SAM.gov

SAM.gov Federal Hierarchy Public API

The Federal Hierarchy Public API allows non-federal users to retrieve Federal Organization details down to the office level. Used to look up agency and organizational hierarchy for federal procurement purposes.

GitHub

Documentation

📖
Documentation
https://open.gsa.gov/api/fh-public-api/

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/federal-hierarchy-public-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: sam.gov:federal-hierarchy-public-api
name: SAM.gov Federal Hierarchy Public API
description: The Federal Hierarchy Public API allows non-federal users to retrieve Federal Organization
  details down to the office level. Used to look up agency and organizational hierarchy for federal procurement
  purposes.
humanURL: https://open.gsa.gov/api/fh-public-api/
tags:
- Federal Hierarchy
- Government Organization
- Government
properties:
- type: Documentation
  url: https://open.gsa.gov/api/fh-public-api/