Free Privacy API: IP Lookup, Email Breach Check, VPN Detection (No Key)

~/sheets/free-privacy-api.md
A Free Privacy API You Can Use Right Now
Most privacy APIs charge money or require API keys. HackMyIP offers a completely free API with four endpoints, no authentication required. Perfect for developers building security tools, dashboards, or privacy-focused applications.
Endpoints
GET /api/ip — Your IP address with geolocation, ISP, VPN detection, and privacy score
GET /api/lookup?ip=8.8.8.8 — Look up any IP address
GET /api/breach?email=user@example.com — Check email against 500+ breach databases. Returns breach count, affected services, risk score, and password exposure analysis
GET /api/score — IP cleanliness grade (A-D), VPN/datacenter/residential detection
Quick Start
No signup needed. Just make an HTTP request:
curl https://hackmyip.com/api/ip
Or in JavaScript:
const data = await fetch('https://hackmyip.com/api/breach?email=test@example.com').then(r => r.json());
Why It Is Free
HackMyIP runs on Cloudflare Workers with near-zero operating costs. There is no infrastructure to pay for, so the API can remain free. CORS is enabled, so you can call it from any website or application.
Use Cases
Check if user emails have been compromised during registration
Build internal security dashboards
Add IP geolocation to your app without paying for an API
Detect if incoming traffic is from VPNs or datacenters
Create privacy monitoring tools
npm Package
For JavaScript developers, install the official client: npm install hackmyip. Full documentation and source code available on GitHub.
API Documentation
Full endpoint documentation with examples in cURL, JavaScript, and Python is available at hackmyip.com/api. An OpenAPI 3.1 specification is available at /.well-known/openapi.json for automatic client generation.
Last updated: April 2026