1Lookup

1Lookup MCP Server

First-party hosted/remote MCP connector with OAuth 2.1 auth (authorization code + PKCE, dynamic client registration, single `lookup` scope) exposing 5 tools (validate_phone, verify_email, ip_lookup, bulk_verify, get_account) for Claude, Cursor, ChatGPT, and any MCP client. Tool calls bill against the same plan credits as the REST API.

GitHub

Documentation

📖
Documentation
https://www.1lookup.io/products/mcp

Other Resources

🔗
MCPServer
https://app.1lookup.io/api/mcp
🔗
MCPServer
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/mcp/1lookup-mcp.yml
🔗
ToolCrosswalk
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/mcp/1lookup-tool-crosswalk.yml
🔗
OAuthScopes
https://raw.githubusercontent.com/api-evangelist/1lookup/refs/heads/main/scopes/1lookup-scopes.yml
🔗
WellKnown
https://www.1lookup.io/.well-known/mcp/server-card.json

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Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

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API entry from apis.yml

apis.yml Raw ↑ 
name: 1Lookup MCP Server
description: First-party hosted/remote MCP connector with OAuth 2.1 auth (authorization code + PKCE, dynamic
  client registration, single `lookup` scope) exposing 5 tools (validate_phone, verify_email, ip_lookup,
  bulk_verify, get_account) for Claude, Cursor, ChatGPT, and any MCP client. Tool calls bill against the
  same plan credits as the REST API.
humanURL: https://www.1lookup.io/products/mcp
baseURL: https://app.1lookup.io/api/mcp
tags:
- MCP / agent-native
- Phone Validation
- Email Validation
- IP Intelligence
tags_raw:
- MCP / agent-native
- phone validation
- email validation
- IP intelligence
properties:
- type: MCPServer
  url: https://app.1lookup.io/api/mcp
- type: MCPServer
  url: mcp/1lookup-mcp.yml
- type: ToolCrosswalk
  url: mcp/1lookup-tool-crosswalk.yml
- type: Documentation
  url: https://www.1lookup.io/products/mcp
- type: OAuthScopes
  url: scopes/1lookup-scopes.yml
- type: WellKnown
  url: https://www.1lookup.io/.well-known/mcp/server-card.json