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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Question: How to authorise a client with Bearer header with SSE?","articleBody":"I am building the MCP server application to connect some services to LLM . \nOne of things i want to implement is authorisation of a user with the token.\n\nI see it must be possible somehow. Because MCP inspector has the Authentification and Bearer Token field\n\nMost of tutorials about MCP are related to STDIO kind of a server run. My will be SSE.\n\nThere is my code:\n\n```\nfrom mcp.server.fastmcp import FastMCP\nfrom fastapi import FastAPI, Request, Depends, HTTPException\n\napp = FastAPI()\nmcp = FastMCP(\"SMB Share Server\")\n\n@mcp.tool()\ndef create_folder(parent_path: str, name: str) -\u003e str:\n    \"\"\"Create new subfolder in the specified path\"\"\"\n    return f\"Folder {name} created in {parent_path}\"\n\napp.mount(\"/\", mcp.sse_app())\n```\n\nHow can i read Authorization header in case if it is sent by the client?\n\nI tried to use approaches of FastAPI - setting dependency, adding request:Request to arguments but this doesn't work.\n\nIs there a way?","author":{"url":"https://github.com/Gelembjuk","@type":"Person","name":"Gelembjuk"},"datePublished":"2025-04-04T21:22:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":18},"url":"https://github.com/431/python-sdk/issues/431"}