looktwice-mcp
MCP server for the LookTwice API: email, EU VAT, IBAN, and domain validation plus evidence-backed CPSC recall screening from any MCP client.
Documentation
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-mcpSetup
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
Frequently asked questions
What is looktwice-mcp?
looktwice-mcp is MCP server for the LookTwice API: email, EU VAT, IBAN, and domain validation plus evidence-backed CPSC recall screening from any MCP client.
How do I install looktwice-mcp?
Open the GitHub repository and follow its README. Most MCP servers are added to your client's MCP config, then called by your agent.
Is looktwice-mcp open source?
Yes — it is hosted on GitHub at https://github.com/eason4kim-rocket/looktwice-mcp.
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