looktwice-mcp

MCP (Model Context Protocol) server for the LookTwice API. Validate emails, EU VAT numbers, IBANs, and domains, and screen products against U.S. CPSC recalls and Product Safety Warnings — directly from Claude Desktop, Cursor, or any MCP client.

npx -y looktwice-mcp

Setup

1. Create a LookTwice account at looktwice.dev — verified accounts receive 100 free API units each month, no credit card required.
2. Create an API key in the dashboard.
3. Add the server to your MCP client configuration:

{
  "mcpServers": {
    "looktwice": {
      "command": "npx",
      "args": ["-y", "looktwice-mcp"],
      "env": {
        "LOOKTWICE_API_KEY": "lt_live_..."
      }
    }
  }
}

Tools

| Tool | What it does | Cost | | ------------------- | --------------------------------------------------------------------------- | ---------- | | email_check | Syntax, MX, disposable, role, free-provider signals (no mailbox probing) | 2 units | | vat_check | Live EU VIES validation with returned business data and request evidence | 1 unit | | iban_check | Country structure, length, and MOD-97 checksum (no account-existence claim) | 1 unit | | domain_check | DNS, MX, TLS, and RDAP state for a registrable domain | Free quota | | cpsc_recall_match | Evidence-backed candidate matching against CPSC recalls and warnings | 3 units | | credits_balance | Current workspace credit balance | Free |

Compared with a single-purpose MCP

Most VAT or email MCP servers wrap one upstream. This server keeps the same evidence rules across email, VIES, IBAN, domain, and CPSC: timestamps, official sources, and no mailbox / account / safety claims.

Honest boundaries

• email_check never claims a mailbox exists (mailbox_status: not_checked).
• iban_check never claims an account exists or belongs to a person.
• cpsc_recall_match returns screening candidates with official sources, not safety, legality, or compliance decisions.

Environment variables

| Variable | Required | Default | | -------------------- | -------- | --------------------------- | | LOOKTWICE_API_KEY | Yes | — | | LOOKTWICE_BASE_URL | No | https://api.looktwice.dev |

License

MIT