USAspending API

Government & Science

Comprehensive open data on US federal spending, awards, contracts, and agency budgets.

USAspending API is listed in Government & Science.

Auth No auth Pricing Free URL https://www.usaspending.gov/ Docs https://api.usaspending.gov/

Key metrics

Fair use Rate limit Free and keyless; no hard published rate limit (fair use).

Gotchas

No gotchas documented yet. Contribute one if you know a constraint we missed.

Labels

No auth

No auth

Callable with no API key or login — lowest-friction to integrate.

spending budget government finance transparency

Open docs ← All Government & Science