Public Sector

USAspending.gov API

The USAspending API, maintained by the U.S. Department of the Treasury, provides public access to comprehensive U.S. government spending data including federal contracts, grants, loans, direct payments, agency and geographic breakdowns, and account-level information such as employee compensation. The API helps federal agencies meet their DATA Act reporting obligations. Currently version 2; v1 endpoints are deprecated. No API key required for read access.

Documentation GitHub

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/usaspendinggov-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

name: USAspending.gov API
description: The USAspending API, maintained by the U.S. Department of the Treasury, provides public access
  to comprehensive U.S. government spending data including federal contracts, grants, loans, direct payments,
  agency and geographic breakdowns, and account-level information such as employee compensation. The API
  helps federal agencies meet their DATA Act reporting obligations. Currently version 2; v1 endpoints
  are deprecated. No API key required for read access.
humanURL: https://www.usaspending.gov
baseURL: https://api.usaspending.gov/api/v2/
tags:
- Federal
- Treasury
- Spending
- Contracts
- Grants
- DATA Act
properties:
- type: Portal
  url: https://www.usaspending.gov
- type: Documentation
  url: https://api.usaspending.gov/docs/
- type: GitHubOrganization
  url: https://github.com/fedspendingtransparency
- type: GitHubRepository
  url: https://github.com/fedspendingtransparency/usaspending-api