Support Cursor OAuth client registration by sam-tombury · Pull Request #895 · modelcontextprotocol/python-sdk
Relaxes the restriction on redirect_uri during OAuth client registration (and token flows) from AnyHttpUrl to AnyUrl.
Motivation and Context
Cursor uses deeplinks with a custom scheme for redirect_uri when registering OAuth clients for MCP, which currently fails validation (as it is not a valid AnyHttpUrl).
How Has This Been Tested?
Tested an MCP server using this branch and successfully registered Cursor as an OAuth client.
Breaking Changes
Types of changes
- Bug fix (non-breaking change which fixes an issue)
- New feature (non-breaking change which adds functionality)
- Breaking change (fix or feature that would cause existing functionality to change)
- Documentation update
Checklist
- I have read the MCP Documentation
- My code follows the repository's style guidelines
- New and existing tests pass locally
- I have added appropriate error handling
- I have added or updated documentation as needed