{
  "serverInfo": {
    "name": "1lookup",
    "version": "1.0.0",
    "vendor": "1Lookup",
    "description": "Phone, email, and IP validation for AI agents. OAuth 2.1, no API key.",
    "homepageUrl": "https://www.1lookup.io/products/mcp",
    "documentationUrl": "https://www.1lookup.io/mcp/oauth"
  },
  "transport": {
    "type": "http",
    "url": "https://app.1lookup.io/api/mcp"
  },
  "authentication": {
    "type": "oauth2",
    "protectedResourceMetadata": "https://app.1lookup.io/.well-known/oauth-protected-resource",
    "authorizationServerMetadata": "https://app.1lookup.io/.well-known/oauth-authorization-server",
    "scopes": ["lookup"]
  },
  "tools": [
    {
      "name": "validate_phone",
      "description": "Validate a phone number: confirms it is real and active, and returns line type, carrier, DNC status, and a fraud/risk score. Spends 1 credit."
    },
    {
      "name": "verify_email",
      "description": "Verify an email address: checks that it exists and is deliverable, and flags disposable, role-based, and risky addresses. Spends 1 credit."
    },
    {
      "name": "ip_lookup",
      "description": "Look up an IP address: geolocation, connection type, and proxy/VPN/Tor/datacenter flags with a fraud/risk score. Spends 1 credit."
    },
    {
      "name": "bulk_verify",
      "description": "Validate up to 50 phones, emails, or IPs in one call. Returns a per-item result array. Spends 1 credit per item."
    },
    {
      "name": "get_account",
      "description": "Get the 1Lookup organization's plan and remaining credits. Free, spends no credits."
    }
  ],
  "notes": "Requires a paid 1Lookup plan; free-plan accounts receive HTTP 403 UPGRADE_REQUIRED. Tool calls draw on the same universal credits as the REST API with no separate MCP fee. Transport is streamable HTTP; SSE is disabled."
}