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Title: Update routing for streamable HTTP to avoid 307 redirect by yurikunash · Pull Request #1115 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: Update routing for streamable HTTP to avoid 307 redirect by yurikunash · Pull Request #1115 · modelcontextprotocol/python-sdk

X Title: Update routing for streamable HTTP to avoid 307 redirect by yurikunash · Pull Request #1115 · modelcontextprotocol/python-sdk

Description: Setup the endpoint for the streamable HTTP (/mcp) in the routing table as a route served by an ASGI app, instead of mounting it as a base path. Resolves: #732 As mentioned in MCP specification (version 2025-06-18): The server MUST provide a single HTTP endpoint path (hereafter referred to as the MCP endpoint) that supports both POST and GET methods. For example, this could be a URL like https://example.com/mcp This also aligns with JSON-RPC specification. Motivation and Context The change is required to avoid a 307 Temporary Redirect, from /mcp to /mcp/ endpoint, which currently happens. The redirect causes issues for several popular clients and also impedes hosting MCP servers behind proxy servers. How Has This Been Tested? Tested locally and on a remote server with MCP clients. Breaking Changes The users who have MCP clients configured to consume the endpoint with a slash, e.g. /mcp/, will start experiencing a 307 Temporary redirect to the endpoint without the slash /mcp. 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 Additional context

Open Graph Description: Setup the endpoint for the streamable HTTP (/mcp) in the routing table as a route served by an ASGI app, instead of mounting it as a base path. Resolves: #732 As mentioned in MCP specification (ver...

X Description: Setup the endpoint for the streamable HTTP (/mcp) in the routing table as a route served by an ASGI app, instead of mounting it as a base path. Resolves: #732 As mentioned in MCP specification (ver...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/1115

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17f5444 Remove submounting for streamable http app yurikunash Jul 10, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/1115/commits/17f5444827051b261bc9250358f91d0997f8dd81
512cf58 Merge branch 'main' into 307_redirect yurikunash Jul 10, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/1115/commits/512cf58751760e1b7efdb2b94683149316c92a75
eca75ea Remove circular import yurikunash Jul 10, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/1115/commits/eca75ea80b8119627c05839b8c646eb402ba8445
6faa20d Add empty line yurikunash Jul 10, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/1115/commits/6faa20d49dd6fc06498f5160f7661e693703c336
f1bcba0 Merge branch 'main' into 307_redirect yurikunash Jul 10, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/1115/commits/f1bcba0806e1353007468401370231b851a43ce7
86cc5a3 Merge branch 'main' into 307_redirect ihrpr Jul 11, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/1115/commits/86cc5a3aeb2255e6cdb0157af5803d192287a953
9cb5441 test and ruff ihrpr Jul 11, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/1115/commits/9cb54415318b25d76f97f8ae2c9c71338415b8c3
8ad5fc3 filter out deprecation warning for lowest version in test ihrpr Jul 11, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/1115/commits/8ad5fc364029be017f9f812f0fe36f40b36a1763
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