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 6 APIs on the APIs.io network, including Cves API, CVE History API, National Institute of Standards and Technology CPE API, and 3 more. Tagged areas include Cybersecurity, Government, Measurements, Research, and Scientific Data.

National Institute of Standards and Technology (NIST)’s developer surface includes authentication, engineering blog, developer portal, documentation, and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub

28.3/100 thin ▬ flat Agent 23/100 agent aware Front door AI 3/6 light Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

1 APIs

Cybersecurity Government Measurements Research Scientific Data Standards

What this lets a business do 1

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

Cybersecurity Management

BC-620

CvehistoryCves

GET /cves/2.0 GET /cvehistory/2.0

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 28.3/100 · thin

Contract Quality 10.0 / 21

Developer Ergonomics 5.7 / 17

Access Clarity 2.2 / 17

Operational Transparency 1.5 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 1.8 / 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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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/.

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 github.com/api-evangelist/nist: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 6

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) Cves API

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

National Institute of Standards and Technology (NIST) CVE History API

The CVE History API from National Institute of Standards and Technology (NIST) — 1 operation(s) for cve history.

National Institute of Standards and Technology CPE API

Common Platform Enumeration

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

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

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 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

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
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:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  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: '2026-09-16'
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-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/vulnerabilities
  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
- aid: nist:nist-cve-history-api
  name: National Institute of Standards and Technology (NIST) CVE History API
  description: The CVE History API from National Institute of Standards and Technology (NIST) — 1 operation(s) for cve history.
  humanURL: https://nvd.nist.gov/developers/vulnerabilities
  baseURL: https://services.nvd.nist.gov/rest/json
  tags:
  - CVE History
  properties:
  - type: OpenAPI
    url: openapi/nist-cve-history-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:national-institute-of-standards-and-technology-cpe-api
  name: National Institute of Standards and Technology CPE API
  description: Common Platform Enumeration
  humanURL: https://nvd.nist.gov/developers
  baseURL: https://services.nvd.nist.gov
  tags:
  - CPE
  properties:
  - type: OpenAPI
    url: openapi/national-institute-of-standards-and-technology-cpe-api-openapi.yml
  - type: Documentation
    url: https://nvd.nist.gov/developers
  - type: Documentation
    url: https://nvd.nist.gov/developers/vulnerabilities
  - type: Documentation
    url: https://nvd.nist.gov/developers/products
common:
- type: Website
  url: https://nist.gov
- 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
- type: GitHubOrganization
  url: https://github.com/usnistgov
- type: Portal
  url: https://nvd.nist.gov/developers
- type: Documentation
  url: https://nvd.nist.gov/developers/vulnerabilities
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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