GitHub Copilot with Empryo

Already pay for GitHub Copilot? Empryo can drive its models from your existing subscription, no separate API bill. You get Empryo's graph-aware, AST-based agent loop running on Claude, GPT, and Gemini that are already included in your Copilot seat. It is an unofficial integration over the same internal API the IDE extensions use, so treat it as a convenience, not a supported contract.

Setup

Empryo authenticates to Copilot with the OAuth token the IDE extension already wrote to disk, not a normal API key. There is no Copilot key to mint in a dashboard.

Install the GitHub Copilot extension in VS Code or a JetBrains IDE and sign in. This writes your OAuth token to ~/.config/github-copilot/apps.json (~\AppData\Local\github-copilot\apps.json on Windows).

2. Copy the token

jq -r '."github.com".oauth_token' ~/.config/github-copilot/apps.json

3. Save it to Empryo

empryo --set-key copilot <token>

Or run /keys inside the TUI. The token lands in your OS keychain (Login Keychain on macOS, libsecret on Linux, DPAPI on Windows), with an encrypted file fallback.

4. Pick a model and run

Press Ctrl+L in the TUI to choose the copilot provider and a model, or go headless:

empryo --headless --model copilot/claude-sonnet-4 "explain this file"

Optional: set it as the default and route per task

In ~/.empryo/config.json:

{
  "defaultModel": "copilot/claude-sonnet-4",
  "taskRouter": {
    "ember": "copilot/claude-opus-4",
    "spark": "copilot/claude-haiku-4-5",
    "compact": "copilot/gemini-2.5-flash"
  }
}

The task router lets you spend a strong model on code edits (ember) while cheaper models handle research (spark) and compaction — all billed against the same Copilot seat. Verify what is live with empryo --list-models copilot.

When to use it

Pick Copilot when you already pay for a seat and want to avoid a second metered API bill: Claude, GPT, and Gemini are all included, so you can run Empryo's full loop — AST plus LSP edits, the ranked dependency Genome, checkpoints, the task router — at no marginal per-token cost. That is the real strength: flat-rate access to frontier models you would otherwise pay usage rates for. The honest caveats matter. This is an unofficial integration over the same internal endpoint the IDE extensions use; it is not endorsed by GitHub, the API can change without notice, and heavy agent volume can hit rate limits faster than chat-style use. Copilot also gates some models and previews by plan and client, so your available list may be shorter than the full catalog. If you need a guaranteed, supported, high-throughput pipeline (CI, large batch runs) or features tied to a specific provider's native API, use a direct provider key or a gateway instead. For everyday interactive coding on a subscription you already hold, it is hard to beat on price.