National Institutes of Health

The National Institutes of Health (NIH), a part of the U.S. Department of Health and Human Services, is the nation's medical research agency making important discoveries that improve health and save lives. NIH operates the RePORTER API for exposing data about NIH-funded research projects and the publications associated with them.

National Institutes of Health publishes 2 API contracts indexed on the APIs.io network: Projects API and Publications API. Tagged areas include Federal Government, Health, Research, Funding, and Publications.

The National Institutes of Health catalog on APIs.io includes 1 Spectral governance ruleset.

National Institutes of Health’s developer surface includes developer portal and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

24.8/100 emerging ▬ flat Agent 15/100 agent aware Heartbeat 35/100 slowing Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract

Federal Government Health Research Funding Publications

What this lets a business do 1

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

Research & Scholarship Management

BC-4780

ProjectsPublications

POST /v2/publications/search POST /v2/projects/search

Kin Score

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

Composite quality — 24.8/100 · emerging

Contract Quality 9.2 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 1.3 / 17

Operational Transparency 1.2 / 11

Contract Governance 1.4 / 10

Discoverability 5.6 / 9

Regulatory Posture 0.7 / 15

Agent readiness — 15/100 · 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 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 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 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Health 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)
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)
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

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 7.9 — up to +18.4 composite points
Developer Ergonomics scores 19.0 — up to +16.2 composite points
Contract Quality scores 43.5 — up to +14.1 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/national-institutes-of-health/apis.yml: open an issue on github.com/api-evangelist/national-institutes-of-health 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
Life Sciences (Biotech and Pharma R&D)	standard	34.5 (thin)	-	-
US Federal API Programs (api.data.gov, Login.gov, GSA MAS, FedRAMP)	standard	34.5 (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 2

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

National Institutes of Health Projects API

The Projects API from National Institutes of Health — 1 operation(s) for projects.

National Institutes of Health Publications API

The Publications API from National Institutes of Health — 1 operation(s) for publications.

Open Collections 3

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

NIH RePORTER Projects API

OPEN COLLECTION

NIH RePORTER Projects Publications API

OPEN COLLECTION

NIH RePORTER API

OPEN COLLECTION

National Institutes of Health API pricing

Not yet checked against National Institutes of Health'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 National Institutes of Health's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

National Institutes Of Health Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

National Institutes Of Health 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.

National Institutes of Health

SLA

FinOps 1

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

National Institutes Of Health Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

National Institutes of Health API Rules

38 rules · 36 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

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

National Institutes Of Health Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

National Institutes Of Health Agentic Access

2 operations

2 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

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

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: national-institutes-of-health
name: National Institutes of Health
description: The National Institutes of Health (NIH), a part of the U.S. Department of Health and Human Services, is the nation's
  medical research agency making important discoveries that improve health and save lives. NIH operates the RePORTER API for
  exposing data about NIH-funded research projects and the publications associated with them.
type: Index
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/national-institutes-of-health.png
url: https://raw.githubusercontent.com/api-evangelist/national-institutes-of-health/refs/heads/main/apis.yml
created: '2024-12-03'
modified: '2026-05-19'
specificationVersion: '0.23'
x-docs-platform: swagger-ui
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
tags:
- Federal Government
- Health
- Research
- Funding
- Publications
tags_raw:
- Federal Government
- Health
- Research
- Funding
- Publications
- Federal-Government
apis:
- aid: national-institutes-of-health:national-institutes-of-health-projects-api
  name: National Institutes of Health Projects API
  description: The Projects API from National Institutes of Health — 1 operation(s) for projects.
  humanURL: https://api.reporter.nih.gov
  baseURL: https://api.reporter.nih.gov
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/national-institutes-of-health-projects-api-openapi.yml
  - type: Documentation
    url: https://api.reporter.nih.gov
  - type: Portal
    url: https://reporter.nih.gov/
- aid: national-institutes-of-health:national-institutes-of-health-publications-api
  name: National Institutes of Health Publications API
  description: The Publications API from National Institutes of Health — 1 operation(s) for publications.
  humanURL: https://api.reporter.nih.gov
  baseURL: https://api.reporter.nih.gov
  tags:
  - Publications
  properties:
  - type: OpenAPI
    url: openapi/national-institutes-of-health-publications-api-openapi.yml
  - type: Documentation
    url: https://api.reporter.nih.gov
  - type: Portal
    url: https://reporter.nih.gov/
common:
- type: Plans
  url: plans/national-institutes-of-health-plans-pricing.yml
- type: RateLimits
  url: rate-limits/national-institutes-of-health-rate-limits.yml
- type: FinOps
  url: finops/national-institutes-of-health-finops.yml
- type: CapabilityMap
  url: capabilities/national-institutes-of-health-capability-edges.yml
  name: National Institutes of Health Business Capability Map
- type: AgenticAccess
  url: agentic-access/national-institutes-of-health-agentic-access.yml
- type: DomainSecurity
  url: security/national-institutes-of-health-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/NIHGOV
- type: LinkedIn
  url: https://www.linkedin.com/company/national-institutes-of-health
- type: Website
  url: https://www.nih.gov/
- type: Portal
  url: https://api.reporter.nih.gov/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

National Institutes of Health API — frequently asked questions

Does National Institutes of Health have an API?

Yes. APIs.io lists 2 APIs from National Institutes of Health, including National Institutes of Health Projects API and National Institutes of Health Publications API.

Is there an OpenAPI specification for the National Institutes of Health API?

Yes. APIs.io indexes 2 OpenAPI specifications for National Institutes of Health, each linked for download from this page.

How much does the National Institutes of Health API cost?

APIs.io lists 3 pricing plans for National Institutes of Health, with each plan's price, limits and inclusions under Pricing on this page.

Is the National Institutes of Health API ready for AI agents?

National Institutes of Health has a Kin Score of 24.8 out of 100 (emerging) and an Agent Readiness score of 15.4 (agent-aware), scored by API Evangelist on 2026-11-06.

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
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.

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