UCP Checker MCP MCP server

An MCP server that allows AI agents to check domain readiness for the Universal Commerce Protocol, resolve verified storefronts, search product catalogs, and discover store capabilities. It provides read-only access to a continuously updated index of over 23,000 monitored stores, enabling agents to validate UCP manifests and find transactable merchants without requiring API keys.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by UCP Checker

MCP endpoint (Streamable HTTP)

https://ucpchecker.com/mcp

Vendor documentation

What you can do with it

Check if a domain supports Universal Commerce Protocol
Search product catalogs across verified UCP stores
Resolve verified storefronts for AI shopping agents
Audit UCP manifest structure and conformance

Tools advertised by the last live check:

list-stores
list-categories
check-domain
discover-store
search-catalog
search-all
search-policies
get-product-details

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http ucp-checker-mcp https://ucpchecker.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add ucp-checker-mcp --url https://ucpchecker.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable ucp-checker-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "ucp-checker-mcp": {
      "url": "https://ucpchecker.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "ucp-checker-mcp": {
      "type": "streamableHttp",
      "url": "https://ucpchecker.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start ucp-checker-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "ucp-checker-mcp": {
      "type": "http",
      "url": "https://ucpchecker.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http ucp-checker-mcp https://ucpchecker.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "ucp-checker-mcp": {
      "url": "https://ucpchecker.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "ucp-checker-mcp": {
      "serverUrl": "https://ucpchecker.com/mcp"
    }
  }
}

See all 353

Do you run UCP Checker MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

Claim this listing