ContactLint

com.contactlint/contactlintVersion 1.1.0

Validate emails (MX, disposable, role, typo) and phone numbers, singly or in batches, for AI agents.

Status

Responds139 msNov 14, 2026, 13:52 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 13:52 UTC
Latency: 139 ms
Remotes responding: 1 of 1
Sign-in: API key
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://contactlint.com/mcpResponds139 msNov 14, 2026, 13:52 UTC

No sign-in

Claude Code

claude mcp add --transport http contactlint https://contactlint.com/mcp --header 'Authorization: Bearer <YOUR_TOKEN>'

Replace <YOUR_TOKEN> before running.

Claude Desktop and claude.ai

Settings > Connectors > Add custom connector
Name: contactlint
Remote MCP server URL: https://contactlint.com/mcp
This server expects the header Authorization.

Cursor

{
  "mcpServers": {
    "contactlint": {
      "url": "https://contactlint.com/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_TOKEN>"
      }
    }
  }
}

Replace <YOUR_TOKEN> before running.

VS Code

code --add-mcp '{"name":"contactlint","type":"http","url":"https://contactlint.com/mcp","headers":{"Authorization":"Bearer <YOUR_TOKEN>"}}'

Replace <YOUR_TOKEN> before running.

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Tools

3 tools

Tools of ContactLint
	Description		Read-only	Idempotent	Open world
`validate_email`Check an email address: syntax, MX/A records via DNS-over-HTTPS, disposable domain, role address, free provider, typo suggestion for major providers. No SMTP probing. The result carries suggested_action (accept, suggest_correction with did_you_mean, review, reject) plus verdict and reason. Works without a key for a trial of 20 checks per day per network; with a key, uses 1 check.	Check an email address: syntax, MX/A records via DNS-over-HTTPS, disposable domain, role address, free provider, typo suggestion for major providers. No SMTP probing. The result carries suggested_action (accept, suggest_correction with did_you_mean, review, reject) plus verdict and reason. Works without a key for a trial of 20 checks per day per network; with a key, uses 1 check.	Not declared	Not declared	Not declared	Not declared
`validate_emails`Check a list of up to 50 email addresses in one call, with the same checks as validate_email. Returns one result per address in the same order plus a summary of verdicts. Uses 1 check per address; addresses whose DNS lookup fails come back with reason dns_error and are not billed. If the key lacks checks for the whole list, nothing is checked or billed.	Check a list of up to 50 email addresses in one call, with the same checks as validate_email. Returns one result per address in the same order plus a summary of verdicts. Uses 1 check per address; addresses whose DNS lookup fails come back with reason dns_error and are not billed. If the key lacks checks for the whole list, nothing is checked or billed.	Not declared	Not declared	Not declared	Not declared
`validate_phone`Parse and validate a phone number: valid, possible, type, region, E.164 and national formats, plus suggested_action (accept, review, reject). Does not check whether the line is in service. Works without a key for a trial of 20 checks per day per network; with a key, uses 1 check.	Parse and validate a phone number: valid, possible, type, region, E.164 and national formats, plus suggested_action (accept, review, reject). Does not check whether the line is in service. Works without a key for a trial of 20 checks per day per network; with a key, uses 1 check.	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Oct 18, 2026
Updated: Oct 18, 2026
Website: https://contactlint.com/⁠ (opens in a new tab)
Repository: https://github.com/zksyncer/contactlint⁠ (opens in a new tab)
Categories (suggested): CommunicationSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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