Passing JWT from agent to an MCP Tool Server

[hobbsax1]

We are trying to take a JWT token that comes in when a user calls an ASP.NET Core API to run an agent and then pass that JWT as auth to MCP tool calls.

Other than recreating the agents and MCP tool server setup is there any way to take the JWT token we receive and then pass that along in the call to our MCP tools?

We currently have a workflow setup that has N agents (in handoff mode) and then some of the agents load MCP tools from different servers to perform functions for the users, but those tools require JWT for auth to verify claims/perms/etc.

[moonbox3]

Adding @SergeyMenshykh

[SergeyMenshykh]

Hi @hobbsax1, I did a quick search for auth-related discussions - https://github.com/modelcontextprotocol/csharp-sdk/discussions?discussions_q=is%3Aopen+auth in the C# MCP SDK and found a few. Please have a look, and if none are related to your scenario, please open a new one to get advice from MCP SMEs.