# 1Lookup [Health: Active]

**Category:** 💻 Developer Tools  
**Repository:** https://www.1lookup.io/products/mcp  
**Views:** 1  
**Installs:** 0  
**Upvotes:** 0  
**Directory Page:** https://allmcps.com/mcp/1lookup

## Description
Verify phone numbers, emails and IPs, and check remaining plan credits.

## Claude Desktop Quick Installation
Remote MCP endpoint (confidence: medium). Install path inferred — verify against the README before running it. Add as a URL/SSE server in your client:

```json
"mcpServers": {
  "1lookup": {
    "url": "https://www.1lookup.io/products/mcp"
  }
}
```

## Documentation

## What 1Lookup MCP server does

The 1Lookup MCP server exposes four listed capabilities for agent use: phone-number verification, email-address verification, IP-address verification, and checking remaining plan credits. Its scope is focused on validating contact and network identifiers while allowing an agent to inspect available account capacity.

The service may fit workflows where an AI client needs to assess whether a phone number, email address, or IP address can be checked through 1Lookup. Credit visibility is useful for workflows that need to determine whether verification work can continue, although the available material does not describe the returned fields or any credit thresholds.

## How it works

An MCP-compatible client can use the server’s exposed operations to submit a phone number, email address, or IP address for verification, or request the account’s remaining plan credits. The available description identifies these operations but does not specify the transport, request parameters, response format, authentication method, or error behavior.

The 1Lookup MCP server should therefore be evaluated against the client and deployment details of the intended environment before implementation. The listing confirms the functional scope, but not whether results are returned as structured fields, text, or another format.

## Tools and capabilities

The listed capabilities are:

- Verify phone numbers.
- Verify email addresses.
- Verify IP addresses.
- Check remaining plan credits.

These capabilities support basic identity and network-data verification workflows. The material does not identify additional tools for enrichment, lookup history, bulk processing, account management, or other operations, so those should not be assumed.

## Limitations and notes

The provided material contains no README or implementation documentation. It does not state which MCP clients are supported, how the server is installed, which environment variables are required, or whether it uses standard input/output, HTTP, or another transport. It also does not describe rate limits, pricing, verification criteria, privacy handling, regional coverage, or the exact meaning of a successful result.

The 1Lookup MCP server is best treated as a narrowly scoped interface for the four documented functions. Confirm setup instructions and output behavior from the product documentation before connecting it to production agents. In particular, verify how credentials are supplied and whether checking plan credits is required before each verification request.

Because the available description only names capabilities, no claims can be made here about verification accuracy, supported countries, data retention, client compatibility, or automated retry behavior.

_Full upstream README: https://allmcps.com/mcp/1lookup/readme_