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Pull requests: modelcontextprotocol/python-sdk
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[Security] Bump starlette to >=0.40.0 to fix CVE-2024-47874
#1905
opened Jan 17, 2026 by
RinZ27
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[Security] Harden CLI dev command against injection on Windows
#1904
opened Jan 17, 2026 by
RinZ27
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Run synchronous tools in worker threads to avoid blocking the event loop
#1902
opened Jan 17, 2026 by
pradeeptac
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5 of 9 tasks
feat(client): Add capability_extensions parameter to ClientSession
#1901
opened Jan 17, 2026 by
jerome3o-anthropic
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refactor: move streamable HTTP app creation from FastMCP to lowlevel Server
#1899
opened Jan 16, 2026 by
maxisbey
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ci: add strict-no-cover to detect unnecessary coverage pragmas
#1897
opened Jan 16, 2026 by
maxisbey
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fix: send priming event in GET handler to prevent hang
#1883
opened Jan 16, 2026 by
wukai9203
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3 tasks done
fix: correct unknown tool/prompt/resource error handling
#1872
opened Jan 15, 2026 by
DePasqualeOrg
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6 of 9 tasks
fix(tests): skip proxy for localhost in Windows environments
#1857
opened Jan 15, 2026 by
cxhello
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1 of 2 tasks
fix: suppress GeneratorExit during client cleanup
#1856
opened Jan 14, 2026 by
codefromthecrypt
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5 tasks done
chore: update licensing to Apache 2.0 for new contributions
#1851
opened Jan 12, 2026 by
domdomegg
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Fix: Raise RuntimeError when ClientSession is used without context manager to prevent hangs
#1849
opened Jan 12, 2026 by
newbiehwang
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5 of 9 tasks
fix: add boolean string coercion for FastMCP tool parameters
#1848
opened Jan 12, 2026 by
jayhemnani9910
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5 tasks done
feat: fully support Basic Authorization header at token request
#1847
opened Jan 11, 2026 by
challenger71498
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5 of 9 tasks
fix: respect token_endpoint_auth_method=none when client_secret exists
#1846
opened Jan 9, 2026 by
jayhemnani9910
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feat: add stateless_sse option for SSE transport
#1845
opened Jan 9, 2026 by
jayhemnani9910
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fix: send error on SSE disconnect without resumption token
#1838
opened Jan 7, 2026 by
jayhemnani9910
•
Draft
Added descriptions for arguments taken from docstring
enhancement
Request for a new feature that's not currently supported
P2
Moderate issues affecting some users, edge cases, potentially valuable feature
#1825
opened Jan 4, 2026 by
Ilan-kayesar
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7 of 9 tasks
Add custom content support to ToolError for isError responses
enhancement
Request for a new feature that's not currently supported
P3
Nice to haves, rare edge cases
#1824
opened Jan 4, 2026 by
hanzili
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Added custom validator for Resource mime type which is less retrictiv…
enhancement
Request for a new feature that's not currently supported
P3
Nice to haves, rare edge cases
#1819
opened Dec 31, 2025 by
sighthon
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2 of 5 tasks
fix: auto-reinitialize client session on HTTP 404
bug
Something isn't working
improves spec compliance
When a change improves ability of SDK users to comply with spec definition
P2
Moderate issues affecting some users, edge cases, potentially valuable feature
#1818
opened Dec 31, 2025 by
jayhemnani9910
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7 tasks done
fix: cleanup resources properly on Something isn't working
P1
Significant bug affecting many users, highly requested feature
BaseSession::_receive_loop cleanup
bug
#1817
opened Dec 26, 2025 by
challenger71498
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5 of 9 tasks
Split _perform_authorization_code_grant code
auth
Issues and PRs related to Authentication / OAuth
enhancement
Request for a new feature that's not currently supported
P3
Nice to haves, rare edge cases
#1815
opened Dec 24, 2025 by
HenriChabert
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6 of 9 tasks
fix: Something isn't working
P1
Significant bug affecting many users, highly requested feature
handle_sse_response causing dangling client's read_stream
bug
#1812
opened Dec 21, 2025 by
ivanbelenky
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5 of 9 tasks
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