fix(oauth): pass bearer token to all streamable http requests#476
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alexhancock merged 2 commits intomodelcontextprotocol:mainfrom Oct 7, 2025
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There was an errant typo in the CHANGELOG that is breaking CI
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Aligns with my understanding
per https://modelcontextprotocol.io/specification/draft/basic/authorization#token-requirements |
alexhancock
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Oct 7, 2025
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@gpeal thank you very much for this fix, our MCP wasn't working properly and was planning to dig into |
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Oct 21, 2025
[Release notes](https://github.com/modelcontextprotocol/rust-sdk/releases) Notably, this picks up two of my PRs that have four separate fixes for oauth dynamic client registration and auth modelcontextprotocol/rust-sdk#489 modelcontextprotocol/rust-sdk#476
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Oct 24, 2025
[Release notes](https://github.com/modelcontextprotocol/rust-sdk/releases) Notably, this picks up two of my PRs that have four separate fixes for oauth dynamic client registration and auth modelcontextprotocol/rust-sdk#489 modelcontextprotocol/rust-sdk#476
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[Release notes](https://github.com/modelcontextprotocol/rust-sdk/releases) Notably, this picks up two of my PRs that have four separate fixes for oauth dynamic client registration and auth modelcontextprotocol/rust-sdk#489 modelcontextprotocol/rust-sdk#476
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Nov 10, 2025
[Release notes](https://github.com/modelcontextprotocol/rust-sdk/releases) Notably, this picks up two of my PRs that have four separate fixes for oauth dynamic client registration and auth modelcontextprotocol/rust-sdk#489 modelcontextprotocol/rust-sdk#476
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Nov 14, 2025
[Release notes](https://github.com/modelcontextprotocol/rust-sdk/releases) Notably, this picks up two of my PRs that have four separate fixes for oauth dynamic client registration and auth modelcontextprotocol/rust-sdk#489 modelcontextprotocol/rust-sdk#476
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Dec 2, 2025
[Release notes](https://github.com/modelcontextprotocol/rust-sdk/releases) Notably, this picks up two of my PRs that have four separate fixes for oauth dynamic client registration and auth modelcontextprotocol/rust-sdk#489 modelcontextprotocol/rust-sdk#476
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Jan 27, 2026
…ontextprotocol#476) * fix(oauth): attach bearer token to all streaming http requests * fix(typo): fix an unrelated typo There was an errant typo in the CHANGELOG that is breaking CI
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Motivation and Context
The auth token wasn't passed to all endpoints which causes 401s in some MCP servers such as GitHub's.
I also clarified that the auth header should be just the bearer token rather than the full header value.
It is possible that some clients were passing in the wrong value here (like Codex)
Please confirm that this is the expected behavior.
How Has This Been Tested?
I was able to repro the GitHub MCP 401 and confirm that it works after this change
Codex:
Breaking Changes
None.
Types of changes
Checklist
Additional context
I wrote the core code by hand (it also matches #464) but codex wrote the tests.
Fixes #464