USAspending.gov

USAspending.gov is the official open data source of federal spending information operated by the U.S. Department of the Treasury's Bureau of the Fiscal Service, implementing the DATA Act's transparency mandate. The underlying USAspending API (api.usaspending.gov) is a free, public, unauthenticated REST API that exposes federal contracts, grants, loans, direct payments, and other financial assistance awards, along with agency budgets, federal account and Treasury Account Symbol data, recipient profiles, and COVID-19 / disaster emergency relief spending. Most search and listing endpoints accept a POST with a JSON filter object rather than query parameters, given the complexity of the filter combinations; simpler lookup endpoints use GET with path parameters. The API and the usaspending-api server are open source.

USAspending.gov publishes 9 APIs on the APIs.io network, including Agency API, Awards Search API, Budget Functions API, and 6 more. Tagged areas include Government, Federal Spending, Open Data, Contracts, and Grants.

USAspending.gov’s developer surface includes documentation and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub
25.7/100 emerging ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
9 APIs
GovernmentFederal SpendingOpen DataContractsGrantsDATA ActTransparencyPublic Sector

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 25.7/100 · emerging
Contract Quality 14.3 / 25
Developer Ergonomics 1.7 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 25/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/usaspending: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

USAspending.gov Agency API

Per-agency profile, budget, and award data.

USAspending.gov Awards Search API

Advanced search and filtering across award and subaward spending.

USAspending.gov Budget Functions API

Federal budget functional classification reference data.

USAspending.gov Bulk Download API

Asynchronous bulk CSV/TSV/text export of filtered spending data.

USAspending.gov Disaster API

Disaster and emergency (including COVID-19) supplemental funding data.

USAspending.gov Federal Accounts API

Federal account and Treasury Account Symbol (TAS) data.

USAspending.gov Recipient API

Recipient (awardee) profile and search data.

USAspending.gov References API

Reference and typeahead/autocomplete lookup data.

USAspending.gov Subawards API

Subaward (pass-through award) listings scoped to a prime award.

Scroll for all 9

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

USAspending API

OPEN COLLECTION

Rate Limits 1

Documented rate limits and quota policies.

Usaspending Rate Limits

3 limits

RATE LIMITS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Usaspending Domain Security

TLSv1.2 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Usaspending Agentic Access

14 operations · 6 acting

14 operations · 6 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: usaspending
url: https://raw.githubusercontent.com/api-evangelist/usaspending/refs/heads/main/apis.yml
name: USAspending.gov
kind: government
description: USAspending.gov is the official open data source of federal spending information operated by the U.S. Department
  of the Treasury's Bureau of the Fiscal Service, implementing the DATA Act's transparency mandate. The underlying USAspending
  API (api.usaspending.gov) is a free, public, unauthenticated REST API that exposes federal contracts, grants, loans, direct
  payments, and other financial assistance awards, along with agency budgets, federal account and Treasury Account Symbol
  data, recipient profiles, and COVID-19 / disaster emergency relief spending. Most search and listing endpoints accept a
  POST with a JSON filter object rather than query parameters, given the complexity of the filter combinations; simpler lookup
  endpoints use GET with path parameters. The API and the usaspending-api server are open source.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/usaspending.png
tags:
- Government
- Federal Spending
- Open Data
- Contracts
- Grants
- DATA Act
- Transparency
- Public Sector
created: '2026-07-03'
modified: '2026-07-03'
specificationVersion: '0.19'
apis:
- aid: usaspending:usaspending-agency-api
  name: USAspending.gov Agency API
  description: Per-agency profile, budget, and award data.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - Agency
  properties:
  - type: OpenAPI
    url: openapi/usaspending-agency-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
- aid: usaspending:usaspending-awards-search-api
  name: USAspending.gov Awards Search API
  description: Advanced search and filtering across award and subaward spending.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - Awards Search
  properties:
  - type: OpenAPI
    url: openapi/usaspending-awards-search-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
- aid: usaspending:usaspending-budget-functions-api
  name: USAspending.gov Budget Functions API
  description: Federal budget functional classification reference data.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - Budget Functions
  properties:
  - type: OpenAPI
    url: openapi/usaspending-budget-functions-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
- aid: usaspending:usaspending-bulk-download-api
  name: USAspending.gov Bulk Download API
  description: Asynchronous bulk CSV/TSV/text export of filtered spending data.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - Bulk Download
  properties:
  - type: OpenAPI
    url: openapi/usaspending-bulk-download-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
- aid: usaspending:usaspending-disaster-api
  name: USAspending.gov Disaster API
  description: Disaster and emergency (including COVID-19) supplemental funding data.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - Disaster
  properties:
  - type: OpenAPI
    url: openapi/usaspending-disaster-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
- aid: usaspending:usaspending-federal-accounts-api
  name: USAspending.gov Federal Accounts API
  description: Federal account and Treasury Account Symbol (TAS) data.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - Federal Accounts
  properties:
  - type: OpenAPI
    url: openapi/usaspending-federal-accounts-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
- aid: usaspending:usaspending-recipient-api
  name: USAspending.gov Recipient API
  description: Recipient (awardee) profile and search data.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - Recipient
  properties:
  - type: OpenAPI
    url: openapi/usaspending-recipient-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
- aid: usaspending:usaspending-references-api
  name: USAspending.gov References API
  description: Reference and typeahead/autocomplete lookup data.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - References
  properties:
  - type: OpenAPI
    url: openapi/usaspending-references-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
- aid: usaspending:usaspending-subawards-api
  name: USAspending.gov Subawards API
  description: Subaward (pass-through award) listings scoped to a prime award.
  humanURL: https://api.usaspending.gov/docs/endpoints
  baseURL: https://api.usaspending.gov/api/v2
  tags:
  - Subawards
  properties:
  - type: OpenAPI
    url: openapi/usaspending-subawards-api-openapi.yml
  - type: Documentation
    url: https://api.usaspending.gov/docs/endpoints
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/agency/toptier_code.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/recipient.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/federal_accounts/account_number.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/budget_functions/list_budget_functions.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/disaster/overview.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/bulk_download/awards.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/references/toptier_agencies.md
  - type: APIReference
    url: https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/subawards.md
common:
- type: AgenticAccess
  url: agentic-access/usaspending-agentic-access.yml
- type: DomainSecurity
  url: security/usaspending-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/fedspendingtransparency
- type: Website
  url: https://www.usaspending.gov
- type: Documentation
  url: https://api.usaspending.gov/docs/endpoints
- type: RateLimits
  url: rate-limits/usaspending-rate-limits.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com