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fix: accept HTTP 201 status code in token exchange #1503
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Merged
pcarleton
merged 4 commits into
modelcontextprotocol:main
from
jnjpng:fix-oauth-token-status-codes
Dec 19, 2025
Merged
fix: accept HTTP 201 status code in token exchange #1503
pcarleton
merged 4 commits into
modelcontextprotocol:main
from
jnjpng:fix-oauth-token-status-codes
Dec 19, 2025
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−1
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Fixes modelcontextprotocol#1502 Some OAuth servers (like Supabase) return 201 Created instead of 200 OK for successful token exchanges. The OAuth 2.0 spec doesn't mandate a specific success status code, so we should accept both 200 and 201.
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pcarleton
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Oct 24, 2025
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change looks good, can you please add a test?
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@pcarleton done! let me know if this look good |
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@pcarleton what's the status on this? |
pcarleton
previously approved these changes
Dec 19, 2025
pcarleton
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Dec 19, 2025
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@jnjpng sorry about that, missed the ping on this |
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Issues and PRs related to Authentication / OAuth
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Accept HTTP 201 status code in addition to 200 for successful OAuth token exchanges.
Motivation and Context
Fixes #1502, some OAuth servers (like Supabase) return 201 Created instead of 200 OK for successful token exchanges. The OAuth 2.0 spec doesn't mandate a specific success status code, so we should accept both 200 and 201.
How Has This Been Tested?
Tested locally against remote MCP servers that return this status code, and ran the tests specified in the contribution guide.

Breaking Changes
No.
Types of changes
Checklist
Additional context