I Built a Free REST API for Developer Tools (JSON, Base64, JWT, UUID, and More)

Every developer needs a handful of utility tools: format some JSON, decode a JWT, generate a UUID, test a regex. Usually you'd open a browser tab, paste your data into some random website, and hope it's not logging your secrets. I built DevKits API — a free REST API that brings these tools to your code, your terminal, or your AI assistant. What's Available 12 endpoints covering the most common developer utility tasks: Endpoint What it does POST /api/json/format Format + validate JSON POST /api/base64/encode Encode to Base64 POST /api/base64/decode Decode from Base64 POST /api/jwt/decode Decode a JWT payload GET /api/uuid/generate Generate UUID v4 POST /api/hash/generate MD5/SHA-1/SHA-256/SHA-512 POST /api/regex/test Test a regex pattern POST /api/url/encode URL encode/decode POST /api/markdown/to-html Convert Markdown to HTML POST /api/diff/compare Text diff POST /api/cron/parse Human-readable cron schedule Quick Start # Generate a UUID curl https://api.aiforeverthing.com/api/uuid/gene