looktwice-mcp

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

• Create a LookTwice account at looktwice.dev — verified accounts receive 100 free API units each month, no credit card required.
• Create an API key in the dashboard.
• 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