fix(oauth): send Codex client version header on upstream requests#1770
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fix(oauth): send Codex client version header on upstream requests#1770axelray-dev wants to merge 1 commit into
axelray-dev wants to merge 1 commit into
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Upstream gates newer models on a version header. Attach resolve_codex_version() when non-empty so completions match /models. Fixes agent0ai#1765
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July 15, 2026 20:21
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Summary
The Codex OAuth proxy listed GPT-5.6 family models via
/modelsbut completion calls failed with HTTP 404 Model not found. Upstream gates newer models on a clientversionrequest header.request_codexnever sent that header, while the models catalog already passedclient_versionfromresolve_codex_version().Changes
versionrequest header inrequest_codexwhenresolve_codex_version()returns a non-empty valueFixes #1765
Verification
python3 -m pytest tests/test_oauth_codex.py -q -k "request_codex" -o addopts=(2 passed)Backwards compatibility
No API or config changes. Clients without a resolvable Codex version behave as before (header omitted).