;
+  apiUrl?: string;
+  sessionId: string;
+}): Promise<void> {
+  const apiUrl = params.apiUrl?.trim() || DEFAULT_API_URL;
+  const url = `${apiUrl}/sessions/${encodeURIComponent(params.sessionId)}`;
+
+  const response = await fetch(url, {
+    method: "DELETE",
+    headers: buildHeaders(params.apiKey),
+  });
+
+  // 404 is acceptable - session may have already ended
+  if (!response.ok && response.status !== 404) {
+    let errorMessage = `Anchorbrowser API error: ${response.status} ${response.statusText}`;
+    try {
+      const errorData = (await response.json()) as AnchorApiErrorResponse;
+      if (errorData.error || errorData.message) {
+        errorMessage = `Anchorbrowser API error: ${errorData.error || errorData.message}`;
+      }
+    } catch {
+      // Ignore JSON parse errors
+    }
+    throw new Error(errorMessage);
+  }
+}
+
+/**
+ * Get the status of an Anchorbrowser session.
+ *
+ * @returns The session info, or null if the session doesn't exist.
+ */
+export async function getAnchorBrowserSession(params: {
+  apiKey: string;
+  apiUrl?: string;
+  sessionId: string;
+}): Promise<AnchorBrowserSession | null> {
+  const apiUrl = params.apiUrl?.trim() || DEFAULT_API_URL;
+  const url = `${apiUrl}/sessions/${encodeURIComponent(params.sessionId)}`;
+
+  const response = await fetch(url, {
+    method: "GET",
+    headers: buildHeaders(params.apiKey),
+  });
+
+  if (response.status === 404) {
+    return null;
+  }
+
+  if (!response.ok) {
+    let errorMessage = `Anchorbrowser API error: ${response.status} ${response.statusText}`;
+    try {
+      const errorData = (await response.json()) as AnchorApiErrorResponse;
+      if (errorData.error || errorData.message) {
+        errorMessage = `Anchorbrowser API error: ${errorData.error || errorData.message}`;
+      }
+    } catch {
+      // Ignore JSON parse errors
+    }
+    throw new Error(errorMessage);
+  }
+
+  const data = (await response.json()) as AnchorApiSessionResponse;
+
+  return {
+    id: data.data.id,
+    cdpUrl: data.data.cdp_url,
+    liveViewUrl: data.data.live_view_url,
+  };
+}
diff --git a/src/agents/sandbox/browser.ts b/src/agents/sandbox/browser.ts
index 4951d9ce5..53f5e1102 100644
--- a/src/agents/sandbox/browser.ts
+++ b/src/agents/sandbox/browser.ts
@@ -4,6 +4,7 @@ import {
   DEFAULT_BROWSER_EVALUATE_ENABLED,
   DEFAULT_CLAWD_BROWSER_COLOR,
 } from "../../browser/constants.js";
+import { ensureAnchorBrowser } from "./anchorbrowser-session.js";
 import { BROWSER_BRIDGES } from "./browser-bridges.js";
 import { DEFAULT_SANDBOX_BROWSER_IMAGE, SANDBOX_AGENT_WORKSPACE_MOUNT } from "./constants.js";
 import {
@@ -86,6 +87,17 @@ export async function ensureSandboxBrowser(params: {
   if (!params.cfg.browser.enabled) return null;
   if (!isToolAllowed(params.cfg.tools, "browser")) return null;
 
+  // Branch based on provider
+  const provider = params.cfg.browser.provider ?? "docker";
+  if (provider === "anchorbrowser") {
+    return ensureAnchorBrowser({
+      scopeKey: params.scopeKey,
+      cfg: params.cfg.browser,
+      evaluateEnabled: params.evaluateEnabled,
+    });
+  }
+
+  // Docker provider (default)
   const slug = params.cfg.scope === "shared" ? "shared" : slugifySessionKey(params.scopeKey);
   const name = `${params.cfg.browser.containerPrefix}${slug}`;
   const containerName = name.slice(0, 63);
diff --git a/src/agents/sandbox/config.ts b/src/agents/sandbox/config.ts
index cabf907bc..09d6da649 100644
--- a/src/agents/sandbox/config.ts
+++ b/src/agents/sandbox/config.ts
@@ -86,8 +86,32 @@ export function resolveSandboxBrowserConfig(params: {
 }): SandboxBrowserConfig {
   const agentBrowser = params.scope === "shared" ? undefined : params.agentBrowser;
   const globalBrowser = params.globalBrowser;
+
+  // Merge Anchorbrowser settings
+  const globalAnchor = globalBrowser?.anchorbrowser;
+  const agentAnchor = agentBrowser?.anchorbrowser;
+  const anchorbrowser =
+    globalAnchor || agentAnchor
+      ? {
+          apiKey: agentAnchor?.apiKey ?? globalAnchor?.apiKey ?? process.env.ANCHORBROWSER_API_KEY,
+          apiUrl: agentAnchor?.apiUrl ?? globalAnchor?.apiUrl,
+          proxy: agentAnchor?.proxy ?? globalAnchor?.proxy,
+          timeout: agentAnchor?.timeout ?? globalAnchor?.timeout,
+          captchaSolver: agentAnchor?.captchaSolver ?? globalAnchor?.captchaSolver,
+          adblock: agentAnchor?.adblock ?? globalAnchor?.adblock,
+          popupBlocker: agentAnchor?.popupBlocker ?? globalAnchor?.popupBlocker,
+          headless: agentAnchor?.headless ?? globalAnchor?.headless,
+          viewport: agentAnchor?.viewport ?? globalAnchor?.viewport,
+          recording: agentAnchor?.recording ?? globalAnchor?.recording,
+          extraStealth: agentAnchor?.extraStealth ?? globalAnchor?.extraStealth,
+        }
+      : undefined;
+
   return {
     enabled: agentBrowser?.enabled ?? globalBrowser?.enabled ?? false,
+    provider: agentBrowser?.provider ?? globalBrowser?.provider ?? "docker",
+
+    // Docker-specific settings
     image: agentBrowser?.image ?? globalBrowser?.image ?? DEFAULT_SANDBOX_BROWSER_IMAGE,
     containerPrefix:
       agentBrowser?.containerPrefix ??
@@ -97,8 +121,13 @@ export function resolveSandboxBrowserConfig(params: {
     vncPort: agentBrowser?.vncPort ?? globalBrowser?.vncPort ?? DEFAULT_SANDBOX_BROWSER_VNC_PORT,
     noVncPort:
       agentBrowser?.noVncPort ?? globalBrowser?.noVncPort ?? DEFAULT_SANDBOX_BROWSER_NOVNC_PORT,
-    headless: agentBrowser?.headless ?? globalBrowser?.headless ?? false,
     enableNoVnc: agentBrowser?.enableNoVnc ?? globalBrowser?.enableNoVnc ?? true,
+
+    // Anchorbrowser-specific settings
+    anchorbrowser,
+
+    // Common settings
+    headless: agentBrowser?.headless ?? globalBrowser?.headless ?? false,
     allowHostControl: agentBrowser?.allowHostControl ?? globalBrowser?.allowHostControl ?? false,
     autoStart: agentBrowser?.autoStart ?? globalBrowser?.autoStart ?? true,
     autoStartTimeoutMs:
diff --git a/src/agents/sandbox/prune.ts b/src/agents/sandbox/prune.ts
index 5c23e58e6..b292d64ac 100644
--- a/src/agents/sandbox/prune.ts
+++ b/src/agents/sandbox/prune.ts
@@ -1,5 +1,6 @@
 import { stopBrowserBridgeServer } from "../../browser/bridge-server.js";
 import { defaultRuntime } from "../../runtime.js";
+import { cleanupAnchorBrowserSession } from "./anchorbrowser-session.js";
 import { BROWSER_BRIDGES } from "./browser-bridges.js";
 import { dockerContainerState, execDocker } from "./docker.js";
 import {
@@ -93,3 +94,21 @@ export async function ensureDockerContainerIsRunning(containerName: string) {
     await execDocker(["start", containerName]);
   }
 }
+
+/**
+ * Clean up sandbox browser resources for a specific session scope.
+ *
+ * For Docker-based browsers: stops the bridge server.
+ * For Anchorbrowser sessions: ends the remote session via API.
+ */
+export async function cleanupSandboxBrowserForScope(scopeKey: string): Promise<void> {
+  // Clean up Docker-based browser bridge
+  const bridge = BROWSER_BRIDGES.get(scopeKey);
+  if (bridge) {
+    await stopBrowserBridgeServer(bridge.bridge.server).catch(() => undefined);
+    BROWSER_BRIDGES.delete(scopeKey);
+  }
+
+  // Clean up Anchorbrowser session
+  await cleanupAnchorBrowserSession(scopeKey);
+}
diff --git a/src/agents/sandbox/types.ts b/src/agents/sandbox/types.ts
index f27dfd715..08f47cdd7 100644
--- a/src/agents/sandbox/types.ts
+++ b/src/agents/sandbox/types.ts
@@ -1,6 +1,8 @@
 import type { SandboxDockerConfig } from "./types.docker.js";
+import type { AnchorBrowserSettings, SandboxBrowserProvider } from "../../config/types.sandbox.js";
 
 export type { SandboxDockerConfig } from "./types.docker.js";
+export type { AnchorBrowserSettings, SandboxBrowserProvider } from "../../config/types.sandbox.js";
 
 export type SandboxToolPolicy = {
   allow?: string[];
@@ -29,13 +31,22 @@ export type SandboxWorkspaceAccess = "none" | "ro" | "rw";
 
 export type SandboxBrowserConfig = {
   enabled: boolean;
+  /** Browser provider: "docker" (default) or "anchorbrowser". */
+  provider: SandboxBrowserProvider;
+
+  // Docker-specific settings
   image: string;
   containerPrefix: string;
   cdpPort: number;
   vncPort: number;
   noVncPort: number;
-  headless: boolean;
   enableNoVnc: boolean;
+
+  // Anchorbrowser-specific settings
+  anchorbrowser?: AnchorBrowserSettings;
+
+  // Common settings
+  headless: boolean;
   allowHostControl: boolean;
   autoStart: boolean;
   autoStartTimeoutMs: number;
@@ -61,8 +72,14 @@ export type SandboxConfig = {
 
 export type SandboxBrowserContext = {
   bridgeUrl: string;
+  /** NoVNC URL for Docker-based browsers. */
   noVncUrl?: string;
-  containerName: string;
+  /** Live view URL for Anchorbrowser sessions. */
+  liveViewUrl?: string;
+  /** Docker container name (Docker provider only). */
+  containerName?: string;
+  /** Anchorbrowser session ID (Anchorbrowser provider only). */
+  sessionId?: string;
 };
 
 export type SandboxContext = {
diff --git a/src/config/types.sandbox.ts b/src/config/types.sandbox.ts
index 4f5f83810..11ed044b1 100644
--- a/src/config/types.sandbox.ts
+++ b/src/config/types.sandbox.ts
@@ -44,15 +44,75 @@ export type SandboxDockerSettings = {
   binds?: string[];
 };
 
+/** Browser provider for sandbox sessions. */
+export type SandboxBrowserProvider = "docker" | "anchorbrowser";
+
+/** Anchorbrowser proxy configuration. */
+export type AnchorBrowserProxySettings = {
+  /** Enable proxy. */
+  active?: boolean;
+  /** Proxy type (anchor_proxy, anchor_residential, anchor_mobile, anchor_gov). */
+  type?: "anchor_proxy" | "anchor_residential" | "anchor_mobile" | "anchor_gov";
+  /** Country code (ISO 2 lowercase, e.g. "us"). */
+  countryCode?: string;
+  /** Region code for geographic targeting. */
+  region?: string;
+  /** City name for precise targeting (requires region). */
+  city?: string;
+};
+
+/** Anchorbrowser timeout configuration. */
+export type AnchorBrowserTimeoutSettings = {
+  /** Max session duration in minutes (default: 20). */
+  maxDuration?: number;
+  /** Idle timeout in minutes before session stops (default: 5). */
+  idleTimeout?: number;
+};
+
+/** Anchorbrowser-specific settings. */
+export type AnchorBrowserSettings = {
+  /** API key (prefer env var ANCHORBROWSER_API_KEY). */
+  apiKey?: string;
+  /** Override API URL (default: https://api.anchorbrowser.io/v1). */
+  apiUrl?: string;
+  /** Proxy configuration. */
+  proxy?: AnchorBrowserProxySettings;
+  /** Timeout configuration. */
+  timeout?: AnchorBrowserTimeoutSettings;
+  /** Enable captcha solving (requires proxy). */
+  captchaSolver?: boolean;
+  /** Enable ad blocking (default: true). */
+  adblock?: boolean;
+  /** Enable popup blocking (default: true). */
+  popupBlocker?: boolean;
+  /** Run browser headless (default: false). */
+  headless?: boolean;
+  /** Viewport dimensions. */
+  viewport?: { width: number; height: number };
+  /** Enable session recording (default: true). */
+  recording?: boolean;
+  /** Enable extra stealth mode (requires proxy). */
+  extraStealth?: boolean;
+};
+
 export type SandboxBrowserSettings = {
   enabled?: boolean;
+  /** Browser provider: "docker" (default) or "anchorbrowser". */
+  provider?: SandboxBrowserProvider;
+
+  // Docker-specific settings
   image?: string;
   containerPrefix?: string;
   cdpPort?: number;
   vncPort?: number;
   noVncPort?: number;
-  headless?: boolean;
   enableNoVnc?: boolean;
+
+  // Anchorbrowser-specific settings
+  anchorbrowser?: AnchorBrowserSettings;
+
+  // Common settings
+  headless?: boolean;
   /**
    * Allow sandboxed sessions to target the host browser control server.
    * Default: false.