Agent quickstart: add ARC to your agent in one paste

ARC tells an agent whether it can reach checkout at a store, from saved checks. It does not fetch the store live and stops before payment. Server URL:

https://www.arcreport.ai/api/mcp

Then ask: "Use ARC to check allbirds.com". check_store needs no key or login.

Claude Desktop

Easiest: Settings → Connectors → Add custom connector, then paste the server URL above. Or put this in claude_desktop_config.json (it runs the mcp-remote bridge, so Node.js is needed):

{
  "mcpServers": {
    "arc": {
      "command": "npx",
      "args": ["-y", "mcp-remote@0.14.3", "https://www.arcreport.ai/api/mcp"]
    }
  }
}

Format source: Claude Desktop MCP docs. Restart the client after you save.

Cursor

Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (one project):

{
  "mcpServers": {
    "arc": { "url": "https://www.arcreport.ai/api/mcp" }
  }
}

Format source: Cursor MCP docs. Restart the client after you save.

Windsurf

In the Cascade panel, open the … menu, choose Open MCP config file, and add this to mcp_config.json:

{
  "mcpServers": {
    "arc": { "serverUrl": "https://www.arcreport.ai/api/mcp" }
  }
}

Format source: Windsurf MCP docs. Restart the client after you save.

Cline

In Cline, open MCP Servers → Configure → Configure MCP Servers, and add this to cline_mcp_settings.json:

{
  "mcpServers": {
    "arc": {
      "type": "streamableHttp",
      "url": "https://www.arcreport.ai/api/mcp",
      "disabled": false,
      "autoApprove": []
    }
  }
}

Format source: Cline MCP docs. Restart the client after you save.

No MCP? One GET

Pass the store's address with ?url=:

curl -s "https://www.arcreport.ai/api/precheck?url=https://allbirds.com&ref=quickstart-curl"

Read reachable_checkout, confidence, checked_at and stale. If a site turned away ARC's check, or ARC has no saved result, that is unknown, not a no. A missing result never counts against a store.

Full precheck docs → · Every way to connect →