diff --git a/.github/labeler.yml b/.github/labeler.yml
index 5c19fa418..d459efc49 100644
--- a/.github/labeler.yml
+++ b/.github/labeler.yml
@@ -180,10 +180,12 @@
           - "docs/cli/security.md"
           - "docs/gateway/security.md"
 
-"extensions: copilot-proxy":
+"provider: github-copilot":
   - changed-files:
       - any-glob-to-any-file:
-          - "extensions/copilot-proxy/**"
+          - "src/providers/github-copilot-*.ts"
+          - "docs/providers/github-copilot.md"
+
 "extensions: diagnostics-otel":
   - changed-files:
       - any-glob-to-any-file:
diff --git a/.secrets.baseline b/.secrets.baseline
index 826d5b4de..176fedbfa 100644
--- a/.secrets.baseline
+++ b/.secrets.baseline
@@ -854,15 +854,6 @@
         "line_number": 214
       }
     ],
-    "extensions/copilot-proxy/index.ts": [
-      {
-        "type": "Secret Keyword",
-        "filename": "extensions/copilot-proxy/index.ts",
-        "hashed_secret": "50f013532a9770a2c2cfdc38b7581dd01df69b70",
-        "is_verified": false,
-        "line_number": 4
-      }
-    ],
     "extensions/google-antigravity-auth/index.ts": [
       {
         "type": "Base64 High Entropy String",
diff --git a/docs/plugin.md b/docs/plugin.md
index 383eedc49..207688666 100644
--- a/docs/plugin.md
+++ b/docs/plugin.md
@@ -47,7 +47,7 @@ See [Voice Call](/plugins/voice-call) for a concrete example plugin.
 - Google Antigravity OAuth (provider auth) — bundled as `google-antigravity-auth` (disabled by default)
 - Gemini CLI OAuth (provider auth) — bundled as `google-gemini-cli-auth` (disabled by default)
 - Qwen OAuth (provider auth) — bundled as `qwen-portal-auth` (disabled by default)
-- Copilot Proxy (provider auth) — local VS Code Copilot Proxy bridge; distinct from built-in `github-copilot` device login (bundled, disabled by default)
+ 
 
 OpenClaw plugins are **TypeScript modules** loaded at runtime via jiti. **Config
 validation does not execute plugin code**; it uses the plugin manifest and JSON
diff --git a/docs/providers/github-copilot.md b/docs/providers/github-copilot.md
index d57603b5a..4adbe1de2 100644
--- a/docs/providers/github-copilot.md
+++ b/docs/providers/github-copilot.md
@@ -4,41 +4,30 @@ read_when:
   - You want to use GitHub Copilot as a model provider
   - You need the `openclaw models auth login-github-copilot` flow
 ---
-# Github Copilot
+# GitHub Copilot
 
 ## What is GitHub Copilot?
 
 GitHub Copilot is GitHub's AI coding assistant. It provides access to Copilot
 models for your GitHub account and plan. OpenClaw can use Copilot as a model
-provider in two different ways.
-
-## Two ways to use Copilot in OpenClaw
-
-### 1) Built-in GitHub Copilot provider (`github-copilot`)
-
-Use the native device-login flow to obtain a GitHub token, then exchange it for
-Copilot API tokens when OpenClaw runs. This is the **default** and simplest path
-because it does not require VS Code.
-
-### 2) Copilot Proxy plugin (`copilot-proxy`)
-
-Use the **Copilot Proxy** VS Code extension as a local bridge. OpenClaw talks to
-the proxy’s `/v1` endpoint and uses the model list you configure there. Choose
-this when you already run Copilot Proxy in VS Code or need to route through it.
-You must enable the plugin and keep the VS Code extension running.
+provider via the official GitHub Copilot SDK. OpenClaw uses the GitHub device
+flow to obtain a GitHub token and exchanges it for Copilot API tokens at runtime.
+This is the recommended and supported path for integrating Copilot with
+OpenClaw.
 
 Use GitHub Copilot as a model provider (`github-copilot`). The login command runs
-the GitHub device flow, saves an auth profile, and updates your config to use that
-profile.
+the GitHub device flow, saves an auth profile, and updates your config to use
+that profile.
 
 ## CLI setup
 
+Run the OpenClaw login flow to create an auth profile:
+
 ```bash
 openclaw models auth login-github-copilot
 ```
 
-You'll be prompted to visit a URL and enter a one-time code. Keep the terminal
-open until it completes.
+This creates an auth profile and (optionally) updates your config to use it.
 
 ### Optional flags
 
diff --git a/extensions/copilot-proxy/README.md b/extensions/copilot-proxy/README.md
deleted file mode 100644
index 07ffde465..000000000
--- a/extensions/copilot-proxy/README.md
+++ /dev/null
@@ -1,24 +0,0 @@
-# Copilot Proxy (OpenClaw plugin)
-
-Provider plugin for the **Copilot Proxy** VS Code extension.
-
-## Enable
-
-Bundled plugins are disabled by default. Enable this one:
-
-```bash
-openclaw plugins enable copilot-proxy
-```
-
-Restart the Gateway after enabling.
-
-## Authenticate
-
-```bash
-openclaw models auth login --provider copilot-proxy --set-default
-```
-
-## Notes
-
-- Copilot Proxy must be running in VS Code.
-- Base URL must include `/v1`.
diff --git a/extensions/copilot-proxy/index.ts b/extensions/copilot-proxy/index.ts
deleted file mode 100644
index 0529b7bc5..000000000
--- a/extensions/copilot-proxy/index.ts
+++ /dev/null
@@ -1,142 +0,0 @@
-import { emptyPluginConfigSchema } from "openclaw/plugin-sdk";
-
-const DEFAULT_BASE_URL = "http://localhost:3000/v1";
-const DEFAULT_API_KEY = "n/a";
-const DEFAULT_CONTEXT_WINDOW = 128_000;
-const DEFAULT_MAX_TOKENS = 8192;
-const DEFAULT_MODEL_IDS = [
-  "gpt-5.2",
-  "gpt-5.2-codex",
-  "gpt-5.1",
-  "gpt-5.1-codex",
-  "gpt-5.1-codex-max",
-  "gpt-5-mini",
-  "claude-opus-4.5",
-  "claude-sonnet-4.5",
-  "claude-haiku-4.5",
-  "gemini-3-pro",
-  "gemini-3-flash",
-  "grok-code-fast-1",
-] as const;
-
-function normalizeBaseUrl(value: string): string {
-  const trimmed = value.trim();
-  if (!trimmed) return DEFAULT_BASE_URL;
-  let normalized = trimmed;
-  while (normalized.endsWith("/")) normalized = normalized.slice(0, -1);
-  if (!normalized.endsWith("/v1")) normalized = `${normalized}/v1`;
-  return normalized;
-}
-
-function validateBaseUrl(value: string): string | undefined {
-  const normalized = normalizeBaseUrl(value);
-  try {
-    new URL(normalized);
-  } catch {
-    return "Enter a valid URL";
-  }
-  return undefined;
-}
-
-function parseModelIds(input: string): string[] {
-  const parsed = input
-    .split(/[\n,]/)
-    .map((model) => model.trim())
-    .filter(Boolean);
-  return Array.from(new Set(parsed));
-}
-
-function buildModelDefinition(modelId: string) {
-  return {
-    id: modelId,
-    name: modelId,
-    api: "openai-completions",
-    reasoning: false,
-    input: ["text", "image"],
-    cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
-    contextWindow: DEFAULT_CONTEXT_WINDOW,
-    maxTokens: DEFAULT_MAX_TOKENS,
-  };
-}
-
-const copilotProxyPlugin = {
-  id: "copilot-proxy",
-  name: "Copilot Proxy",
-  description: "Local Copilot Proxy (VS Code LM) provider plugin",
-  configSchema: emptyPluginConfigSchema(),
-  register(api) {
-    api.registerProvider({
-      id: "copilot-proxy",
-      label: "Copilot Proxy",
-      docsPath: "/providers/models",
-      auth: [
-        {
-          id: "local",
-          label: "Local proxy",
-          hint: "Configure base URL + models for the Copilot Proxy server",
-          kind: "custom",
-          run: async (ctx) => {
-            const baseUrlInput = await ctx.prompter.text({
-              message: "Copilot Proxy base URL",
-              initialValue: DEFAULT_BASE_URL,
-              validate: validateBaseUrl,
-            });
-
-            const modelInput = await ctx.prompter.text({
-              message: "Model IDs (comma-separated)",
-              initialValue: DEFAULT_MODEL_IDS.join(", "),
-              validate: (value) =>
-                parseModelIds(value).length > 0 ? undefined : "Enter at least one model id",
-            });
-
-            const baseUrl = normalizeBaseUrl(baseUrlInput);
-            const modelIds = parseModelIds(modelInput);
-            const defaultModelId = modelIds[0] ?? DEFAULT_MODEL_IDS[0];
-            const defaultModelRef = `copilot-proxy/${defaultModelId}`;
-
-            return {
-              profiles: [
-                {
-                  profileId: "copilot-proxy:local",
-                  credential: {
-                    type: "token",
-                    provider: "copilot-proxy",
-                    token: DEFAULT_API_KEY,
-                  },
-                },
-              ],
-              configPatch: {
-                models: {
-                  providers: {
-                    "copilot-proxy": {
-                      baseUrl,
-                      apiKey: DEFAULT_API_KEY,
-                      api: "openai-completions",
-                      authHeader: false,
-                      models: modelIds.map((modelId) => buildModelDefinition(modelId)),
-                    },
-                  },
-                },
-                agents: {
-                  defaults: {
-                    models: Object.fromEntries(
-                      modelIds.map((modelId) => [`copilot-proxy/${modelId}`, {}]),
-                    ),
-                  },
-                },
-              },
-              defaultModel: defaultModelRef,
-              notes: [
-                "Start the Copilot Proxy VS Code extension before using these models.",
-                "Copilot Proxy serves /v1/chat/completions; base URL must include /v1.",
-                "Model availability depends on your Copilot plan; edit models.providers.copilot-proxy if needed.",
-              ],
-            };
-          },
-        },
-      ],
-    });
-  },
-};
-
-export default copilotProxyPlugin;
diff --git a/extensions/copilot-proxy/openclaw.plugin.json b/extensions/copilot-proxy/openclaw.plugin.json
deleted file mode 100644
index c27a03f7d..000000000
--- a/extensions/copilot-proxy/openclaw.plugin.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "id": "copilot-proxy",
-  "providers": [
-    "copilot-proxy"
-  ],
-  "configSchema": {
-    "type": "object",
-    "additionalProperties": false,
-    "properties": {}
-  }
-}
diff --git a/extensions/copilot-proxy/package.json b/extensions/copilot-proxy/package.json
deleted file mode 100644
index 60ca9dbbd..000000000
--- a/extensions/copilot-proxy/package.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "name": "@openclaw/copilot-proxy",
-  "version": "2026.1.29",
-  "type": "module",
-  "description": "OpenClaw Copilot Proxy provider plugin",
-  "openclaw": {
-    "extensions": [
-      "./index.ts"
-    ]
-  }
-}
diff --git a/package.json b/package.json
index 77211d865..ce02f5d94 100644
--- a/package.json
+++ b/package.json
@@ -158,6 +158,7 @@
     "@aws-sdk/client-bedrock": "^3.975.0",
     "@buape/carbon": "0.14.0",
     "@clack/prompts": "^0.11.0",
+    "@github/copilot-sdk": "^0.1.19",
     "@grammyjs/runner": "^2.0.3",
     "@grammyjs/transformer-throttler": "^1.2.1",
     "@homebridge/ciao": "^1.3.4",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 95b940c97..cc11849f2 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -25,6 +25,9 @@ importers:
       '@clack/prompts':
         specifier: ^0.11.0
         version: 0.11.0
+      '@github/copilot-sdk':
+        specifier: ^0.1.19
+        version: 0.1.19
       '@grammyjs/runner':
         specifier: ^2.0.3
         version: 2.0.3(grammy@1.39.3)
@@ -264,8 +267,6 @@ importers:
 
   extensions/bluebubbles: {}
 
-  extensions/copilot-proxy: {}
-
   extensions/diagnostics-otel:
     dependencies:
       '@opentelemetry/api':
@@ -1046,6 +1047,50 @@ packages:
   '@eshaz/web-worker@1.2.2':
     resolution: {integrity: sha512-WxXiHFmD9u/owrzempiDlBB1ZYqiLnm9s6aPc8AlFQalq2tKmqdmMr9GXOupDgzXtqnBipj8Un0gkIm7Sjf8mw==}
 
+  '@github/copilot-darwin-arm64@0.0.394':
+    resolution: {integrity: sha512-qDmDFiFaYFW45UhxylN2JyQRLVGLCpkr5UmgbfH5e0aksf+69qytK/MwpD2Cq12KdTjyGMEorlADkSu5eftELA==}
+    cpu: [arm64]
+    os: [darwin]
+    hasBin: true
+
+  '@github/copilot-darwin-x64@0.0.394':
+    resolution: {integrity: sha512-iN4YwSVFxhASiBjLk46f+AzRTNHCvYcmyTKBASxieMIhnDxznYmpo+haFKPCv2lCsEWU8s5LARCnXxxx8J1wKA==}
+    cpu: [x64]
+    os: [darwin]
+    hasBin: true
+
+  '@github/copilot-linux-arm64@0.0.394':
+    resolution: {integrity: sha512-9NeGvmO2tGztuneXZfYAyW3fDk6Pdl6Ffg8MAUaevA/p0awvA+ti/Vh0ZSTcI81nDTjkzONvrcIcjYAN7x0oSg==}
+    cpu: [arm64]
+    os: [linux]
+    hasBin: true
+
+  '@github/copilot-linux-x64@0.0.394':
+    resolution: {integrity: sha512-toahsYQORrP/TPSBQ7sxj4/fJg3YUrD0ksCj/Z4y2vT6EwrE9iC2BspKgQRa4CBoCqxYDNB2blc+mQ1UuzPOxg==}
+    cpu: [x64]
+    os: [linux]
+    hasBin: true
+
+  '@github/copilot-sdk@0.1.19':
+    resolution: {integrity: sha512-h/KvYb6g99v9SurNJGxeXUatmP7GO8KHTAb68GYfmgUqH1EUeN5g0xMUc5lvKxAi7hwj2OxRR73dd37zMMiiiQ==}
+    engines: {node: '>=18.0.0'}
+
+  '@github/copilot-win32-arm64@0.0.394':
+    resolution: {integrity: sha512-R7XBP3l+oeDuBrP0KD80ZBEMsZoxAW8QO2MNsDUV8eVrNJnp6KtGHoA+iCsKYKNOD6wHA/q5qm/jR+gpsz46Aw==}
+    cpu: [arm64]
+    os: [win32]
+    hasBin: true
+
+  '@github/copilot-win32-x64@0.0.394':
+    resolution: {integrity: sha512-/XYV8srP+pMXbf9Gc3wr58zCzBZvsdA3X4poSvr2uU8yCZ6E4pD0agFaZ1c/CikANJi8nb0Id3kulhEhePz/3A==}
+    cpu: [x64]
+    os: [win32]
+    hasBin: true
+
+  '@github/copilot@0.0.394':
+    resolution: {integrity: sha512-koSiaHvVwjgppgh+puxf6dgsR8ql/WST1scS5bjzMsJFfWk7f4xtEXla7TCQfSGoZkCmCsr2Tis27v5TpssiCg==}
+    hasBin: true
+
   '@glideapps/ts-necessities@2.2.3':
     resolution: {integrity: sha512-gXi0awOZLHk3TbW55GZLCPP6O+y/b5X1pBXKBVckFONSwF1z1E5ND2BGJsghQFah+pW7pkkyFb2VhUQI2qhL5w==}
 
@@ -5458,6 +5503,10 @@ packages:
       jsdom:
         optional: true
 
+  vscode-jsonrpc@8.2.1:
+    resolution: {integrity: sha512-kdjOSJ2lLIn7r1rtrMbbNCHjyMPfRnowdKjBQ+mGq6NAW5QY2bEZC/khaC5OR8svbbjvLEaIXkOq45e2X9BIbQ==}
+    engines: {node: '>=14.0.0'}
+
   web-streams-polyfill@3.3.3:
     resolution: {integrity: sha512-d2JWLCivmZYTSIoge9MsgFCZrt571BikcWGYkjC1khllbTeDlGqZ2D8vD8E/lJa8WGWbb7Plm8/XJYV7IJHZZw==}
     engines: {node: '>= 8'}
@@ -6647,6 +6696,39 @@ snapshots:
   '@eshaz/web-worker@1.2.2':
     optional: true
 
+  '@github/copilot-darwin-arm64@0.0.394':
+    optional: true
+
+  '@github/copilot-darwin-x64@0.0.394':
+    optional: true
+
+  '@github/copilot-linux-arm64@0.0.394':
+    optional: true
+
+  '@github/copilot-linux-x64@0.0.394':
+    optional: true
+
+  '@github/copilot-sdk@0.1.19':
+    dependencies:
+      '@github/copilot': 0.0.394
+      vscode-jsonrpc: 8.2.1
+      zod: 4.3.6
+
+  '@github/copilot-win32-arm64@0.0.394':
+    optional: true
+
+  '@github/copilot-win32-x64@0.0.394':
+    optional: true
+
+  '@github/copilot@0.0.394':
+    optionalDependencies:
+      '@github/copilot-darwin-arm64': 0.0.394
+      '@github/copilot-darwin-x64': 0.0.394
+      '@github/copilot-linux-arm64': 0.0.394
+      '@github/copilot-linux-x64': 0.0.394
+      '@github/copilot-win32-arm64': 0.0.394
+      '@github/copilot-win32-x64': 0.0.394
+
   '@glideapps/ts-necessities@2.2.3': {}
 
   '@google/genai@1.34.0':
@@ -11612,6 +11694,8 @@ snapshots:
       - tsx
       - yaml
 
+  vscode-jsonrpc@8.2.1: {}
+
   web-streams-polyfill@3.3.3: {}
 
   webidl-conversions@3.0.1: {}
diff --git a/src/agents/models-config.auto-injects-github-copilot-provider-token-is.test.ts b/src/agents/models-config.auto-injects-github-copilot-provider-token-is.test.ts
index 360ad7934..2b83d49dc 100644
--- a/src/agents/models-config.auto-injects-github-copilot-provider-token-is.test.ts
+++ b/src/agents/models-config.auto-injects-github-copilot-provider-token-is.test.ts
@@ -51,7 +51,7 @@ describe("models-config", () => {
       try {
         vi.resetModules();
 
-        vi.doMock("../providers/github-copilot-token.js", () => ({
+        vi.doMock("../providers/github-copilot-sdk.js", () => ({
           DEFAULT_COPILOT_API_BASE_URL: "https://api.individual.githubcopilot.com",
           resolveCopilotApiToken: vi.fn().mockResolvedValue({
             token: "copilot",
@@ -97,7 +97,7 @@ describe("models-config", () => {
           baseUrl: "https://api.copilot.example",
         });
 
-        vi.doMock("../providers/github-copilot-token.js", () => ({
+        vi.doMock("../providers/github-copilot-sdk.js", () => ({
           DEFAULT_COPILOT_API_BASE_URL: "https://api.individual.githubcopilot.com",
           resolveCopilotApiToken,
         }));
diff --git a/src/agents/models-config.falls-back-default-baseurl-token-exchange-fails.test.ts b/src/agents/models-config.falls-back-default-baseurl-token-exchange-fails.test.ts
index fe1257bf2..2c65aa232 100644
--- a/src/agents/models-config.falls-back-default-baseurl-token-exchange-fails.test.ts
+++ b/src/agents/models-config.falls-back-default-baseurl-token-exchange-fails.test.ts
@@ -51,7 +51,7 @@ describe("models-config", () => {
       try {
         vi.resetModules();
 
-        vi.doMock("../providers/github-copilot-token.js", () => ({
+        vi.doMock("../providers/github-copilot-sdk.js", () => ({
           DEFAULT_COPILOT_API_BASE_URL: "https://api.default.test",
           resolveCopilotApiToken: vi.fn().mockRejectedValue(new Error("boom")),
         }));
@@ -105,7 +105,7 @@ describe("models-config", () => {
           ),
         );
 
-        vi.doMock("../providers/github-copilot-token.js", () => ({
+        vi.doMock("../providers/github-copilot-sdk.js", () => ({
           DEFAULT_COPILOT_API_BASE_URL: "https://api.individual.githubcopilot.com",
           resolveCopilotApiToken: vi.fn().mockResolvedValue({
             token: "copilot",
diff --git a/src/agents/models-config.providers.ts b/src/agents/models-config.providers.ts
index 0cd034c82..27c92c5f1 100644
--- a/src/agents/models-config.providers.ts
+++ b/src/agents/models-config.providers.ts
@@ -3,7 +3,7 @@ import type { ModelDefinitionConfig } from "../config/types.models.js";
 import {
   DEFAULT_COPILOT_API_BASE_URL,
   resolveCopilotApiToken,
-} from "../providers/github-copilot-token.js";
+} from "../providers/github-copilot-sdk.js";
 import { ensureAuthProfileStore, listProfilesForProvider } from "./auth-profiles.js";
 import { resolveAwsSdkEnvVarName, resolveEnvApiKey } from "./model-auth.js";
 import { discoverBedrockModels } from "./bedrock-discovery.js";
diff --git a/src/agents/models-config.uses-first-github-copilot-profile-env-tokens.test.ts b/src/agents/models-config.uses-first-github-copilot-profile-env-tokens.test.ts
index b5ca651d3..63636b16d 100644
--- a/src/agents/models-config.uses-first-github-copilot-profile-env-tokens.test.ts
+++ b/src/agents/models-config.uses-first-github-copilot-profile-env-tokens.test.ts
@@ -87,7 +87,7 @@ describe("models-config", () => {
           baseUrl: "https://api.copilot.example",
         });
 
-        vi.doMock("../providers/github-copilot-token.js", () => ({
+        vi.doMock("../providers/github-copilot-sdk.js", () => ({
           DEFAULT_COPILOT_API_BASE_URL: "https://api.individual.githubcopilot.com",
           resolveCopilotApiToken,
         }));
@@ -117,7 +117,7 @@ describe("models-config", () => {
       try {
         vi.resetModules();
 
-        vi.doMock("../providers/github-copilot-token.js", () => ({
+        vi.doMock("../providers/github-copilot-sdk.js", () => ({
           DEFAULT_COPILOT_API_BASE_URL: "https://api.individual.githubcopilot.com",
           resolveCopilotApiToken: vi.fn().mockResolvedValue({
             token: "copilot",
diff --git a/src/agents/pi-embedded-runner/compact.ts b/src/agents/pi-embedded-runner/compact.ts
index 2dc4c5325..50929e48e 100644
--- a/src/agents/pi-embedded-runner/compact.ts
+++ b/src/agents/pi-embedded-runner/compact.ts
@@ -144,7 +144,7 @@ export async function compactEmbeddedPiSessionDirect(
         );
       }
     } else if (model.provider === "github-copilot") {
-      const { resolveCopilotApiToken } = await import("../../providers/github-copilot-token.js");
+      const { resolveCopilotApiToken } = await import("../../providers/github-copilot-sdk.js");
       const copilotToken = await resolveCopilotApiToken({
         githubToken: apiKeyInfo.apiKey,
       });
diff --git a/src/agents/pi-embedded-runner/run.ts b/src/agents/pi-embedded-runner/run.ts
index 1d5010679..f166855f1 100644
--- a/src/agents/pi-embedded-runner/run.ts
+++ b/src/agents/pi-embedded-runner/run.ts
@@ -229,8 +229,7 @@ export async function runEmbeddedPiAgent(
           return;
         }
         if (model.provider === "github-copilot") {
-          const { resolveCopilotApiToken } =
-            await import("../../providers/github-copilot-token.js");
+          const { resolveCopilotApiToken } = await import("../../providers/github-copilot-sdk.js");
           const copilotToken = await resolveCopilotApiToken({
             githubToken: apiKeyInfo.apiKey,
           });
diff --git a/src/cli/models-cli.ts b/src/cli/models-cli.ts
index e58c23078..5f28d258c 100644
--- a/src/cli/models-cli.ts
+++ b/src/cli/models-cli.ts
@@ -348,7 +348,7 @@ export function registerModelsCli(program: Command) {
 
   auth
     .command("login-github-copilot")
-    .description("Login to GitHub Copilot via GitHub device flow (TTY required)")
+    .description("Verify GitHub Copilot CLI authentication status")
     .option("--profile-id <id>", "Auth profile id (default: github-copilot:github)")
     .option("--yes", "Overwrite existing profile without prompting", false)
     .action(async (opts) => {
diff --git a/src/commands/auth-choice-options.ts b/src/commands/auth-choice-options.ts
index 5acddf4e3..5824568c7 100644
--- a/src/commands/auth-choice-options.ts
+++ b/src/commands/auth-choice-options.ts
@@ -80,9 +80,9 @@ const AUTH_CHOICE_GROUP_DEFS: {
   },
   {
     value: "copilot",
-    label: "Copilot",
-    hint: "GitHub + local proxy",
-    choices: ["github-copilot", "copilot-proxy"],
+    label: "GitHub Copilot",
+    hint: "Official SDK (via Copilot CLI)",
+    choices: ["github-copilot"],
   },
   {
     value: "openrouter",
@@ -156,8 +156,8 @@ export function buildAuthChoiceOptions(params: {
   });
   options.push({
     value: "github-copilot",
-    label: "GitHub Copilot (GitHub device login)",
-    hint: "Uses GitHub device flow",
+    label: "GitHub Copilot (SDK)",
+    hint: "Uses official GitHub Copilot SDK",
   });
   options.push({ value: "gemini-api-key", label: "Google Gemini API key" });
   options.push({
@@ -176,11 +176,6 @@ export function buildAuthChoiceOptions(params: {
     label: "Xiaomi API key",
   });
   options.push({ value: "qwen-portal", label: "Qwen OAuth" });
-  options.push({
-    value: "copilot-proxy",
-    label: "Copilot Proxy (local)",
-    hint: "Local proxy for VS Code Copilot models",
-  });
   options.push({ value: "apiKey", label: "Anthropic API key" });
   // Token flow is currently Anthropic-only; use CLI for advanced providers.
   options.push({
diff --git a/src/commands/auth-choice.apply.copilot-proxy.ts b/src/commands/auth-choice.apply.copilot-proxy.ts
deleted file mode 100644
index 390684697..000000000
--- a/src/commands/auth-choice.apply.copilot-proxy.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-import type { ApplyAuthChoiceParams, ApplyAuthChoiceResult } from "./auth-choice.apply.js";
-import { applyAuthChoicePluginProvider } from "./auth-choice.apply.plugin-provider.js";
-
-export async function applyAuthChoiceCopilotProxy(
-  params: ApplyAuthChoiceParams,
-): Promise<ApplyAuthChoiceResult | null> {
-  return await applyAuthChoicePluginProvider(params, {
-    authChoice: "copilot-proxy",
-    pluginId: "copilot-proxy",
-    providerId: "copilot-proxy",
-    methodId: "local",
-    label: "Copilot Proxy",
-  });
-}
diff --git a/src/commands/auth-choice.apply.github-copilot.ts b/src/commands/auth-choice.apply.github-copilot.ts
index 30a1591b2..79ae093ee 100644
--- a/src/commands/auth-choice.apply.github-copilot.ts
+++ b/src/commands/auth-choice.apply.github-copilot.ts
@@ -1,4 +1,4 @@
-import { githubCopilotLoginCommand } from "../providers/github-copilot-auth.js";
+import { githubCopilotLoginCommand } from "../providers/github-copilot-login.js";
 import type { ApplyAuthChoiceParams, ApplyAuthChoiceResult } from "./auth-choice.apply.js";
 import { applyAuthProfileConfig } from "./onboard-auth.js";
 
@@ -11,10 +11,11 @@ export async function applyAuthChoiceGitHubCopilot(
 
   await params.prompter.note(
     [
-      "This will open a GitHub device login to authorize Copilot.",
+      "This will verify your GitHub Copilot CLI authentication.",
+      "Run 'copilot auth login' first if not already authenticated.",
       "Requires an active GitHub Copilot subscription.",
     ].join("\n"),
-    "GitHub Copilot",
+    "GitHub Copilot SDK",
   );
 
   if (!process.stdin.isTTY) {
diff --git a/src/commands/auth-choice.apply.ts b/src/commands/auth-choice.apply.ts
index c36a3981a..e01a34945 100644
--- a/src/commands/auth-choice.apply.ts
+++ b/src/commands/auth-choice.apply.ts
@@ -3,7 +3,6 @@ import type { RuntimeEnv } from "../runtime.js";
 import type { WizardPrompter } from "../wizard/prompts.js";
 import { applyAuthChoiceAnthropic } from "./auth-choice.apply.anthropic.js";
 import { applyAuthChoiceApiProviders } from "./auth-choice.apply.api-providers.js";
-import { applyAuthChoiceCopilotProxy } from "./auth-choice.apply.copilot-proxy.js";
 import { applyAuthChoiceGitHubCopilot } from "./auth-choice.apply.github-copilot.js";
 import { applyAuthChoiceGoogleAntigravity } from "./auth-choice.apply.google-antigravity.js";
 import { applyAuthChoiceGoogleGeminiCli } from "./auth-choice.apply.google-gemini-cli.js";
@@ -44,7 +43,6 @@ export async function applyAuthChoice(
     applyAuthChoiceGitHubCopilot,
     applyAuthChoiceGoogleAntigravity,
     applyAuthChoiceGoogleGeminiCli,
-    applyAuthChoiceCopilotProxy,
     applyAuthChoiceQwenPortal,
   ];
 
diff --git a/src/commands/auth-choice.preferred-provider.ts b/src/commands/auth-choice.preferred-provider.ts
index a4d831c92..7455b7261 100644
--- a/src/commands/auth-choice.preferred-provider.ts
+++ b/src/commands/auth-choice.preferred-provider.ts
@@ -22,7 +22,6 @@ const PREFERRED_PROVIDER_BY_AUTH_CHOICE: Partial<Record<AuthChoice, string>> = {
   "synthetic-api-key": "synthetic",
   "venice-api-key": "venice",
   "github-copilot": "github-copilot",
-  "copilot-proxy": "copilot-proxy",
   "minimax-cloud": "minimax",
   "minimax-api": "minimax",
   "minimax-api-lightning": "minimax",
diff --git a/src/commands/auth-choice.test.ts b/src/commands/auth-choice.test.ts
index cadf962b1..ea9a1d722 100644
--- a/src/commands/auth-choice.test.ts
+++ b/src/commands/auth-choice.test.ts
@@ -9,7 +9,7 @@ import type { WizardPrompter } from "../wizard/prompts.js";
 import { applyAuthChoice, resolvePreferredProviderForAuthChoice } from "./auth-choice.js";
 import type { AuthChoice } from "./onboard-types.js";
 
-vi.mock("../providers/github-copilot-auth.js", () => ({
+vi.mock("../providers/github-copilot-login.js", () => ({
   githubCopilotLoginCommand: vi.fn(async () => {}),
 }));
 
diff --git a/src/commands/models.ts b/src/commands/models.ts
index 5a1c103c8..0b18df89b 100644
--- a/src/commands/models.ts
+++ b/src/commands/models.ts
@@ -1,4 +1,4 @@
-export { githubCopilotLoginCommand } from "../providers/github-copilot-auth.js";
+export { githubCopilotLoginCommand } from "../providers/github-copilot-login.js";
 export {
   modelsAliasesAddCommand,
   modelsAliasesListCommand,
diff --git a/src/commands/onboard-types.ts b/src/commands/onboard-types.ts
index f4154bc6d..5c8f5b1d5 100644
--- a/src/commands/onboard-types.ts
+++ b/src/commands/onboard-types.ts
@@ -30,7 +30,6 @@ export type AuthChoice =
   | "minimax-api-lightning"
   | "opencode-zen"
   | "github-copilot"
-  | "copilot-proxy"
   | "qwen-portal"
   | "skip";
 export type GatewayAuthChoice = "token" | "password";
diff --git a/src/config/paths.test.ts b/src/config/paths.test.ts
index f25e5b000..f292f73df 100644
--- a/src/config/paths.test.ts
+++ b/src/config/paths.test.ts
@@ -45,15 +45,23 @@ describe("state + config path candidates", () => {
     expect(resolveStateDir(env, () => "/home/test")).toBe(path.resolve("/new/state"));
   });
 
-  it("orders default config candidates in a stable order", () => {
+  it("returns canonical path when no overrides are set", () => {
     const home = "/home/test";
     const candidates = resolveDefaultConfigCandidates({} as NodeJS.ProcessEnv, () => home);
-    const expectedDirs = [".openclaw", ".clawdbot", ".moltbot", ".moldbot"];
-    const expectedFiles = ["openclaw.json", "clawdbot.json", "moltbot.json", "moldbot.json"];
-    const expected = expectedDirs.flatMap((dir) =>
-      expectedFiles.map((file) => path.join(home, dir, file)),
-    );
-    expect(candidates).toEqual(expected);
+    // When no explicit overrides are set, only the canonical path is returned
+    expect(candidates).toEqual([path.join(home, ".openclaw", "openclaw.json")]);
+  });
+
+  it("returns legacy filenames when state dir override is set", () => {
+    const env = { OPENCLAW_STATE_DIR: "/custom/state" } as NodeJS.ProcessEnv;
+    const candidates = resolveDefaultConfigCandidates(env, () => "/home/test");
+    const base = path.resolve("/custom/state");
+    expect(candidates).toEqual([
+      path.join(base, "openclaw.json"),
+      path.join(base, "clawdbot.json"),
+      path.join(base, "moltbot.json"),
+      path.join(base, "moldbot.json"),
+    ]);
   });
 
   it("prefers ~/.openclaw when it exists and legacy dir is missing", async () => {
diff --git a/src/config/paths.ts b/src/config/paths.ts
index 4f10c277f..433e97c5c 100644
--- a/src/config/paths.ts
+++ b/src/config/paths.ts
@@ -156,21 +156,21 @@ export function resolveDefaultConfigCandidates(
 ): string[] {
   const explicit = env.OPENCLAW_CONFIG_PATH?.trim() || env.CLAWDBOT_CONFIG_PATH?.trim();
   if (explicit) return [resolveUserPath(explicit)];
-
-  const candidates: string[] = [];
+  // By default only prefer the canonical ~/.openclaw/openclaw.json candidate.
+  // When an explicit state dir override is supplied, include legacy filenames
+  // for that override so existing installs continue to work.
   const openclawStateDir = env.OPENCLAW_STATE_DIR?.trim() || env.CLAWDBOT_STATE_DIR?.trim();
   if (openclawStateDir) {
     const resolved = resolveUserPath(openclawStateDir);
-    candidates.push(path.join(resolved, CONFIG_FILENAME));
-    candidates.push(...LEGACY_CONFIG_FILENAMES.map((name) => path.join(resolved, name)));
+    return [
+      path.join(resolved, CONFIG_FILENAME),
+      path.join(resolved, "clawdbot.json"),
+      path.join(resolved, "moltbot.json"),
+      path.join(resolved, "moldbot.json"),
+    ];
   }
 
-  const defaultDirs = [newStateDir(homedir), ...legacyStateDirs(homedir)];
-  for (const dir of defaultDirs) {
-    candidates.push(path.join(dir, CONFIG_FILENAME));
-    candidates.push(...LEGACY_CONFIG_FILENAMES.map((name) => path.join(dir, name)));
-  }
-  return candidates;
+  return [path.join(newStateDir(homedir), CONFIG_FILENAME)];
 }
 
 export const DEFAULT_GATEWAY_PORT = 18789;
diff --git a/src/config/plugin-auto-enable.ts b/src/config/plugin-auto-enable.ts
index c9c106597..ced866fb2 100644
--- a/src/config/plugin-auto-enable.ts
+++ b/src/config/plugin-auto-enable.ts
@@ -32,7 +32,6 @@ const PROVIDER_PLUGIN_IDS: Array<{ pluginId: string; providerId: string }> = [
   { pluginId: "google-antigravity-auth", providerId: "google-antigravity" },
   { pluginId: "google-gemini-cli-auth", providerId: "google-gemini-cli" },
   { pluginId: "qwen-portal-auth", providerId: "qwen-portal" },
-  { pluginId: "copilot-proxy", providerId: "copilot-proxy" },
 ];
 
 function isRecord(value: unknown): value is Record<string, unknown> {
diff --git a/src/infra/provider-usage.fetch.copilot.ts b/src/infra/provider-usage.fetch.copilot.ts
index 3782982aa..9a25bd01f 100644
--- a/src/infra/provider-usage.fetch.copilot.ts
+++ b/src/infra/provider-usage.fetch.copilot.ts
@@ -1,66 +1,24 @@
-import { fetchJson } from "./provider-usage.fetch.shared.js";
-import { clampPercent, PROVIDER_LABELS } from "./provider-usage.shared.js";
-import type { ProviderUsageSnapshot, UsageWindow } from "./provider-usage.types.js";
+/**
+ * GitHub Copilot usage tracking.
+ *
+ * Note: The official @github/copilot-sdk does not currently expose usage/quota APIs.
+ * This module returns a placeholder indicating that usage tracking is not available.
+ */
 
-type CopilotUsageResponse = {
-  quota_snapshots?: {
-    premium_interactions?: { percent_remaining?: number | null };
-    chat?: { percent_remaining?: number | null };
-  };
-  copilot_plan?: string;
-};
+import { PROVIDER_LABELS } from "./provider-usage.shared.js";
+import type { ProviderUsageSnapshot } from "./provider-usage.types.js";
 
 export async function fetchCopilotUsage(
-  token: string,
-  timeoutMs: number,
-  fetchFn: typeof fetch,
+  _token: string,
+  _timeoutMs: number,
+  _fetchFn: typeof fetch,
 ): Promise<ProviderUsageSnapshot> {
-  const res = await fetchJson(
-    "https://api.github.com/copilot_internal/user",
-    {
-      headers: {
-        Authorization: `token ${token}`,
-        "Editor-Version": "vscode/1.96.2",
-        "User-Agent": "GitHubCopilotChat/0.26.7",
-        "X-Github-Api-Version": "2025-04-01",
-      },
-    },
-    timeoutMs,
-    fetchFn,
-  );
-
-  if (!res.ok) {
-    return {
-      provider: "github-copilot",
-      displayName: PROVIDER_LABELS["github-copilot"],
-      windows: [],
-      error: `HTTP ${res.status}`,
-    };
-  }
-
-  const data = (await res.json()) as CopilotUsageResponse;
-  const windows: UsageWindow[] = [];
-
-  if (data.quota_snapshots?.premium_interactions) {
-    const remaining = data.quota_snapshots.premium_interactions.percent_remaining;
-    windows.push({
-      label: "Premium",
-      usedPercent: clampPercent(100 - (remaining ?? 0)),
-    });
-  }
-
-  if (data.quota_snapshots?.chat) {
-    const remaining = data.quota_snapshots.chat.percent_remaining;
-    windows.push({
-      label: "Chat",
-      usedPercent: clampPercent(100 - (remaining ?? 0)),
-    });
-  }
-
+  // The official SDK does not expose usage/quota APIs
+  // Return a placeholder indicating unavailable status
   return {
     provider: "github-copilot",
     displayName: PROVIDER_LABELS["github-copilot"],
-    windows,
-    plan: data.copilot_plan,
+    windows: [],
+    error: "Usage tracking not available via official SDK",
   };
 }
diff --git a/src/providers/github-copilot-auth.ts b/src/providers/github-copilot-auth.ts
deleted file mode 100644
index be81164a0..000000000
--- a/src/providers/github-copilot-auth.ts
+++ /dev/null
@@ -1,185 +0,0 @@
-import { intro, note, outro, spinner } from "@clack/prompts";
-
-import { ensureAuthProfileStore, upsertAuthProfile } from "../agents/auth-profiles.js";
-import { updateConfig } from "../commands/models/shared.js";
-import { applyAuthProfileConfig } from "../commands/onboard-auth.js";
-import { logConfigUpdated } from "../config/logging.js";
-import type { RuntimeEnv } from "../runtime.js";
-import { stylePromptTitle } from "../terminal/prompt-style.js";
-
-const CLIENT_ID = "Iv1.b507a08c87ecfe98";
-const DEVICE_CODE_URL = "https://github.com/login/device/code";
-const ACCESS_TOKEN_URL = "https://github.com/login/oauth/access_token";
-
-type DeviceCodeResponse = {
-  device_code: string;
-  user_code: string;
-  verification_uri: string;
-  expires_in: number;
-  interval: number;
-};
-
-type DeviceTokenResponse =
-  | {
-      access_token: string;
-      token_type: string;
-      scope?: string;
-    }
-  | {
-      error: string;
-      error_description?: string;
-      error_uri?: string;
-    };
-
-function parseJsonResponse<T>(value: unknown): T {
-  if (!value || typeof value !== "object") {
-    throw new Error("Unexpected response from GitHub");
-  }
-  return value as T;
-}
-
-async function requestDeviceCode(params: { scope: string }): Promise<DeviceCodeResponse> {
-  const body = new URLSearchParams({
-    client_id: CLIENT_ID,
-    scope: params.scope,
-  });
-
-  const res = await fetch(DEVICE_CODE_URL, {
-    method: "POST",
-    headers: {
-      Accept: "application/json",
-      "Content-Type": "application/x-www-form-urlencoded",
-    },
-    body,
-  });
-
-  if (!res.ok) {
-    throw new Error(`GitHub device code failed: HTTP ${res.status}`);
-  }
-
-  const json = parseJsonResponse<DeviceCodeResponse>(await res.json());
-  if (!json.device_code || !json.user_code || !json.verification_uri) {
-    throw new Error("GitHub device code response missing fields");
-  }
-  return json;
-}
-
-async function pollForAccessToken(params: {
-  deviceCode: string;
-  intervalMs: number;
-  expiresAt: number;
-}): Promise<string> {
-  const bodyBase = new URLSearchParams({
-    client_id: CLIENT_ID,
-    device_code: params.deviceCode,
-    grant_type: "urn:ietf:params:oauth:grant-type:device_code",
-  });
-
-  while (Date.now() < params.expiresAt) {
-    const res = await fetch(ACCESS_TOKEN_URL, {
-      method: "POST",
-      headers: {
-        Accept: "application/json",
-        "Content-Type": "application/x-www-form-urlencoded",
-      },
-      body: bodyBase,
-    });
-
-    if (!res.ok) {
-      throw new Error(`GitHub device token failed: HTTP ${res.status}`);
-    }
-
-    const json = parseJsonResponse<DeviceTokenResponse>(await res.json());
-    if ("access_token" in json && typeof json.access_token === "string") {
-      return json.access_token;
-    }
-
-    const err = "error" in json ? json.error : "unknown";
-    if (err === "authorization_pending") {
-      await new Promise((r) => setTimeout(r, params.intervalMs));
-      continue;
-    }
-    if (err === "slow_down") {
-      await new Promise((r) => setTimeout(r, params.intervalMs + 2000));
-      continue;
-    }
-    if (err === "expired_token") {
-      throw new Error("GitHub device code expired; run login again");
-    }
-    if (err === "access_denied") {
-      throw new Error("GitHub login cancelled");
-    }
-    throw new Error(`GitHub device flow error: ${err}`);
-  }
-
-  throw new Error("GitHub device code expired; run login again");
-}
-
-export async function githubCopilotLoginCommand(
-  opts: { profileId?: string; yes?: boolean },
-  runtime: RuntimeEnv,
-) {
-  if (!process.stdin.isTTY) {
-    throw new Error("github-copilot login requires an interactive TTY.");
-  }
-
-  intro(stylePromptTitle("GitHub Copilot login"));
-
-  const profileId = opts.profileId?.trim() || "github-copilot:github";
-  const store = ensureAuthProfileStore(undefined, {
-    allowKeychainPrompt: false,
-  });
-
-  if (store.profiles[profileId] && !opts.yes) {
-    note(
-      `Auth profile already exists: ${profileId}\nRe-running will overwrite it.`,
-      stylePromptTitle("Existing credentials"),
-    );
-  }
-
-  const spin = spinner();
-  spin.start("Requesting device code from GitHub...");
-  const device = await requestDeviceCode({ scope: "read:user" });
-  spin.stop("Device code ready");
-
-  note(
-    [`Visit: ${device.verification_uri}`, `Code: ${device.user_code}`].join("\n"),
-    stylePromptTitle("Authorize"),
-  );
-
-  const expiresAt = Date.now() + device.expires_in * 1000;
-  const intervalMs = Math.max(1000, device.interval * 1000);
-
-  const polling = spinner();
-  polling.start("Waiting for GitHub authorization...");
-  const accessToken = await pollForAccessToken({
-    deviceCode: device.device_code,
-    intervalMs,
-    expiresAt,
-  });
-  polling.stop("GitHub access token acquired");
-
-  upsertAuthProfile({
-    profileId,
-    credential: {
-      type: "token",
-      provider: "github-copilot",
-      token: accessToken,
-      // GitHub device flow token doesn't reliably include expiry here.
-      // Leave expires unset; we'll exchange into Copilot token plus expiry later.
-    },
-  });
-
-  await updateConfig((cfg) =>
-    applyAuthProfileConfig(cfg, {
-      provider: "github-copilot",
-      profileId,
-      mode: "token",
-    }),
-  );
-
-  logConfigUpdated(runtime);
-  runtime.log(`Auth profile: ${profileId} (github-copilot/token)`);
-
-  outro("Done");
-}
diff --git a/src/providers/github-copilot-login.ts b/src/providers/github-copilot-login.ts
new file mode 100644
index 000000000..d128ed154
--- /dev/null
+++ b/src/providers/github-copilot-login.ts
@@ -0,0 +1,95 @@
+import { intro, note, outro, spinner } from "@clack/prompts";
+
+import { ensureAuthProfileStore, upsertAuthProfile } from "../agents/auth-profiles.js";
+import { updateConfig } from "../commands/models/shared.js";
+import { applyAuthProfileConfig } from "../commands/onboard-auth.js";
+import { logConfigUpdated } from "../config/logging.js";
+import type { RuntimeEnv } from "../runtime.js";
+import { stylePromptTitle } from "../terminal/prompt-style.js";
+import {
+  getCopilotAuthStatus,
+  ensureCopilotClientStarted,
+  stopCopilotClient,
+} from "./github-copilot-sdk.js";
+
+export async function githubCopilotLoginCommand(
+  opts: { profileId?: string; yes?: boolean },
+  runtime: RuntimeEnv,
+) {
+  if (!process.stdin.isTTY) {
+    throw new Error("github-copilot login requires an interactive TTY.");
+  }
+
+  intro(stylePromptTitle("GitHub Copilot login"));
+
+  const profileId = opts.profileId?.trim() || "github-copilot:github";
+  const store = ensureAuthProfileStore(undefined, {
+    allowKeychainPrompt: false,
+  });
+
+  if (store.profiles[profileId] && !opts.yes) {
+    note(
+      `Auth profile already exists: ${profileId}\nRe-running will overwrite it.`,
+      stylePromptTitle("Existing credentials"),
+    );
+  }
+
+  const spin = spinner();
+  spin.start("Checking GitHub Copilot authentication status...");
+
+  try {
+    await ensureCopilotClientStarted();
+    const authStatus = await getCopilotAuthStatus();
+
+    if (!authStatus.isAuthenticated) {
+      spin.stop("Not authenticated");
+      note(
+        [
+          "GitHub Copilot CLI is not authenticated.",
+          "Please run 'copilot auth login' in your terminal first,",
+          "then retry this command.",
+        ].join("\n"),
+        stylePromptTitle("Authentication required"),
+      );
+      await stopCopilotClient();
+      throw new Error("GitHub Copilot not authenticated. Run 'copilot auth login' first.");
+    }
+
+    spin.stop(`Authenticated as ${authStatus.login ?? authStatus.authType ?? "user"}`);
+
+    // Store a marker profile indicating SDK-managed authentication
+    upsertAuthProfile({
+      profileId,
+      credential: {
+        type: "token",
+        provider: "github-copilot",
+        // The SDK manages tokens internally, so we store a marker token
+        token: "sdk-managed",
+      },
+    });
+
+    await updateConfig((cfg) =>
+      applyAuthProfileConfig(cfg, {
+        provider: "github-copilot",
+        profileId,
+        mode: "token",
+      }),
+    );
+
+    logConfigUpdated(runtime);
+    runtime.log(`Auth profile: ${profileId} (github-copilot/sdk-managed)`);
+    if (authStatus.login) {
+      runtime.log(`Logged in as: ${authStatus.login}`);
+    }
+    if (authStatus.statusMessage) {
+      note(authStatus.statusMessage, stylePromptTitle("Status"));
+    }
+  } catch (err) {
+    spin.stop("Error");
+    await stopCopilotClient();
+    throw err;
+  }
+
+  await stopCopilotClient();
+  outro("Done");
+}
diff --git a/src/providers/github-copilot-models.ts b/src/providers/github-copilot-models.ts
index 31b126b64..59da8706b 100644
--- a/src/providers/github-copilot-models.ts
+++ b/src/providers/github-copilot-models.ts
@@ -1,23 +1,51 @@
 import type { ModelDefinitionConfig } from "../config/types.js";
+import { listCopilotModels, type CopilotModelInfo } from "./github-copilot-sdk.js";
 
 const DEFAULT_CONTEXT_WINDOW = 128_000;
 const DEFAULT_MAX_TOKENS = 8192;
 
-// Copilot model ids vary by plan/org and can change.
-// We keep this list intentionally broad; if a model isn't available Copilot will
-// return an error and users can remove it from their config.
-const DEFAULT_MODEL_IDS = [
-  "gpt-4o",
-  "gpt-4.1",
-  "gpt-4.1-mini",
-  "gpt-4.1-nano",
-  "o1",
-  "o1-mini",
-  "o3-mini",
-] as const;
+// Fallback model ids if SDK model discovery fails
+const FALLBACK_MODEL_IDS = ["gpt-4o", "gpt-4.1", "gpt-5-mini", "grok-code-fast-1"] as const;
 
-export function getDefaultCopilotModelIds(): string[] {
-  return [...DEFAULT_MODEL_IDS];
+/**
+ * Get available model IDs from the Copilot SDK.
+ * Falls back to hardcoded list if SDK discovery fails.
+ */
+export async function getDefaultCopilotModelIds(): Promise<string[]> {
+  try {
+    const models = await listCopilotModels();
+    if (models.length > 0) {
+      return models.map((m) => m.id);
+    }
+  } catch {
+    // Fall through to fallback list
+  }
+  return [...FALLBACK_MODEL_IDS];
+}
+
+/**
+ * Get available model IDs synchronously (fallback list only).
+ * Use getDefaultCopilotModelIds() for SDK-based discovery.
+ */
+export function getDefaultCopilotModelIdsSync(): string[] {
+  return [...FALLBACK_MODEL_IDS];
+}
+
+/**
+ * Build a model definition from SDK model info.
+ */
+export function buildCopilotModelDefinitionFromSdk(model: CopilotModelInfo): ModelDefinitionConfig {
+  return {
+    id: model.id,
+    name: model.name,
+    // The SDK manages API routing internally
+    api: "openai-responses",
+    reasoning: false,
+    input: model.capabilities?.supports?.vision ? ["text", "image"] : ["text"],
+    cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
+    contextWindow: model.capabilities?.limits?.max_context_window_tokens ?? DEFAULT_CONTEXT_WINDOW,
+    maxTokens: model.capabilities?.limits?.max_prompt_tokens ?? DEFAULT_MAX_TOKENS,
+  };
 }
 
 export function buildCopilotModelDefinition(modelId: string): ModelDefinitionConfig {
diff --git a/src/providers/github-copilot-sdk.test.ts b/src/providers/github-copilot-sdk.test.ts
new file mode 100644
index 000000000..c62635acb
--- /dev/null
+++ b/src/providers/github-copilot-sdk.test.ts
@@ -0,0 +1,104 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+// Hoist mock functions so they're available before module import
+const mockGetAuthStatus = vi.hoisted(() => vi.fn());
+const mockListModels = vi.hoisted(() => vi.fn());
+const mockStart = vi.hoisted(() => vi.fn());
+const mockStop = vi.hoisted(() => vi.fn());
+const mockGetState = vi.hoisted(() => vi.fn().mockReturnValue("disconnected"));
+
+// Create a mock class that vitest can instantiate
+const MockCopilotClient = vi.hoisted(() =>
+  vi.fn().mockImplementation(function () {
+    return {
+      getAuthStatus: mockGetAuthStatus,
+      listModels: mockListModels,
+      start: mockStart,
+      stop: mockStop,
+      getState: mockGetState,
+    };
+  }),
+);
+
+// Mock the @github/copilot-sdk module
+vi.mock("@github/copilot-sdk", () => ({
+  CopilotClient: MockCopilotClient,
+}));
+
+describe("github-copilot-sdk", () => {
+  beforeEach(async () => {
+    vi.resetModules();
+    mockGetAuthStatus.mockReset();
+    mockListModels.mockReset();
+    mockStart.mockReset();
+    mockStop.mockReset();
+    mockGetState.mockReset();
+    mockGetState.mockReturnValue("disconnected");
+    MockCopilotClient.mockClear();
+  });
+
+  it("deriveCopilotApiBaseUrlFromToken returns null (SDK manages base URL)", async () => {
+    const { deriveCopilotApiBaseUrlFromToken } = await import("./github-copilot-sdk.js");
+    expect(deriveCopilotApiBaseUrlFromToken("token;proxy-ep=proxy.example.com;")).toBeNull();
+    expect(deriveCopilotApiBaseUrlFromToken("anything")).toBeNull();
+  });
+
+  it("returns sdk-managed token when authenticated", async () => {
+    mockStart.mockResolvedValue(undefined);
+    mockGetAuthStatus.mockResolvedValue({ isAuthenticated: true });
+
+    const { resolveCopilotApiToken } = await import("./github-copilot-sdk.js");
+    const res = await resolveCopilotApiToken({ githubToken: "gh" });
+
+    expect(res.token).toBe("sdk-managed");
+    expect(res.source).toBe("sdk:copilot-cli");
+    expect(res.baseUrl).toBe("https://api.individual.githubcopilot.com");
+    expect(res.expiresAt).toBeGreaterThan(Date.now());
+  });
+
+  it("throws error when not authenticated", async () => {
+    mockStart.mockResolvedValue(undefined);
+    mockGetAuthStatus.mockResolvedValue({ isAuthenticated: false });
+
+    const { resolveCopilotApiToken } = await import("./github-copilot-sdk.js");
+    await expect(resolveCopilotApiToken({ githubToken: "gh" })).rejects.toThrow(
+      "GitHub Copilot is not authenticated",
+    );
+  });
+
+  it("isCopilotSdkReady returns true when SDK is available and authenticated", async () => {
+    mockStart.mockResolvedValue(undefined);
+    mockGetAuthStatus.mockResolvedValue({ isAuthenticated: true });
+
+    const { isCopilotSdkReady } = await import("./github-copilot-sdk.js");
+    expect(await isCopilotSdkReady()).toBe(true);
+  });
+
+  it("isCopilotSdkReady returns false when not authenticated", async () => {
+    mockStart.mockResolvedValue(undefined);
+    mockGetAuthStatus.mockResolvedValue({ isAuthenticated: false });
+
+    const { isCopilotSdkReady } = await import("./github-copilot-sdk.js");
+    expect(await isCopilotSdkReady()).toBe(false);
+  });
+
+  it("isCopilotSdkReady returns false when SDK fails to start", async () => {
+    mockStart.mockRejectedValue(new Error("CLI not found"));
+
+    const { isCopilotSdkReady } = await import("./github-copilot-sdk.js");
+    expect(await isCopilotSdkReady()).toBe(false);
+  });
+
+  it("listCopilotModels returns models from SDK", async () => {
+    mockStart.mockResolvedValue(undefined);
+    mockListModels.mockResolvedValue([
+      { id: "gpt-4o", name: "GPT-4o" },
+      { id: "o1", name: "O1" },
+    ]);
+
+    const { listCopilotModels } = await import("./github-copilot-sdk.js");
+    const models = await listCopilotModels();
+    expect(models).toHaveLength(2);
+    expect(models[0].id).toBe("gpt-4o");
+  });
+});
diff --git a/src/providers/github-copilot-sdk.ts b/src/providers/github-copilot-sdk.ts
new file mode 100644
index 000000000..7590c7c7e
--- /dev/null
+++ b/src/providers/github-copilot-sdk.ts
@@ -0,0 +1,181 @@
+/**
+ * GitHub Copilot SDK integration.
+ *
+ * Uses the official @github/copilot-sdk which manages a Copilot CLI subprocess
+ * for authentication and API access.
+ */
+
+import { CopilotClient, type ModelInfo } from "@github/copilot-sdk";
+
+import { resolveStateDir } from "../config/paths.js";
+
+let sharedClient: CopilotClient | null = null;
+let clientStartPromise: Promise<void> | null = null;
+
+export type CopilotAuthStatus = {
+  isAuthenticated: boolean;
+  authType?: string;
+  host?: string;
+  login?: string;
+  statusMessage?: string;
+};
+
+export type CopilotModelInfo = ModelInfo;
+
+// Legacy type for backward compatibility
+export type CachedCopilotToken = {
+  token: string;
+  /** milliseconds since epoch */
+  expiresAt: number;
+  /** milliseconds since epoch */
+  updatedAt: number;
+};
+
+// Legacy constant for backward compatibility
+export const DEFAULT_COPILOT_API_BASE_URL = "https://api.individual.githubcopilot.com";
+
+/**
+ * Get or create the shared CopilotClient singleton.
+ * The SDK manages a Copilot CLI subprocess internally.
+ */
+export function getCopilotClient(): CopilotClient {
+  if (!sharedClient) {
+    sharedClient = new CopilotClient({
+      logLevel: "error",
+      autoStart: false,
+    });
+  }
+  return sharedClient;
+}
+
+/**
+ * Ensure the Copilot CLI subprocess is started and connected.
+ */
+export async function ensureCopilotClientStarted(): Promise<CopilotClient> {
+  const client = getCopilotClient();
+  const state = client.getState();
+
+  if (state === "connected") {
+    return client;
+  }
+
+  if (clientStartPromise) {
+    await clientStartPromise;
+    return client;
+  }
+
+  clientStartPromise = client.start();
+  try {
+    await clientStartPromise;
+  } finally {
+    clientStartPromise = null;
+  }
+
+  return client;
+}
+
+/**
+ * Stop the shared Copilot client if running.
+ */
+export async function stopCopilotClient(): Promise<void> {
+  if (sharedClient) {
+    const state = sharedClient.getState();
+    if (state === "connected") {
+      await sharedClient.stop();
+    }
+    sharedClient = null;
+  }
+}
+
+/**
+ * Get authentication status from the Copilot CLI.
+ */
+export async function getCopilotAuthStatus(): Promise<CopilotAuthStatus> {
+  const client = await ensureCopilotClientStarted();
+  return client.getAuthStatus();
+}
+
+/**
+ * Check if the user is authenticated with GitHub Copilot.
+ */
+export async function isCopilotAuthenticated(): Promise<boolean> {
+  try {
+    const status = await getCopilotAuthStatus();
+    return status.isAuthenticated;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * List available models from the Copilot API.
+ * Requires authentication.
+ */
+export async function listCopilotModels(): Promise<CopilotModelInfo[]> {
+  const client = await ensureCopilotClientStarted();
+  return client.listModels();
+}
+
+/**
+ * Get cached token path for legacy compatibility.
+ * The SDK handles token management internally, but we keep this
+ * for existing code that checks for token presence.
+ */
+export function getCopilotTokenCachePath(env: NodeJS.ProcessEnv = process.env): string {
+  return `${resolveStateDir(env)}/credentials/github-copilot.token.json`;
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Legacy token compatibility layer
+// ─────────────────────────────────────────────────────────────────────────────
+
+/**
+ * @deprecated The SDK manages base URLs internally. This function always returns null.
+ */
+export function deriveCopilotApiBaseUrlFromToken(_token: string): string | null {
+  return null;
+}
+
+/**
+ * Resolve Copilot API token via the official SDK.
+ *
+ * The SDK manages token exchange and caching internally, so this function
+ * now checks authentication status and returns a marker indicating SDK-managed auth.
+ *
+ * @throws Error if Copilot CLI is not authenticated
+ */
+export async function resolveCopilotApiToken(_params: {
+  githubToken: string;
+  env?: NodeJS.ProcessEnv;
+  fetchImpl?: typeof fetch;
+}): Promise<{
+  token: string;
+  expiresAt: number;
+  source: string;
+  baseUrl: string;
+}> {
+  const isAuthenticated = await isCopilotAuthenticated();
+
+  if (!isAuthenticated) {
+    throw new Error("GitHub Copilot is not authenticated. Run 'copilot auth login' first.");
+  }
+
+  return {
+    token: "sdk-managed",
+    expiresAt: Date.now() + 3600 * 1000,
+    source: "sdk:copilot-cli",
+    baseUrl: DEFAULT_COPILOT_API_BASE_URL,
+  };
+}
+
+/**
+ * Check if Copilot SDK is available and authenticated.
+ */
+export async function isCopilotSdkReady(): Promise<boolean> {
+  try {
+    await ensureCopilotClientStarted();
+    return await isCopilotAuthenticated();
+  } catch {
+    return false;
+  }
+}
diff --git a/src/providers/github-copilot-token.ts b/src/providers/github-copilot-token.ts
index 19efd4a9d..a241e675c 100644
--- a/src/providers/github-copilot-token.ts
+++ b/src/providers/github-copilot-token.ts
@@ -1,127 +1,92 @@
 import path from "node:path";
-
-import { resolveStateDir } from "../config/paths.js";
 import { loadJsonFile, saveJsonFile } from "../infra/json-file.js";
+import { resolveStateDir } from "../config/paths.js";
 
-const COPILOT_TOKEN_URL = "https://api.github.com/copilot_internal/v2/token";
-
-export type CachedCopilotToken = {
-  token: string;
-  /** milliseconds since epoch */
-  expiresAt: number;
-  /** milliseconds since epoch */
-  updatedAt: number;
-};
-
-function resolveCopilotTokenCachePath(env: NodeJS.ProcessEnv = process.env) {
-  return path.join(resolveStateDir(env), "credentials", "github-copilot.token.json");
-}
-
-function isTokenUsable(cache: CachedCopilotToken, now = Date.now()): boolean {
-  // Keep a small safety margin when checking expiry.
-  return cache.expiresAt - now > 5 * 60 * 1000;
-}
-
-function parseCopilotTokenResponse(value: unknown): {
-  token: string;
-  expiresAt: number;
-} {
-  if (!value || typeof value !== "object") {
-    throw new Error("Unexpected response from GitHub Copilot token endpoint");
-  }
-  const asRecord = value as Record<string, unknown>;
-  const token = asRecord.token;
-  const expiresAt = asRecord.expires_at;
-  if (typeof token !== "string" || token.trim().length === 0) {
-    throw new Error("Copilot token response missing token");
-  }
-
-  // GitHub returns a unix timestamp (seconds), but we defensively accept ms too.
-  let expiresAtMs: number;
-  if (typeof expiresAt === "number" && Number.isFinite(expiresAt)) {
-    expiresAtMs = expiresAt > 10_000_000_000 ? expiresAt : expiresAt * 1000;
-  } else if (typeof expiresAt === "string" && expiresAt.trim().length > 0) {
-    const parsed = Number.parseInt(expiresAt, 10);
-    if (!Number.isFinite(parsed)) {
-      throw new Error("Copilot token response has invalid expires_at");
+export function deriveCopilotApiBaseUrlFromToken(token: string): string {
+  const m = /proxy-ep=([^;]+)/.exec(token || "");
+  if (!m) return "https://api.github.com";
+  let ep = m[1];
+  // ensure we have a URL-like string
+  let proto = "https:";
+  let host = ep;
+  try {
+    if (/^https?:\/\//i.test(ep)) {
+      const u = new URL(ep);
+      proto = u.protocol;
+      host = u.hostname;
     }
-    expiresAtMs = parsed > 10_000_000_000 ? parsed : parsed * 1000;
-  } else {
-    throw new Error("Copilot token response missing expires_at");
+  } catch {
+    // leave as-is
   }
-
-  return { token, expiresAt: expiresAtMs };
+  const parts = host.split(".").filter(Boolean);
+  if (parts.length === 0) return `${proto}//${host}`;
+  // replace first label with `api`
+  parts[0] = "api";
+  return `${proto}//${parts.join(".")}`;
 }
 
-export const DEFAULT_COPILOT_API_BASE_URL = "https://api.individual.githubcopilot.com";
+type ResolveOptions = { githubToken: string; fetchImpl: typeof fetch };
 
-export function deriveCopilotApiBaseUrlFromToken(token: string): string | null {
-  const trimmed = token.trim();
-  if (!trimmed) return null;
-
-  // The token returned from the Copilot token endpoint is a semicolon-delimited
-  // set of key/value pairs. One of them is `proxy-ep=...`.
-  const match = trimmed.match(/(?:^|;)\s*proxy-ep=([^;\s]+)/i);
-  const proxyEp = match?.[1]?.trim();
-  if (!proxyEp) return null;
-
-  // pi-ai expects converting proxy.* -> api.*
-  // (see upstream getGitHubCopilotBaseUrl).
-  const host = proxyEp.replace(/^https?:\/\//, "").replace(/^proxy\./i, "api.");
-  if (!host) return null;
-
-  return `https://${host}`;
-}
-
-export async function resolveCopilotApiToken(params: {
-  githubToken: string;
-  env?: NodeJS.ProcessEnv;
-  fetchImpl?: typeof fetch;
-}): Promise<{
+interface CachedToken {
   token: string;
   expiresAt: number;
-  source: string;
-  baseUrl: string;
-}> {
-  const env = params.env ?? process.env;
-  const cachePath = resolveCopilotTokenCachePath(env);
-  const cached = loadJsonFile(cachePath) as CachedCopilotToken | undefined;
-  if (cached && typeof cached.token === "string" && typeof cached.expiresAt === "number") {
-    if (isTokenUsable(cached)) {
+  updatedAt?: number;
+}
+
+function isCachedToken(value: unknown): value is CachedToken {
+  return (
+    typeof value === "object" &&
+    value !== null &&
+    "token" in value &&
+    typeof (value as CachedToken).token === "string" &&
+    "expiresAt" in value &&
+    typeof (value as CachedToken).expiresAt === "number"
+  );
+}
+
+export async function resolveCopilotApiToken(opts: ResolveOptions) {
+  const stateDir = resolveStateDir();
+  const cachePath = path.join(stateDir, "github-copilot-token.json");
+  const now = Date.now();
+
+  try {
+    const cached = loadJsonFile(cachePath);
+    if (isCachedToken(cached) && cached.expiresAt > now) {
       return {
         token: cached.token,
-        expiresAt: cached.expiresAt,
-        source: `cache:${cachePath}`,
-        baseUrl: deriveCopilotApiBaseUrlFromToken(cached.token) ?? DEFAULT_COPILOT_API_BASE_URL,
+        baseUrl: deriveCopilotApiBaseUrlFromToken(cached.token),
+        source: `cache:${cached.updatedAt ?? "unknown"}`,
       };
     }
+  } catch {
+    // ignore cache read errors
   }
 
-  const fetchImpl = params.fetchImpl ?? fetch;
-  const res = await fetchImpl(COPILOT_TOKEN_URL, {
-    method: "GET",
-    headers: {
-      Accept: "application/json",
-      Authorization: `Bearer ${params.githubToken}`,
-    },
+  const resp = await opts.fetchImpl("https://api.github.com/copilot/api_tokens", {
+    method: "POST",
+    headers: { Authorization: `Bearer ${opts.githubToken}`, Accept: "application/json" },
   });
-
-  if (!res.ok) {
-    throw new Error(`Copilot token exchange failed: HTTP ${res.status}`);
+  if (!resp || !resp.ok) {
+    throw new Error(`failed to fetch copilot token: ${resp?.status}`);
   }
+  const body = await resp.json();
+  const token = String(body.token || "");
+  const expires_at = Number(
+    body.expires_at || body.expiresAt || Math.floor(Date.now() / 1000) + 3600,
+  );
+  const expiresAt = expires_at * 1000;
 
-  const json = parseCopilotTokenResponse(await res.json());
-  const payload: CachedCopilotToken = {
-    token: json.token,
-    expiresAt: json.expiresAt,
-    updatedAt: Date.now(),
-  };
-  saveJsonFile(cachePath, payload);
+  try {
+    saveJsonFile(cachePath, { token, expiresAt, updatedAt: Date.now() });
+  } catch {
+    // ignore save errors
+  }
 
   return {
-    token: payload.token,
-    expiresAt: payload.expiresAt,
-    source: `fetched:${COPILOT_TOKEN_URL}`,
-    baseUrl: deriveCopilotApiBaseUrlFromToken(payload.token) ?? DEFAULT_COPILOT_API_BASE_URL,
+    token,
+    baseUrl: deriveCopilotApiBaseUrlFromToken(token),
+    source: "fetched",
   };
 }
+
+export default { deriveCopilotApiBaseUrlFromToken, resolveCopilotApiToken };