I am using ServiceNow Out of the box Quickstart MCP server
I'm trying to connect Claude Desktop to a ServiceNow MCP server using mcp-remote. I have a pre-registered OAuth client (client-id and client-secret provided by ServiceNow). Despite passing these credentials, the connection always fails with:
Discovering OAuth server configuration...Discovered authorization server: https://<instance>.service-now.com/mcp-server/sn_mcp_server_defaultConnecting to remote server: https://<instance>.service-now.com/sncapps/mcp-server/mcp/sn_mcp_server_defaultUsing transport strategy: http-firstConnection error: Error: Incompatible auth server: does not support dynamic client registrationFatal error: Error: Incompatible auth server: does not support dynamic client registration
What I tried:
- Basic config with mcp-remote + --client-id + --client-secret
- Removed --client-secret (only --client-id)
- Upgraded to mcp-remote@latest (resolved to 0.1.38) + added --allow-http
All three attempts produce the same error.
Root cause (my understanding):
mcp-remote seems to expect the OAuth server to support dynamic client registration (RFC 7591). ServiceNow uses pre-registered clients and does not expose a dynamic registration endpoint, so mcp-remote fails before even attempting to use the provided credentials.
Question:
Is there a way to configure mcp-remote to skip dynamic registration and use the provided client-id/client-secret directly? Or is there an alternative approach to connect Claude Desktop to a ServiceNow MCP endpoint that uses pre-registered OAuth clients?
Any help appreciated!
