Dev.to vs Personality.fyi

Dev.to's API (built on the open-source Forem platform) exposes articles, users, comments and other community content as JSON, with most read endpoints open to the public and write/user-scoped endpoints requiring a key. A live GET against the real gateway, dev.to/api/articles, returned genuine article JSON while carrying Access-Control-Allow-Origin: *, resolving cors unknown -> yes; no key was required for this public read call, though write endpoints still require the documented API Key. Free for community use with no paid tier — pricingModel free.

Personality.fyi is a small, static-data JSON API for the 16 MBTI types and the OEJTS personality test's items and scoring, explicitly marketed as "Free · No auth · No LLM." A live GET against the real gateway, personality.fyi/api/v1/types, returned a genuine list of the 16 MBTI types while carrying Access-Control-Allow-Origin: *, reconfirming both cors yes and auth None — no base-field corrections were needed. CC0 public-domain data with no paid tier — pricingModel free.