Fiscal Data (U.S. Treasury)

fiscaldata.treasury.gov/api-documentation/Government finance data API (debt, revenue, spending, interest rates, exchange rates)data-apis/fiscal-data-treasuryJSON compare report an error provider JSON

Free allowance: Open API with no account and no token; no request rate or quota is stated; data free without restriction, in JSON, CSV or XML
Verdict: ★ qualifiesusable as stated; the read path was probed
Cost: free tier
Identity: anonymousno card, no phone
Binding limit: noneno named constraint binds
Evidence: documented5 sources; a first-party page was read and the sentence quoted
Freshness: stale on 2026-12-04checked 2026-11-03 (live); stale on 2026-12-04

Free tier	Open API with no account and no token; no request rate or quota is stated; data free without restriction, in JSON, CSV or XML unit unlimited; metered on none; Base https://api.fiscaldata.treasury.gov/services/api/fiscal_service; fields, filter, sort, format and page[number] and page[size] parameters apply. A keyless debt-to-the-penny call answered HTTP 200.
Price	none stated
Limits	request-rate no request rate stated source Bulk path: every dataset is available as a machine-readable file download on the website.
Binding	none No request count or rate is published.
Identity	anonymous The API is open and needs no user account or registration for a token; a keyless call answered HTTP 200.
Egress	not metered; no quota is stated
Per-object cap	not stated on the documentation page
Interface	rest GET https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v2/accounting/od/debt_to_penny with fields, filter, sort, format and paging parameters, no key endpoint: https://api.fiscaldata.treasury.gov/services/api/fiscal_service
Tooling	curl or any HTTP client; every dataset also downloads as a file from the website
Composes with	Keyless US federal debt, rates and exchange-rate tables; they pair with FRED series and the BLS data.
Reliability	No limit is published; a shared government service can throttle heavy callers.
Notes	Keyless with no stated rate. Bulk path: file downloads per dataset.
Evidence note	documented Access terms are read from the vendor pages and a keyless call answered 200; no rate was measured.
Parsed numbers	has-free-tier 1

Evidence 5

date	source	what it proved
2026-11-02	fiscaldata.treasury.gov/api-documentation/	the API needs no account or token registration
2026-11-02	fiscaldata.treasury.gov/api-documentation/	the data is free without restriction
2026-11-02	fiscaldata.treasury.gov/api-documentation/	part of the text of Interface, above
2026-11-02	fiscaldata.treasury.gov/about-us/	every dataset downloads in machine-readable formats
2026-11-03	probe: `https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v2/accounting/od/debt_to_penny?page%5Bsize%5D=1`	a keyless call answered HTTP 200

More fields 1

bulk path	file downloads of every dataset on the website

Unknown values 1

retention stated: the field does not apply to this kind of offer