About

The U.S. Data is a unified, fast explorer for public United States government data APIs — from FEC campaign finance to USGS earthquakes, the Federal Register, Treasury, SEC EDGAR, and more. It is built and maintained by Jason Todd Wade of BackTier.

What it does

• Browse all supported agencies in one place.
• Run live queries against each agency’s public API.
• Inspect rate limits, errors, and response headers.
• Link directly to source datasets for download.