Looktwice

npm version license 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 — new workspaces receive 100 trial API units.
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