How to add n8n docs MCP OAuth2 API credential for https://n8n.mcp.kapa.ai/

Questions
1

How to add n8n docs MCP https://n8n.mcp.kapa.ai/
When adding MCP OAuth2 API credential, an error occurs: There was a problem generating the authorization URL. Request failed with status code 404

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image1562×746 50.2 KB

n8n version: 1.122.4
deploy: docker

2

This error typically occurs when the OAuth2 authorization URL is incorrect or unreachable. For the MCP OAuth2 API credential, you’ll need to:

1. Verify the exact OAuth2 endpoints with the MCP documentation

2. Check that the base URL (https://n8n.mcp.kapa.ai/) is correct and accessible from your n8n instance

3. Ensure all required OAuth2 fields (client ID, client secret, auth URL, token URL) are properly configured

The 404 suggests either the auth URL is wrong or the service isn’t available at that endpoint. Double-check with MCP’s API documentation for the correct OAuth2 configuration details.