Medium vs Personality.fyi

Medium's REST API lets a registered integration read a user's profile and publish posts on their behalf, gated behind an OAuth-issued integration token (Medium stopped issuing new integration tokens in 2023, but existing tokens still authenticate). A live GET against the real gateway, api.medium.com/v1/me, returned a genuine 401 "An access token is required" JSON error while carrying Access-Control-Allow-Origin: *, resolving cors unknown -> yes and reconfirming OAuth auth in the same probe. No paid tier ever existed for the API itself — 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.