---
title: "LookValid: Data validation API, free tools"
url: "https://meralume.com/brands/lookvalid.md"
canonical_url: "https://meralume.com/brands/lookvalid"
last_updated: "2026-10-24"
type: "product"
summary: "Validate and enrich emails, phone numbers, IP addresses, and domains with one API key and one credit balance."
related: ["https://meralume.com/index.md"]
---

# LookValid: Data validation API, free tools

Validate and enrich emails, phone numbers, IP addresses, and domains with one API key and one credit balance.

## What you get

- **One key, one balance.** Validate emails, phones, IPs and domains with a single API key, and draw every lookup from one credit balance.
- **Free tools and open docs.** Run the free tools with no account, read the docs before you pay, and see the named source behind each answer.
- **Built for agents too.** The same lookups are tools on an MCP server, so an AI agent calls them the way your own code does.

Visit [LookValid](https://lookvalid.com) to see it in action.

Questions about LookValid go to hello@lookvalid.com. Meralume Labs also answers at hello@meralume.com.

## Related

- [Meralume Labs: software for sales, marketing and operations](https://meralume.com/index.md)