feat(integrations): MCP Python SDK

[constantinius]

Description

Adds integration for the MCP Python SDK

Issues

• Closes https://linear.app/getsentry/issue/TET-1267/mcp-python-sdk-integration
• Closes https://linear.app/getsentry/issue/TET-1301/python-mcp-add-tests

[linear]

TET-1267 MCP: python-sdk integration

[codecov]

Codecov Report

❌ Patch coverage is 82.00000% with 45 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.95%. Comparing base (e9738f6) to head (aa6d124).
⚠️ Report is 2 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
sentry_sdk/integrations/mcp.py	79.63%	28 Missing and 17 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4964      +/-   ##
==========================================
- Coverage   83.96%   83.95%   -0.02%     
==========================================
  Files         165      166       +1     
  Lines       17085    17335     +250     
  Branches     3001     3054      +53     
==========================================
+ Hits        14346    14554     +208     
- Misses       1839     1866      +27     
- Partials      900      915      +15     

Files with missing lines	Coverage Δ
sentry_sdk/consts.py	99.40% <100.00%> (+0.05%)	⬆️
sentry_sdk/integrations/__init__.py	87.01% <ø> (ø)
sentry_sdk/integrations/mcp.py	79.63% <79.63%> (ø)

... and 1 file with indirect coverage changes

[linear]

TET-1301 Python-MCP: add tests

[sentrivana]

Code looks great overall! Left a few comments. Will take it for a spin and report back.

[cursor]

Bug: Prompt Handler Argument Merge Order Issue

In _prepare_handler_data, the arguments dictionary for prompt handlers has an incorrect merge order. This allows a user-provided "name" argument to unintentionally overwrite the actual handler_name, leading to misleading mcp.prompt.name span data.