Running a homelab? Here are some free tools you can self-host alongside your stack:
1. Webhook Inspector — catch & debug any HTTP callback
curl -X POST http://69.62.106.38:3101/h/mytest -d '{"event":"deploy"}'
curl http://69.62.106.38:3101/h/mytest/requests
2. Developer API — 18 endpoints (hash, encode, UUID, IP lookup...)
curl "https://mating-liable-folk-fabulous.trycloudflare.com/api/free/ip"
3. JSON Formatter — paste & validate JSON
http://69.62.106.38:3107
All single-binary Node.js apps. Works on any VPS, Pi, or NAS.