# SAM.gov API documentation Official SAM.gov API documentation lives on open.gsa.gov, one page per API. The pages share one rate-limit table, but parameter names and defaults differ between APIs and some pages contradict themselves. Federal Hierarchy docs disagree on status defaults, offset meaning and parameter names. Subaward docs differ on the /prod path and leave limit and offset undocumented.Checked on 2026-11-12.Official source: [open.gsa.gov](https://open.gsa.gov/api/) | Host | open.gsa.gov | | --- | --- | | APIs covered | Entity, Opportunities, Exclusions, Contract Awards, Extracts, Hierarchy, Subawards | ## Official pages | API | Documentation | | --- | --- | | Entity Management | [open.gsa.gov/api/entity-api](https://open.gsa.gov/api/entity-api/) | | Get Opportunities | [open.gsa.gov/api/get-opportunities-public-api](https://open.gsa.gov/api/get-opportunities-public-api/) | | Exclusions | [open.gsa.gov/api/exclusions-api](https://open.gsa.gov/api/exclusions-api/) | | Contract Awards | [open.gsa.gov/api/contract-awards](https://open.gsa.gov/api/contract-awards/) | | Entity Extracts | [open.gsa.gov/api/sam-entity-extracts-api](https://open.gsa.gov/api/sam-entity-extracts-api/) | | Federal Hierarchy | [open.gsa.gov/api/fh-public-api](https://open.gsa.gov/api/fh-public-api/) | | Subaward Reporting | [open.gsa.gov/api/acquisition-subaward-reporting-api](https://open.gsa.gov/api/acquisition-subaward-reporting-api/) | ## Known contradictions - Federal Hierarchy docs disagree on status defaults, offset meaning and parameter names. - Subaward docs differ on the /prod path and leave limit and offset undocumented. ## Related - [SAM.gov API](https://samgovapi.io/sam-gov-api) - [SAM.gov API rate limits](https://samgovapi.io/sam-gov-api-rate-limits) - [Docs](https://samgovapi.io/docs)Updated 2026-11-12. Sources checked 2026-11-12.Independent. Not affiliated with, endorsed by or sponsored by GSA, SAM.gov or any U.S. government agency. Registering in SAM.gov is free at sam.gov.

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