Steps to repro:
- Turn on developer mode in chatgpt
- Try to add custom connector with OAuth & MCP Endpoint:
https://api.supermemory.ai/mcp
- Returns error:
Validation error for RegisterOAuthClientResponse Input should be a valid dictionary or instance of RegisterOAuthClientResponse [type=model_type, input_value='{"client_id":"gQIWiUdSvz...client_name":"ChatGPT"}', input_type=str] For further information visit https://errors.pydantic.dev/2.11/v/model_type
=> Same endpoint works when registering in claude.ai