curl -H 'API-Key' https://subdomains.jsmon.sh/api/...
The world's largest subdomain intelligence API. Sign up, get an API key, and start querying any domain — for free. Built for bug bounty hunters, red teams, and security researchers. One GET request. Every subdomain ever observed.
Radar by Jsmon is a free security reconnaissance tool built for bug bounty hunters, pentesters, and security researchers.
Enter any domain or URL and instantly get:
- HTTP & security headers
- JavaScript files & hidden endpoints
- Secrets & API key exposure
- WAF / Firewall detection
- DNS records, WHOIS & IP info
- 20+ recon parameters
No login. No signup. No rate limit gating.
Built by a top-15 HackerOne India bug bounty hunter — for the community, free forever.
