Welcome to Gummble

The programmable design library — API + MCP for the world's best UI references.

Gummble exposes a curated library of UI references from thousands of apps through a clean REST API and an MCP server your agents can call directly.

Three ways to use Gummble

Where to start

If you have 5 minutes, jump to the Quickstart — you'll have your first authenticated request through by the end of it.

If you want to wire Gummble into your IDE or agent, the MCP setup guide is the fastest path.

If you're building an app that calls Gummble MCP on behalf of your users, start with Build an integration.

If you're integrating server-to-server, start with Authentication and then API overview.

Standards we follow

  • OAuth 2.1 with mandatory PKCE (RFC 7636)
  • RFC 8414 — Authorization Server Metadata
  • RFC 7591 — Dynamic Client Registration
  • RFC 7517 — JWKS
  • RFC 9728 — Protected Resource Metadata
  • RFC 8707 — Resource Indicators

This means any standards-compliant client should work without Gummble-specific code.