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 10 API contracts indexed on the APIs.io network, including Agency API, Awards Search API, Budget Functions API, and 7 more. Tagged areas include Government, Federal Spending, Open Data, Contracts, and Grants.

The USAspending.gov catalog on APIs.io includes 1 Spectral governance ruleset.

USAspending.gov’s developer surface includes engineering blog, documentation, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

22.2/100 emerging ▬ flat Agent 19/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract

Government Federal Spending Open Data Contracts GrantsDATA ActTransparency Public Sector Government Data

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Public Finance & Budget Management

BC-3280

Agency

GET /agency/{toptier_code}/

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 22.2/100 · emerging

Contract Quality 8.5 / 19

Developer Ergonomics 2.9 / 15

Access Clarity 0.0 / 15

Operational Transparency 1.2 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 0.0 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 19/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 0.0 — up to +20.0 composite points Ask about this →
Developer Ergonomics scores 19.0 — up to +16.2 composite points Ask about this →
Contract Quality scores 45.4 — up to +13.7 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/usaspending/apis.yml: open an issue on github.com/api-evangelist/usaspending to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Open Data Portals (CKAN / DCAT)	standard	17.2 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 10

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.

USAspending.gov

US federal spending data

Scroll for all 10

Open Collections 10

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

USAspending Agency API

OPEN COLLECTION

USAspending Agency Awards Search API

OPEN COLLECTION

USAspending Agency Budget Functions API

OPEN COLLECTION

USAspending Agency Bulk Download API

OPEN COLLECTION

USAspending Agency Disaster API

OPEN COLLECTION

USAspending Agency Federal Accounts API

OPEN COLLECTION

USAspending Agency Recipient API

OPEN COLLECTION

USAspending Agency References API

OPEN COLLECTION

USAspending Agency Subawards API

OPEN COLLECTION

USAspending API

OPEN COLLECTION

Scroll for all 10

USAspending.gov API pricing

Rate limits

General API Requests: not published requests
Bulk Download Requests: not published (community guidance suggests 1-2 concurrent) concurrent download jobs
Search Result Window: varies by endpoint (recipient list caps at 1000 per page) rows per page

Compiled by API Evangelist, not yet checked against USAspending.gov's documentation. Rate-limit details →

Rate Limits 1

Documented rate limits and quota policies.

USAspending.gov Rate Limits

3 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

USAspending.gov API Rules

60 rules · 58 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 1

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

USAspending.gov Domain Security

TLSv1.2 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

USAspending.gov Agentic Access

14 operations · 3 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 3

The organization behind the API

Blog

Blog

Website

Website

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

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.
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-13'
  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
- Government Data
created: '2026-07-03'
modified: '2026-10-06'
specificationVersion: '0.23'
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
- name: USAspending.gov
  description: US federal spending data
  humanURL: https://api.usaspending.gov/
  baseURL: https://api.usaspending.gov/
  tags:
  - Government
  properties:
  - type: Documentation
    url: https://api.usaspending.gov/
common:
- url: https://www.usaspending.gov/blog/
  type: Blog
- type: CapabilityMap
  url: capabilities/usaspending-capability-edges.yml
  name: USAspending.gov Business Capability Map
- 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
- type: Website
  url: https://api.usaspending.gov/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

USAspending.gov API — frequently asked questions

Does USAspending.gov have an API?

Yes. APIs.io lists 10 APIs from USAspending.gov, including USAspending.gov Agency API, USAspending.gov Awards Search API and USAspending.gov Budget Functions API, and 7 more.

Is there an OpenAPI specification for the USAspending.gov API?

Yes. APIs.io indexes 9 OpenAPI specifications for USAspending.gov, each linked for download from this page.

Is the USAspending.gov API ready for AI agents?

USAspending.gov has a Kin Score of 22.2 out of 100 (emerging) and an Agent Readiness score of 19.0 (agent-aware), scored by API Evangelist on 2026-11-13.

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