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.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles USAspending.gov the way a machine reads it — 24 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — USAspending.gov scores 24.9/100 (emerging), with a separate agent-readiness read of 20/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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title="USAspending.gov on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/usaspending.svg"
alt="USAspending.gov Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/usaspending/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/usaspending/"
title="USAspending.gov on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/usaspending/card.svg"
alt="USAspending.gov Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
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How we profile USAspending.gov
Each block below is one kind of artifact we hold for USAspending.gov. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 10
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 10 ·
Open Collections 11
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONUSAspending Agency API
OPEN COLLECTIONUSAspending Agency Awards Search API
OPEN COLLECTIONUSAspending Agency Budget Functions API
OPEN COLLECTIONUSAspending Agency Bulk Download API
OPEN COLLECTIONUSAspending Agency Disaster API
OPEN COLLECTIONUSAspending Agency Federal Accounts API
OPEN COLLECTIONUSAspending Agency Recipient API
OPEN COLLECTIONUSAspending Agency References API
OPEN COLLECTIONUSAspending Agency Subawards API
OPEN COLLECTIONUSAspending API
OPEN COLLECTIONScroll within the panel for all 11 ·
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Usaspending Rate Limits
RATE LIMITSSecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for USAspending.gov — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/usaspending · machine-readable index on apis.io
This is an independent, third-party profile of USAspending.gov, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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