Feat: Complete GitHub Copilot Student Integration via Device Flow and internal API exchange

apps/x/packages/core/src/auth/github-copilot-auth.ts

@@ -180,9 +180,45 @@ export async function getGitHubCopilotAuthStatus(): Promise<{
 /**
  * Disconnect GitHub Copilot (remove stored tokens)
  */
+/**
+ * Get GitHub Copilot API Token (exchange OAuth token for Copilot JWT)
+ */
+let cachedCopilotToken: { token: string; expiresAt: number } | null = null;
+
+export async function getGitHubCopilotApiToken(): Promise<string> {
+  // Return cached token if valid (with 5 min buffer)
+  if (cachedCopilotToken && cachedCopilotToken.expiresAt > Date.now() / 1000 + 300) {
+    return cachedCopilotToken.token;
+  }
+
+  const oauthToken = await getGitHubCopilotAccessToken();
+  
+  const response = await fetch('https://api.github.com/copilot_internal/v2/token', {
+    headers: {
+      'Authorization': `Bearer ${oauthToken}`,
+      'Accept': 'application/json',
+      'User-Agent': 'GithubCopilot/1.155.0'
+    }
+  });
+
+  if (!response.ok) {
+    const err = await response.text();
+    throw new Error(`Failed to get Copilot token: ${response.status} ${err}`);
+  }
+
+  const data = await response.json() as { token: string; expires_at: number };
+  cachedCopilotToken = {
+    token: data.token,
+    expiresAt: data.expires_at
+  };
+
+  return data.token;
+}
+
 export async function disconnectGitHubCopilot(): Promise<void> {
   console.log('[GitHub Copilot] Disconnecting...');
   const oauthRepo = container.resolve<IOAuthRepo>('oauthRepo');
   await oauthRepo.delete(PROVIDER_NAME);
+  cachedCopilotToken = null;
   console.log('[GitHub Copilot] Disconnected successfully');
 }

apps/x/packages/core/src/auth/github-copilot-models.ts

@@ -4,23 +4,31 @@
  * Handles GitHub Copilot model discovery and LLM provider initialization
  */
 
-import { getGitHubCopilotAccessToken, isGitHubCopilotAuthenticated } from './github-copilot-auth.js';
+import { getGitHubCopilotApiToken, isGitHubCopilotAuthenticated } from './github-copilot-auth.js';
 import { ProviderV2 } from '@ai-sdk/provider';
-import { createOpenAI } from '@ai-sdk/openai';
+import { createOpenAICompatible } from '@ai-sdk/openai-compatible';
 import z from 'zod';
 import { LlmProvider } from '@x/shared/dist/models.js';
 
 // GitHub Copilot API endpoint
-const GITHUB_COPILOT_API_BASE = 'https://models.github.com/api/openai/';
+const GITHUB_COPILOT_API_BASE = 'https://api.githubcopilot.com/';
 
 // List of models available through GitHub Copilot
 // Based on GitHub Copilot API documentation
 // https://docs.github.com/en/copilot/using-github-copilot/asking-github-copilot-questions
 export const GITHUB_COPILOT_MODELS = [
-  'gpt-4o',          // GPT-4 Optimized (recommended)
-  'gpt-4-turbo',     // GPT-4 Turbo
-  'gpt-3.5-turbo',   // GPT-3.5 Turbo (fastest)
-  'claude-3.5-sonnet', // Claude 3.5 Sonnet (if available in plan)
+  'gpt-5.4-mini',
+  'gpt-5-mini',
+  'grok-code-fast-1',
+  'claude-haiku-4.5',
+  'gemini-3-flash-preview',
+  'gpt-5.2',
+  'gpt-4.1',
+  'gpt-4o',
+  'gemini-3.1-pro-preview',
+  'gpt-5.2-codex',
+  'gpt-5.3-codex',
+  'gemini-2.5-pro'
 ] as const;
 
 export type GitHubCopilotModel = typeof GITHUB_COPILOT_MODELS[number];
@@ -57,16 +65,20 @@ export async function createGitHubCopilotProvider(
     );
   }
 
-  // Get access token (will handle refresh if needed)
-  const accessToken = await getGitHubCopilotAccessToken();
+  // Get Copilot API token (handles refresh if needed)
+  const accessToken = await getGitHubCopilotApiToken();
 
   // Create OpenAI-compatible provider with GitHub Copilot endpoint
-  return createOpenAI({
+  return createOpenAICompatible({
+    name: "github-copilot",
     apiKey: accessToken,
     baseURL: config.baseURL || GITHUB_COPILOT_API_BASE,
     headers: {
       ...config.headers,
-      'user-agent': 'Rowboat/1.0',
+      'Editor-Version': 'vscode/1.88.0',
+      'Editor-Plugin-Version': 'copilot-chat/0.14.0',
+      'User-Agent': 'GitHubCopilotChat/0.14.0',
+      'Accept': '*/*',
     },
   });
 }
@@ -88,7 +100,7 @@ export async function testGitHubCopilotConnection(): Promise<{ success: boolean;
     }
 
     // Try to get access token
-    await getGitHubCopilotAccessToken();
+    await getGitHubCopilotApiToken();
 
     return { success: true };
   } catch (error) {

apps/x/packages/core/src/models/gateway.ts

@@ -2,6 +2,7 @@ import { ProviderV2 } from '@ai-sdk/provider';
 import { createOpenRouter } from '@openrouter/ai-sdk-provider';
 import { getAccessToken } from '../auth/tokens.js';
 import { API_URL } from '../config/env.js';
+import { isGitHubCopilotAuthenticated } from '../auth/github-copilot-auth.js';
 
 export async function getGatewayProvider(): Promise<ProviderV2> {
     const accessToken = await getAccessToken();
@@ -31,11 +32,32 @@ export async function listGatewayModels(): Promise<{ providers: ProviderSummary[
     }
     const body = await response.json() as { data: Array<{ id: string }> };
     const models = body.data.map((m) => ({ id: m.id }));
-    return {
-        providers: [{
-            id: 'rowboat',
-            name: 'Rowboat',
-            models,
-        }],
-    };
+    
+    const providers: ProviderSummary[] = [{
+        id: 'rowboat',
+        name: 'Rowboat',
+        models,
+    }];
+
+    // Add GitHub Copilot models always so they appear in UI
+    providers.push({
+        id: "github-copilot",
+        name: "GitHub Copilot Student",
+        models: [
+            { id: "gpt-5.4-mini", name: "GPT-5.4 mini" },
+            { id: "gpt-5-mini", name: "GPT-5 mini" },
+            { id: "grok-code-fast-1", name: "Grok Code Fast 1" },
+            { id: "claude-haiku-4.5", name: "Claude Haiku 4.5" },
+            { id: "gemini-3-flash-preview", name: "Gemini 3 Flash (Preview)" },
+            { id: "gpt-5.2", name: "GPT-5.2" },
+            { id: "gpt-4.1", name: "GPT-4.1" },
+            { id: "gpt-4o", name: "GPT-4o" },
+            { id: "gemini-3.1-pro-preview", name: "Gemini 3.1 Pro (Preview)" },
+            { id: "gpt-5.2-codex", name: "GPT-5.2-Codex" },
+            { id: "gpt-5.3-codex", name: "GPT-5.3-Codex" },
+            { id: "gemini-2.5-pro-preview", name: "Gemini 2.5 Pro (Preview)" }
+        ],
+    });
+
+    return { providers };
 }

apps/x/packages/core/src/models/models-dev.ts

@@ -227,10 +227,18 @@ export async function listOnboardingModels(): Promise<{ providers: ProviderSumma
     id: "github-copilot",
     name: "GitHub Copilot Student",
     models: [
-      { id: "gpt-4o", name: "GPT-4o (Recommended)" },
-      { id: "gpt-4-turbo", name: "GPT-4 Turbo" },
-      { id: "gpt-3.5-turbo", name: "GPT-3.5 Turbo (Fastest)" },
-      { id: "claude-3.5-sonnet", name: "Claude 3.5 Sonnet" },
+      { id: "gpt-5.4-mini", name: "GPT-5.4 mini" },
+      { id: "gpt-5-mini", name: "GPT-5 mini" },
+      { id: "grok-code-fast-1", name: "Grok Code Fast 1" },
+      { id: "claude-haiku-4.5", name: "Claude Haiku 4.5" },
+      { id: "gemini-3-flash-preview", name: "Gemini 3 Flash (Preview)" },
+      { id: "gpt-5.2", name: "GPT-5.2" },
+      { id: "gpt-4.1", name: "GPT-4.1" },
+      { id: "gpt-4o", name: "GPT-4o" },
+      { id: "gemini-3.1-pro-preview", name: "Gemini 3.1 Pro (Preview)" },
+      { id: "gpt-5.2-codex", name: "GPT-5.2-Codex" },
+      { id: "gpt-5.3-codex", name: "GPT-5.3-Codex" },
+      { id: "gemini-2.5-pro-preview", name: "Gemini 2.5 Pro (Preview)" }
     ],
   });