OpenCode GitHub Copilot Integration Details

OpenCode GitHub Copilot Integration Details | Generated by AI

Home 2026.05

Yes — OpenCode has first-class GitHub Copilot support with web login (device-code OAuth flow).

Here’s what I found from the source code:

Provider ID: github-copilot (registered in packages/core/src/provider.ts)

Auth flow: OAuth device-code flow (RFC 8628), implemented in packages/opencode/src/plugin/github-copilot/copilot.ts:

You select “Login with GitHub Copilot” in OpenCode
Choose deployment type: GitHub.com or GitHub Enterprise
OpenCode hits https://github.com/login/device/code with client_id Ov23li8tweQw6odWQebz
You get a user code + verification URL (https://github.com/login/device)
You enter the code in your browser, authorize
OpenCode polls https://github.com/login/oauth/access_token until it gets an access token
Token is used as Bearer auth for all Copilot API calls

API endpoint: https://api.githubcopilot.com (or https://copilot-api.<your-ghe-domain> for Enterprise)

What it supports:

Chat completions API and OpenAI Responses API
Vision requests (images)
Agent mode (auto-detected via x-initiator header)
Reasoning/thinking (via reasoning_opaque field)
Model list fetched dynamically from Copilot API
GitHub Enterprise with custom URL

How to use it:

# In OpenCode TUI, go to provider settings
# Select "github-copilot" -> "Login with GitHub Copilot"
# Choose GitHub.com or Enterprise
# Enter the device code at github.com/login/device

No API key needed — it’s your existing GitHub Copilot subscription (individual, business, or enterprise). The auth token gets stored locally by OpenCode’s account system.

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