National Institute of Standards and Technology (NIST) website screenshot

National Institute of Standards and Technology (NIST)

APIs provided by the National Institute of Standards and Technology for accessing scientific and technical data, standards, and research information including vulnerability databases, chemistry data, and time services.

National Institute of Standards and Technology (NIST) publishes 2 APIs on the APIs.io network: Cvehistory API and Cves API. Tagged areas include Cybersecurity, Government, Measurements, Research, and Scientific Data.

National Institute of Standards and Technology (NIST)’s developer surface includes authentication, engineering blog, and 2 more developer resources.

🌐 Visit website 📡 Source on GitHub
27.1/100 thin ▬ flat Agent 35/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessSelf serve
5 APIs
CybersecurityGovernmentMeasurementsResearchScientific DataStandards

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 27.1/100 · thin
Contract Quality 11.9 / 21
Developer Ergonomics 2.4 / 17
Access Clarity 2.2 / 17
Operational Transparency 0.9 / 11
Contract Governance 0.0 / 10
Discoverability 5.5 / 9
Regulatory Posture 3.3 / 15
Agent readiness — 35/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 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
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.
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/.
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/nist: 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 5

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

NIST Chemistry WebBook API

Access to chemical and physical property data for thousands of chemical species.

NIST Data Gateway

Provides access to NIST's scientific and technical databases across multiple domains.

NIST Time API

Provides access to official NIST time services for time synchronization.

National Institute of Standards and Technology (NIST) Cvehistory API

The Cvehistory API from National Institute of Standards and Technology (NIST) — 1 operation(s) for cvehistory.

National Institute of Standards and Technology (NIST) Cves API

The Cves API from National Institute of Standards and Technology (NIST) — 1 operation(s) for cves.

Open Collections 4

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

API Collection

OPEN COLLECTION

NIST NVD CVE Cvehistory API

OPEN COLLECTION

NIST NVD CVE Cvehistory Cves API

OPEN COLLECTION

NIST NVD CVE API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Nist Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nist Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Nist Finops

FINOPS

Security Posture 2

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

Nist Authentication

apiKey · 1 scheme

SECURITY

Nist Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Nist Agentic Access

2 operations

2 operations · 0 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Company 1

The organization behind the API

Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: nist
name: National Institute of Standards and Technology (NIST)
description: APIs provided by the National Institute of Standards and Technology for accessing scientific and technical data,
  standards, and research information including vulnerability databases, chemistry data, and time services.
type: Index
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nist.png
tags:
- Cybersecurity
- Government
- Measurements
- Research
- Scientific Data
- Standards
url: https://raw.githubusercontent.com/api-evangelist/nist/refs/heads/main/apis.yml
created: '2024-01-01'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: nist:nist-chemistry-webbook-api
  name: NIST Chemistry WebBook API
  description: Access to chemical and physical property data for thousands of chemical species.
  humanURL: https://webbook.nist.gov/chemistry/
  baseURL: https://webbook.nist.gov/cgi
  tags:
  - Chemistry
  - Physical Properties
  - Scientific Data
  properties:
  - type: Documentation
    url: https://webbook.nist.gov/chemistry/form-ser/
- aid: nist:nist-data-gateway
  name: NIST Data Gateway
  description: Provides access to NIST's scientific and technical databases across multiple domains.
  humanURL: https://data.nist.gov
  baseURL: https://data.nist.gov
  tags:
  - Open Data
  - Research Data
  - Scientific Data
  properties:
  - type: Documentation
    url: https://data.nist.gov/sdp/#/
- aid: nist:nist-time-api
  name: NIST Time API
  description: Provides access to official NIST time services for time synchronization.
  humanURL: https://www.nist.gov/pml/time-and-frequency-division/time-distribution/internet-time-service-its
  tags:
  - Standards
  - Synchronization
  - Time
  properties:
  - type: Documentation
    url: https://tf.nist.gov/tf-cgi/servers.cgi
- aid: nist:nist-cvehistory-api
  name: National Institute of Standards and Technology (NIST) Cvehistory API
  description: The Cvehistory API from National Institute of Standards and Technology (NIST) — 1 operation(s) for cvehistory.
  humanURL: https://nvd.nist.gov/developers
  baseURL: https://services.nvd.nist.gov/rest/json
  tags:
  - CVE History
  tags_raw:
  - Cvehistory
  properties:
  - type: OpenAPI
    url: openapi/nist-cvehistory-api-openapi.yml
  - type: Documentation
    url: https://nvd.nist.gov/developers/vulnerabilities
  - type: Authentication
    url: https://nvd.nist.gov/developers/request-an-api-key
- aid: nist:nist-cves-api
  name: National Institute of Standards and Technology (NIST) Cves API
  description: The Cves API from National Institute of Standards and Technology (NIST) — 1 operation(s) for cves.
  humanURL: https://nvd.nist.gov/developers
  baseURL: https://services.nvd.nist.gov/rest/json
  tags:
  - CVEs
  tags_raw:
  - Cves
  properties:
  - type: OpenAPI
    url: openapi/nist-cves-api-openapi.yml
  - type: Documentation
    url: https://nvd.nist.gov/developers/vulnerabilities
  - type: Authentication
    url: https://nvd.nist.gov/developers/request-an-api-key
common:
- type: AgenticAccess
  url: agentic-access/nist-agentic-access.yml
- type: DomainSecurity
  url: security/nist-domain-security.yml
- type: Authentication
  url: authentication/nist-authentication.yml
- url: https://www.nist.gov/news-events/news/rss.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com