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Title: enable http headers in sse in the context by abdullahkady · Pull Request #216 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: enable http headers in sse in the context by abdullahkady · Pull Request #216 · modelcontextprotocol/python-sdk

X Title: enable http headers in sse in the context by abdullahkady · Pull Request #216 · modelcontextprotocol/python-sdk

Description: Motivation and Context In the server, it seems like a common case to need to access the raw HTTP headers (think a reverse proxy header, or some custom analytics headers). Example use case, where we have two services that can possibly talk to the MCP server. The servers identify themselves through the X-Client HTTP header. from mcp.server.fastmcp import Context, FastMCP mcp = FastMCP("test_w_headers", port=3001, debug=True) @mcp.tool() def add_sales_lead(lead: str, ctx: Context) -> str: """ Adds a new sales lead. Tracks which app was the originator of this request based on the X-Client custom header """ sales.add_lead(lead, tracking_attrs={"src": ctx.headers.get("X-Client")} return "Lead added successfully" How Has This Been Tested? They were just tested manually locally Breaking Changes No 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: Motivation and Context In the server, it seems like a common case to need to access the raw HTTP headers (think a reverse proxy header, or some custom analytics headers). Example use case, where we...

X Description: Motivation and Context In the server, it seems like a common case to need to access the raw HTTP headers (think a reverse proxy header, or some custom analytics headers). Example use case, where we...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/216

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144db31 enable http headers in sse in the context abdullahkady Feb 19, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/216/commits/144db31f492677e966582a33a0cbfd1dcd50a407
e402103 add todo comment abdullahkady Feb 19, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/216/commits/e402103483fcfa403b413e8c4d319408d400fa26
b6e4576 type instead of try/except abdullahkady Feb 19, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/216/commits/b6e45768f2a9764a4f91e4c1d19d7cb0272daeca
1f146f6 Merge branch 'main' into main abdullahkady Feb 21, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/216/commits/1f146f64b4f2106d2355d94049140f2ea4fb12fb
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