MCP user Authentication

I'm developed an MCP server and need to implement user-specific tools (e.g., get_balance, get_order_status).

Currently, the MCP server lacks a standard way to identify the end-user or receive their authentication token from the host client. To make this work, we need:

1. Pass-through Headers: A way to forward auth tokens to the MCP server.
2. User Context: A method to distinguish requests between different users.

Are there plans to support identity propagation in the MCP spec?

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Originally posted by @RuslanRS on community.tawk.to on 23 March 2026 · 1 vote