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If you pay for GitHub Copilot, SoulForge can use it. Claude Opus/Sonnet, GPT-4o, GPT-5.4, o-series, Gemini 2.5 Pro — all included in your Copilot subscription, no extra cost.
Unofficial integration using the same internal API as VS Code. Not endorsed by GitHub. Use at your own risk.

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Setup

1

Sign in to Copilot in VS Code or JetBrains

Install the Copilot extension in your IDE and sign in. This writes your OAuth token to disk.
2

Copy your token

jq -r '."github.com".oauth_token' ~/.config/github-copilot/apps.json
On Windows the path is ~\AppData\Local\github-copilot\apps.json.
3

Save to SoulForge

soulforge --set-key copilot <token>
Or use /keys inside the TUI.
4

Use it

Press Ctrl+L, pick copilot, choose a model.
soulforge --headless --model copilot/claude-sonnet-4 "explain this file"
We reviewed GitHub’s published terms and Microsoft’s AI Code of Conduct — none prohibit third-party clients using valid Copilot credentials. Full review:
  • API could change without notice.
  • High volume may trigger rate-limiting.
  • Terms could be updated in the future.
One community discussion has a GitHub employee stating the API is “intended solely for officially supported clients” — this is not in any legal document.
Re-verify if GitHub publishes updated terms after 2026-04-04.