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MCP Client Plugin not working

isqc
Tera Expert

3 hours ago

I am trying to use an MCP tool from my AI agent. I have created an MCP server definition with my server's URL and API key. The server is running FastMCP v2.13.0.2. 

 

When I try to add the MCP tools to my AI agent, I get an error when the initialize call is made. The return code is 406 and the request body is:


{"method":"initialize","id":"448d1ae3974d7a10c69b341de053afba","jsonrpc":"2.0","params":{"capabiliti**body truncated**

 

I am using version 1.1.2 of the snc_mcp_client plugin. The previous version had issues managing the mcp session, so it only worked between the time when I defined the MCP server connection and until the first session expired. But now I can't even list the tools, because the initialize call itself fails! 

 

Has anyone actually gotten this plugin to work consistently?

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warren_chan
ServiceNow Employee
ServiceNow Employee

2 hours ago

Check your MCP Server Logs [sn_mcp_execution_logs]. It should have some error to go on. Depending on what it is, you can try readding your MCP server and re-initializing the tools/list.

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