Trouble Connecting with Higgsfield

[baileygrace]

MCP server URL

https://higgsfield.ai/mcp

Where does the issue occur?

When pressing the Connect button

Transport used

streamable-http

Client registration type

My server does not have auth

SSE only: Does your server return the expected status code for POST requests?

Not applicable (my server does not use SSE)

When did you last reproduce this?

2026 05-09---8:43 cst

Browser and OS

mac os 15.6.1

Describe the issue

ofid_e78c984d107d58f0"

Issue details

can not get higgsfield to connect

Expected behavior

connect to higgsfield

Logs from your server

error says "Couldn't reach the MCP server. You can check the server URL and verify the server is running. If this persists, share this reference with support: "ofid_3fbd280647bd92d1"

Additional context

No response

[localden]

Thanks for the report. We traced the request IDs you provided. The connection fails because higgsfield.ai does not expose OAuth authorization server metadata at the expected discovery paths, and dynamic client registration returns 404. This is a configuration gap on the Higgsfield side. Please reach out to them to confirm their MCP server supports OAuth discovery, or share the specific connection URL they document.