10 Free Government APIs Verified Keyless and Live as of July 2026

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A developer verified ten public-sector and intergovernmental APIs on July 6, 2026, confirming each returns valid JSON without requiring an API key, signup, or payment. The list spans federal spending, the US national debt, drug safety, clinical trials, biodiversity, and real-time earthquake data. The verification exposed a key reliability trap: two widely used non-government alternatives — REST Countries and a US Census endpoint — returned HTTP 200 status codes while delivering failed or empty responses, a silent error standard status checks miss. The author notes these primary-source government endpoints differ from commercial APIs in that they do not deprecate endpoints to drive new pricing tiers, though keyless access does not guarantee response accuracy. Each API was tested with a single curl request, and the findings are drawn from that one-day snapshot rather than long-term production monitoring.

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