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Add GitHub Copilot support (#191)

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- OAuth login for GitHub Copilot via /login command
- Support for github.com and GitHub Enterprise
- Models sourced from models.dev (Claude, GPT, Gemini, Grok, etc.)
- Dynamic base URL from token's proxy-ep field
- Use vscode-chat integration ID for API compatibility
- Documentation for model enablement at github.com/settings/copilot/features

Co-authored-by: cau1k <cau1k@users.noreply.github.com>
This commit is contained in:
Mario Zechner 2025-12-15 19:05:17 +01:00
parent ce4ba70d33
commit b66157c649
7 changed files with 664 additions and 726 deletions
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32
packages/coding-agent/src/core/oauth/github-copilot.ts
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@ -4,11 +4,9 @@ const CLIENT_ID = "Iv1.b507a08c87ecfe98";
const COPILOT_HEADERS = {
"User-Agent": "GitHubCopilotChat/0.35.0",
"Editor-Version": "vscode/1.105.1",
"Editor-Version": "vscode/1.107.0",
"Editor-Plugin-Version": "copilot-chat/0.35.0",
"Copilot-Integration-Id": "copilot-developer-cli",
"Openai-Intent": "conversation-edits",
"X-Initiator": "agent",
"Copilot-Integration-Id": "vscode-chat",
} as const;
type DeviceCodeResponse = {
@ -54,9 +52,29 @@ function getUrls(domain: string): {
};
}
export function getGitHubCopilotBaseUrl(enterpriseDomain?: string): string {
if (!enterpriseDomain) return "https://api.githubcopilot.com";
return `https://copilot-api.${enterpriseDomain}`;
/**
* Parse the proxy-ep from a Copilot token and convert to API base URL.
* Token format: tid=...;exp=...;proxy-ep=proxy.individual.githubcopilot.com;...
* Returns API URL like https://api.individual.githubcopilot.com
*/
export function getBaseUrlFromToken(token: string): string | null {
const match = token.match(/proxy-ep=([^;]+)/);
if (!match) return null;
const proxyHost = match[1];
// Convert proxy.xxx to api.xxx
const apiHost = proxyHost.replace(/^proxy\./, "api.");
return `https://${apiHost}`;
}
export function getGitHubCopilotBaseUrl(token?: string, enterpriseDomain?: string): string {
// If we have a token, extract the base URL from proxy-ep
if (token) {
const urlFromToken = getBaseUrlFromToken(token);
if (urlFromToken) return urlFromToken;
}
// Fallback for enterprise or if token parsing fails
if (enterpriseDomain) return `https://copilot-api.${enterpriseDomain}`;
return "https://api.individual.githubcopilot.com";
}
async function fetchJson(url: string, init: RequestInit): Promise<unknown> {