We are connecting Blob (https://app.blob.cloud), an AI agent platform, to Vercel's official remote MCP server (https://mcp.vercel.com) via OAuth 2.1 + PKCE with Dynamic Client Registration. DCR succeeds for localhost but returns 400 invalid_redirect_uri ("The provided redirect URIs are not approved for use by this authorization server") for our hosted callback.
Please allowlist our redirect URI (or issue us an approved MCP client_id):
- redirect_uri: https://app.blob.cloud/oauth/callback
- flow: authorization_code + PKCE (S256), public client (token_endpoint_auth_method: none)
- client name: Blob
- contact: kyler@actionintelligence.com
Happy to complete any client security review. Thank you!