feat: add /openai/v1 passthrough to bedrock-mantle#62

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xiehust merged 22 commits into

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feat/openai-passthrough

May 25, 2026

Commits on May 25, 2026

docs(openai-passthrough): add implementation plan

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docs(design): add OpenAI passthrough endpoints design doc

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feat(openai-passthrough): add ENABLE_OPENAI_PASSTHROUGH flag and respx dev dep
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feat(auth): accept Authorization: Bearer alongside x-api-key
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feat(openai-passthrough): add usage normalization and SSE extraction helpers
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feat(openai-passthrough): add model mapping resolver with passthrough fallback
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feat(usage): record api_surface and reasoning_tokens on usage rows
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feat(openai-passthrough): add httpx singleton client and header helper
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feat(openai-passthrough): add SSE passthrough generator with usage tee
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feat(openai-passthrough): non-streaming /chat/completions endpoint

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test(openai-passthrough): streaming /chat/completions integration tests
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feat(openai-passthrough): /responses endpoint (POST, streaming + non-streaming)
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feat(openai-passthrough): /responses CRUD passthrough (GET, DELETE, cancel, input_items)
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feat(openai-passthrough): /models endpoint passthrough
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test(openai-passthrough): pin guardrail header forwarding behavior
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chore(openai-passthrough): lint and type cleanup
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docs(openai-passthrough): document new feature in env.example, CLAUDE.md, and features.md
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fix(openai-passthrough): yield structured SSE error on upstream timeout; add flag-off and timeout tests

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fix(openai-passthrough): build absolute upstream URLs to preserve /v1 base path

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fix(cdk): propagate ENABLE_OPENAI_PASSTHROUGH env var to ECS task definition

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fix(openai-passthrough): synthesize event: lines for Responses API SSE

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fix(openai-passthrough): surface upstream HTTP errors with real status codes

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