fix(github-copilot): set Copilot-Integration-Id header to vscode-chat#36574
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zhy-1976 wants to merge 1 commit into
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fix(github-copilot): set Copilot-Integration-Id header to vscode-chat#36574zhy-1976 wants to merge 1 commit into
zhy-1976 wants to merge 1 commit into
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GitHub's Copilot API infers the integration id from the OAuth client id when no Copilot-Integration-Id header is supplied. For opencode's OAuth app, the inferred id maps to "copilot-language-server", which is rejected (403) by newer models such as gpt-5.6-*. Explicitly send Copilot-Integration-Id: vscode-chat so these models work out of the box. Users can override via the OPENCODE_COPILOT_INTEGRATION_ID environment variable.
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Issue for this PR
Closes #36575
Type of change
What does this PR do?
Newer GitHub Copilot models (
gpt-5.6-luna,gpt-5.6-sol,gpt-5.6-terra) return 403 Forbidden from the Copilot chat completions endpoint when used through opencode. Existing models (4.1, 5, 5.5, claude-*, etc.) keep working.Why: when opencode omits the
Copilot-Integration-Idrequest header, GitHub's Copilot API infers the integration id from the OAuth client id. opencode's OAuthCLIENT_ID(Ov23li8tweQw6odWQebz) is registered internally ascopilot-language-server, and that integration is not authorized for the 5.6 model family.Fix: explicitly send
Copilot-Integration-Id: vscode-chaton every Copilot request, with an env override (OPENCODE_COPILOT_INTEGRATION_ID) for advanced users:Two lines changed in
packages/opencode/src/plugin/github-copilot/copilot.ts. No behavior change for models that already worked (they acceptvscode-chattoo).How did you verify your code works?
Reproduced against the live Copilot API with
curlusing the same OAuth-refreshed bearer token, varying only theCopilot-Integration-Idheader:Copilot-Integration-Idgpt-5.6-luna)copilot-language-server)copilot-language-servervscode-chatExisting models (
gpt-4.1,gpt-5,gpt-5.5,claude-*) continue to return 200 withvscode-chatset, matching the behavior with the header omitted.Screenshots / recordings
N/A (no UI change).
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