MCP Connection with OAuth

[isqc]

I have defined an MCP Server connection to an MCP Server which I control.

This works fine (after some hiccups, had to deal with this: https://support.servicenow.com/kb?id=kb_article_view&sys_kb_id=f2b77e69935efe188960fb2d6cba10be) when authentication is set to API key.

But when authentication is set to OAuth 2.1, the request to establish the connection is rejected with a 401 error, because it does not include the Authentication Bearer <token> Header. I have obtained an OAuth token from the connection which is used by my MCP Server definition, so I'm not sure what's going on.

I do see these errors in the system log

*** Script: sn_mcp_client.McpServerDao: Data not found in: sn_mcp_server
*** Script: sn_mcp_client.McpClientServerSessionMappingDao: Data not found in: sn_mcp_client_server_session_mapping
*** Script: sn_mcp_client.MCPConnectionManager: Error sending initialization request: Failed to execute Flow Action {0}, Error: {1}

But the MCP Server connection I am using IS defined in sn_mcp_server, with correct links to all the OAuth authentication records. 

Any help much appreciated

Thanks  

[Tanushree Maiti]

Have you tried to hit the endpoint using postman to check all integration parameter like url, credential is fine.

Check this links, if it helps you.

Solved: MCP Client Plugin not working - ServiceNow Community

Solved: MCP Client Plugin not working - ServiceNow Community