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Title: Add default Origin header for streamable HTTP client by tarunag10 · Pull Request #2752 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: Add default Origin header for streamable HTTP client by tarunag10 · Pull Request #2752 · modelcontextprotocol/python-sdk

X Title: Add default Origin header for streamable HTTP client by tarunag10 · Pull Request #2752 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - Add default Origin header for streamable HTTP client by tarunag10 · Pull Request #2752 · modelcontextprotocol/python-sdk

Open Graph Description: Summary derive a default Origin header from the streamable HTTP endpoint URL include that header on client transport requests when the caller has not supplied an Origin on the provided HTTP client...

X Description: Summary derive a default Origin header from the streamable HTTP endpoint URL include that header on client transport requests when the caller has not supplied an Origin on the provided HTTP client...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2752

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streamable_http client does not send Origin header → rejected with 403 by spec-compliant servers (e.g. go-sdk CrossOriginProtection) https://github.com/modelcontextprotocol/python-sdk/issues/2727
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