Looktwice MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 20 installs a week from npm. Last commit 15 Aug 2026.
Email, EU VAT, IBAN, and domain validation plus evidence-backed U.S. CPSC recall screening.
Today is the operative word: we check Looktwice MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add looktwice-mcp -- npx -y looktwice-mcp
{
"mcpServers": {
"looktwice-mcp": {
"args": [
"-y",
"looktwice-mcp"
],
"command": "npx"
}
}
}
[mcp_servers.looktwice-mcp]
command = "npx"
args = ["-y", "looktwice-mcp"]
{
"mcpServers": {
"looktwice-mcp": {
"args": [
"-y",
"looktwice-mcp"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"looktwice-mcp": {
"args": [
"-y",
"looktwice-mcp"
],
"command": "npx"
}
}
}
This one needs environment variables set before it will start:
LOOKTWICE_API_KEY (LookTwice API key; create one at https://looktwice.dev/dashboard), LOOKTWICE_BASE_URL (Override the API base URL (defaults to https://api.looktwice.dev)).
The author declared them in the registry entry; get the values from the project itself.
Regex matching, email/URL format validation, and JSON Schema validation.
Email validation for Claude and any MCP client — verdicts with evidence and bulk jobs.
Real-time single and bulk email validation (syntax, MX, 5,000+ disposable domains, SMTP).
Validation suite: EU VAT (VIES), IBAN mod-97, email (MX+disposable), geo place lookup, VIN decode.
Validates domain email MX records and DNS status via Cloudflare DNS-over-HTTPS.
Fast email validation at the edge: syntax, MX records, disposable-domain detection.
An MCP server that provides tools to validate an email address using Dilli Email Validation API.
Validate email addresses by format, MX record, and disposable domain. No key required.
Answers built from our own checks of this server.