US Army

The US Army is the largest branch of the United States military and is responsible for conducting ground combat operations. Its mission is to defend the nation and support humanitarian, peacekeeping, and training missions worldwide. The Army maintains a public API at api.army.mil providing access to news articles, events, and official content using OpenAPI 3 specification.

US Army publishes 4 API contracts indexed on the APIs.io network, including Articles API, Events API, News API, and 1 more. Tagged areas include Army, Federal Government, Military, Defense, and Open Data.

The US Army catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

📡 Profile data on GitHub

25.5/100 emerging ▬ flat Agent 23/100 agent aware Heartbeat 88/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract

ArmyFederal Government Military Defense Open Data News

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 25.5/100 · emerging

Contract Quality 11.3 / 21

Developer Ergonomics 1.6 / 17

Access Clarity 1.3 / 17

Operational Transparency 1.5 / 11

Contract Governance 1.4 / 10

Discoverability 4.9 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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 4 / 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 5 / 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

7 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 9.5 — up to +18.1 composite points
Contract Quality scores 53.4 — up to +11.7 composite points

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.

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/us-army/apis.yml: open an issue on github.com/api-evangelist/us-army 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
US Federal API Programs (api.data.gov, Login.gov, GSA MAS, FedRAMP)	undeclared	-	-	-

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 4

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

US Army Open Data

The US Army provides open data resources through data.gov and maintains open source projects through the US Army Research Laboratory GitHub organization. Army data includes geos...

US Army Articles API

The Articles API from US Army — 2 operation(s) for articles.

US Army Events API

The Events API from US Army — 1 operation(s) for events.

US Army News API

The News API from US Army — 1 operation(s) for news.

Open Collections 4

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

US Army Public Articles API

OPEN COLLECTION

US Army Public Articles Events API

OPEN COLLECTION

US Army Public Articles News API

OPEN COLLECTION

US Army Public API

OPEN COLLECTION

US Army API pricing

Not yet checked against US Army's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against US Army's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Us Army Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Us Army Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

US Army

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Us Army Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Us Army Context

20 classes · 7 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

US Army — jsonschema rules

5 rules · 3 warnings 2 info

SPECTRAL

US Army — public rules

7 rules · 2 errors 4 warnings 1 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

US Army Article

11 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Us Army Article Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Us Army Public Get Article By Id Example

2 fields

EXAMPLE

Security Posture 1

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

Us Army Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Us Army Agentic Access

4 operations

4 operations · 0 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 1

The organization behind the API

LinkedIn

Source (apis.yml)

aid: us-army
url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/apis.yml
common:
- type: Plans
  url: plans/us-army-plans-pricing.yml
- type: RateLimits
  url: rate-limits/us-army-rate-limits.yml
- type: FinOps
  url: finops/us-army-finops.yml
- type: AgenticAccess
  url: agentic-access/us-army-agentic-access.yml
- type: DomainSecurity
  url: security/us-army-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/us-army
apis:
- aid: us-army:us-army-open-data
  name: US Army Open Data
  tags:
  - Army
  - Federal Government
  - Open Data
  - Military
  tags_raw:
  - Army
  - Federal Government
  - Open Data
  - Military
  - Federal-Government
  humanURL: https://www.army.mil/
  properties:
  - url: https://www.army.mil/
    type: Documentation
  - url: https://catalog.data.gov/dataset?publisher=US+Army
    type: DataGov
  - url: https://github.com/USArmyResearchLab
    type: GitHubOrg
  description: The US Army provides open data resources through data.gov and maintains open source projects through the US
    Army Research Laboratory GitHub organization. Army data includes geospatial datasets, research publications, and public
    information resources.
- aid: us-army:us-army-articles-api
  name: US Army Articles API
  description: The Articles API from US Army — 2 operation(s) for articles.
  humanURL: https://api.army.mil/
  baseURL: https://api.army.mil/api/v1
  tags:
  - Articles
  properties:
  - type: OpenAPI
    url: openapi/us-army-articles-api-openapi.yml
  - type: Documentation
    url: https://api.army.mil/
  - type: SwaggerUI
    url: https://api.army.mil/
  - type: SpectralRuleset
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/rules/us-army-public-rules.yml
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/json-schema/us-army-article-schema.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/json-ld/us-army-context.jsonld
- aid: us-army:us-army-events-api
  name: US Army Events API
  description: The Events API from US Army — 1 operation(s) for events.
  humanURL: https://api.army.mil/
  baseURL: https://api.army.mil/api/v1
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/us-army-events-api-openapi.yml
  - type: Documentation
    url: https://api.army.mil/
  - type: SwaggerUI
    url: https://api.army.mil/
  - type: SpectralRuleset
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/rules/us-army-public-rules.yml
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/json-schema/us-army-article-schema.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/json-ld/us-army-context.jsonld
- aid: us-army:us-army-news-api
  name: US Army News API
  description: The News API from US Army — 1 operation(s) for news.
  humanURL: https://api.army.mil/
  baseURL: https://api.army.mil/api/v1
  tags:
  - News
  properties:
  - type: OpenAPI
    url: openapi/us-army-news-api-openapi.yml
  - type: Documentation
    url: https://api.army.mil/
  - type: SwaggerUI
    url: https://api.army.mil/
  - type: SpectralRuleset
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/rules/us-army-public-rules.yml
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/json-schema/us-army-article-schema.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/us-army/refs/heads/main/json-ld/us-army-context.jsonld
name: US Army
tags:
- Army
- Federal Government
- Military
- Defense
- Open Data
- News
tags_raw:
- Army
- Federal Government
- Military
- Defense
- Open Data
- News
- Federal-Government
kind: contract
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: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/us-army.png
access: 3rd-Party
created: '2024-11-21'
modified: '2026-05-19'
position: Consuming
description: The US Army is the largest branch of the United States military and is responsible for conducting ground combat
  operations. Its mission is to defend the nation and support humanitarian, peacekeeping, and training missions worldwide.
  The Army maintains a public API at api.army.mil providing access to news articles, events, and official content using OpenAPI
  3 specification.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'

US Army API — frequently asked questions

Does US Army have an API?

Yes. APIs.io lists 4 APIs from US Army, including US Army Open Data, US Army Articles API and US Army Events API, and 1 more.

Is there an OpenAPI specification for the US Army API?

Yes. APIs.io indexes 3 OpenAPI specifications for US Army, each linked for download from this page.

How much does the US Army API cost?

APIs.io lists 3 pricing plans for US Army, with each plan's price, limits and inclusions under Pricing on this page.

Is the US Army API ready for AI agents?

US Army has a Kin Score of 25.5 out of 100 (emerging) and an Agent Readiness score of 22.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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