ucp-registry

Discover and search UCP (Universal Commerce Protocol) merchants, products, and store policies.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Discover Merchants: Discover UCP-enabled merchants. Filter by search query, platform, category, or capability. Returns merchant domain, status, UCP score, capabilities, and transports.
  • Get Merchant: Get detailed information about a specific UCP merchant by domain. Returns full manifest data, capabilities, transports, sample products, health metrics, and UCP endpoint.
  • Search Products: Search products across all UCP merchants in the registry. Filter by query, category, price range, and domain. Returns product title, price, merchant, and URLs.

What data it sees

Do you need an account

No: the server works without sign-in

Discover and search UCP (Universal Commerce Protocol) merchants, products, and store policies. Query the open registry of UCP-compliant stores for agentic commerce — find products, compare catalogs, and retrieve merchant metadata.

How to connect

How to connect ucp-registry to Claude

The server address to paste into Claude settings:

https://registry--ucp.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect ucp-registry to ChatGPT

The server address to paste into ChatGPT settings:

https://registry--ucp.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect ucp-registry to Cursor

The server address to paste into Cursor settings:

https://registry--ucp.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (3)

Raw names from tools/list. Only developers need these.

discover-merchantsDiscover UCP-enabled merchants. Filter by search query, platform, category, or capability. Returns merchant domain, status, UCP score, capabilities, and transports.
get-merchantGet detailed information about a specific UCP merchant by domain. Returns full manifest data, capabilities, transports, sample products, health metrics, and UCP endpoint.
search-productsSearch products across all UCP merchants in the registry. Filter by query, category, price range, and domain. Returns product title, price, merchant, and URLs.