Socrata Open Data API (Tyler Data and Insights)
Socrata Open Data API (SODA) is the read/write JSON API powering open data portals at federal, state, county, and city governments worldwide. Queries use SoQL (Socrata Query Language), responses are JSON/CSV/GeoJSON, and write operations require an OAuth token. App tokens (free, no auth) raise per-IP throttles. Socrata was acquired by Tyler Technologies in 2018 and now operates as the Data and Insights division — the same platform under new branding.