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Remote MCP (mcp.socket.dev) fails OAuth Dynamic Client Registration in Claude Desktop connectors

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Évaluation

Difficulté
4/5
Temps estimé
3-5 jours
Accessibilité débutants
22/100
Type d'issue
Bug
Clarté
Plutôt claire
Activité
Active
Stack technique
nodejs, typescript
Domaine
api, authentication

Piste de recherche

The failure is in the remote OAuth Dynamic Client Registration flow for https://mcp.socket.dev/, not in a named source file, so start by checking whether this repo contains the server code at all. Fetch /.well-known/oauth-authorization-server and confirm whether a registration_endpoint is advertised and accepts the redirect URI https://claude.ai/api/mcp/auth_callback. Done means Claude Desktop registers and completes sign-in, or the maintainers confirm the fix belongs in an external service.

Rédigé par le modèle d'indexation à partir du texte de l'issue.

Description

Summary

Adding the Socket MCP server as a remote connector in Claude Desktop (https://mcp.socket.dev/) fails at the OAuth Dynamic Client Registration step. Claude can't register with Socket's authorization server, so the connector never authenticates.

Error

Couldn't register with Socket's sign-in service. You can try again, or add an OAuth Client ID in the connector settings. If this persists, share this reference with support: "ofid_03e64c60d9cf295d"

Earlier occurrence (2026-09-17): ofid_325a1efc5e21b2cd

Steps to reproduce

  1. In Claude, open Customize → Connectors.
  2. Select Add custom connector, enter https://mcp.socket.dev/ as the server URL (Team/Enterprise plan: added by an org owner via Organization settings → Connectors).
  3. For OAuth Client, leave it on Register automatically (no Client ID supplied).
  4. Select Connect.

Expected: Socket authorization flow opens, the client registers and the connector connects.
Actual: The registration error above appears; the authorization screen never opens.

Other methods tried (also failing)

  • mcp-remote via npx in claude_desktop_config.json: 
    {
  "mcpServers": {
    "socket-mcp": {
      "command": "npx",
      "args": ["-y", "mcp-remote@latest", "https://mcp.socket.dev/"]
    }
  }
}
    OAuth completes, but the redirect to localhost:<port> fails because no server is listening to accept it.
  • HTTP transport with URL https://mcp.socket.dev/: clicking Connect doesn't open the OAuth screen at all.

Environment

  • Client: Claude Desktop (macOS), Claude Team/Enterprise organization
  • Server: remote https://mcp.socket.dev/
  • Last reproduced: 2026-10-14

Context

Reported through Socket support (Zendesk #3814) on 2026-08-21. Support mentioned it split into three engineering tickets, two of which were closed; the remaining DCR failure is still reproducible. The local DXT extension with an API token was suggested as a workaround, but we'd like the remote OAuth connector working so it can be rolled out org-wide via Connectors.

Possibly worth checking: whether the authorization server's registration_endpoint (RFC 7591 Dynamic Client Registration) is advertised in /.well-known/oauth-authorization-server and accepts Claude's redirect URIs (https://claude.ai/api/mcp/auth_callback).

Langage dominant
TypeScript
Étoiles
137
Forks
45
Merge moyen
12 j 16 h
PR mergées (30 j)
5

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