Cybersecurity and Infrastructure Security Agency website screenshot

Cybersecurity and Infrastructure Security Agency

The Cybersecurity and Infrastructure Security Agency (CISA) is the United States federal civilian cybersecurity agency, part of the Department of Homeland Security. CISA reduces cybersecurity and physical security risk for the nation, coordinates federal civilian cyber defense, and partners with state, local, tribal, and territorial governments and the private sector. CISA publishes a number of public, unauthenticated machine-readable feeds, including the Known Exploited Vulnerabilities (KEV) catalog (mandatorily remediated by federal civilian agencies under Binding Operational Directive 22-01), Cybersecurity Advisories, and Common Security Advisory Framework (CSAF) advisories. CISA also operates an Automated Indicator Sharing (AIS) TAXII 2.1 server that delivers STIX cyber threat indicators to vetted partners under a Terms of Use and Interconnection Agreement.

Cybersecurity and Infrastructure Security Agency publishes 2 APIs on the APIs.io network: KEV API and Schema API. Tagged areas include Advisories, AIS, Binding Operational Directive, CSAF, and CVE.

The Cybersecurity and Infrastructure Security Agency catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Cybersecurity and Infrastructure Security Agency’s developer surface includes engineering blog and 19 more developer resources.

40.8/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
4 APIs
AdvisoriesAISBinding Operational DirectiveCSAFCVECWECybersecurityFederal GovernmentGovernmentICS-CERTInformation SharingKEVKnown Exploited VulnerabilitiesRisk ManagementSecuritySTIXTAXIIThreat IntelligenceVulnerability Management

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 40.8/100 · thin
Contract Quality 15.7 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 4.8 / 13
Governance 3.8 / 12
Discoverability 6.5 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
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/cybersecurity-and-infrastructure-security-agency: 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 4

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

CISA Automated Indicator Sharing (AIS) TAXII Server

CISA's Automated Indicator Sharing (AIS) program uses a TAXII 2.1 server to deliver STIX-formatted cyber threat indicators (CTI) and defensive measures (DM) to vetted partners. ...

CISA Cybersecurity Advisories

CISA publishes Cybersecurity Advisories (CSAs), Industrial Control Systems Advisories (ICSAs), and Common Security Advisory Framework (CSAF) JSON documents describing tactics, t...

Cybersecurity and Infrastructure Security Agency KEV API

Known Exploited Vulnerabilities catalog feed

Open Collections 1

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

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

FinOps 1

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

Semantic Vocabularies 1

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

Cisa Context

18 classes · 0 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Cybersecurity and Infrastructure Security Agency API Rules

5 rules · 2 errors 3 warnings

SPECTRAL

Cybersecurity and Infrastructure Security Agency API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

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

KevVulnerability

11 properties

JSON SCHEMA

Security Posture 2

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

Cybersecurity And Infrastructure Security Agency Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Cybersecurity And Infrastructure Security Agency Agentic Access

3 operations

3 operations · 0 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 1

Pricing, plans, and the legal terms of use

Company 4

The organization behind the API

Other 5

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: cybersecurity-and-infrastructure-security-agency
name: Cybersecurity and Infrastructure Security Agency
kind: government
description: The Cybersecurity and Infrastructure Security Agency (CISA) is the United States federal civilian cybersecurity
  agency, part of the Department of Homeland Security. CISA reduces cybersecurity and physical security risk for the nation,
  coordinates federal civilian cyber defense, and partners with state, local, tribal, and territorial governments and the
  private sector. CISA publishes a number of public, unauthenticated machine-readable feeds, including the Known Exploited
  Vulnerabilities (KEV) catalog (mandatorily remediated by federal civilian agencies under Binding Operational Directive 22-01),
  Cybersecurity Advisories, and Common Security Advisory Framework (CSAF) advisories. CISA also operates an Automated Indicator
  Sharing (AIS) TAXII 2.1 server that delivers STIX cyber threat indicators to vetted partners under a Terms of Use and Interconnection
  Agreement.
url: https://raw.githubusercontent.com/api-evangelist/cybersecurity-and-infrastructure-security-agency/refs/heads/main/apis.yml
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cybersecurity-and-infrastructure-security-agency.png
type: Index
access: 3rd-Party
position: Consuming
created: '2024-12-03'
modified: '2026-05-19'
specificationVersion: '0.20'
tags:
- Advisories
- AIS
- Binding Operational Directive
- CSAF
- CVE
- CWE
- Cybersecurity
- Federal Government
- Government
- ICS-CERT
- Information Sharing
- KEV
- Known Exploited Vulnerabilities
- Risk Management
- Security
- STIX
- TAXII
- Threat Intelligence
- Vulnerability Management
apis:
- aid: cybersecurity-and-infrastructure-security-agency:ais
  name: CISA Automated Indicator Sharing (AIS) TAXII Server
  description: CISA's Automated Indicator Sharing (AIS) program uses a TAXII 2.1 server to deliver STIX-formatted cyber threat
    indicators (CTI) and defensive measures (DM) to vetted partners. AIS includes AIS PUBLIC, FEDGOV, and CISCP feed communities.
    Connection requires a static IP, a Terms of Use, and an Interconnection Agreement; commercial data aggregators also redistribute
    AIS content to subscribers.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.cisa.gov/topics/cyber-threats-and-advisories/information-sharing/automated-indicator-sharing-ais
  tags:
  - AIS
  - Information Sharing
  - STIX
  - TAXII
  - Threat Intelligence
  properties:
  - type: Documentation
    url: https://www.cisa.gov/topics/cyber-threats-and-advisories/information-sharing/automated-indicator-sharing-ais
  - type: ConnectionGuide
    url: https://www.cisa.gov/resources-tools/resources/automated-indicator-sharing-ais-taxii-server-connection-guide
  - type: TAXIIDocumentation
    url: https://www.cisa.gov/automated-indicator-sharing-ais-20-documents-more-information
- aid: cybersecurity-and-infrastructure-security-agency:advisories
  name: CISA Cybersecurity Advisories
  description: CISA publishes Cybersecurity Advisories (CSAs), Industrial Control Systems Advisories (ICSAs), and Common Security
    Advisory Framework (CSAF) JSON documents describing tactics, techniques, indicators, and required mitigations for active
    threats. Advisories are browsable on cisa.gov and many are exported as machine-readable CSAF JSON.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.cisa.gov/news-events/cybersecurity-advisories
  tags:
  - Advisories
  - CSAF
  - ICS-CERT
  - Threat Intelligence
  properties:
  - type: Documentation
    url: https://www.cisa.gov/news-events/cybersecurity-advisories
  - type: ICSAdvisories
    url: https://www.cisa.gov/news-events/ics-advisories
  - type: CSAF
    url: https://www.cisa.gov/news-events/cybersecurity-advisories/csaf
- aid: cybersecurity-and-infrastructure-security-agency:cybersecurity-and-infrastructure-security-agency-kev-api
  name: Cybersecurity and Infrastructure Security Agency KEV API
  description: Known Exploited Vulnerabilities catalog feed
  humanURL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
  baseURL: https://www.cisa.gov
  tags:
  - KEV
  properties:
  - type: OpenAPI
    url: openapi/cybersecurity-and-infrastructure-security-agency-kev-api-openapi.yml
  - type: Documentation
    url: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
  - type: JSONFeed
    url: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
  - type: CSVFeed
    url: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.csv
  - type: JSONSchema
    url: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities_schema.json
  - type: GitHubMirror
    url: https://github.com/cisagov/kev-data
  - type: Capabilities
    url: capabilities/cisa-kev-capabilities.yml
  - type: Rules
    url: rules/cisa-kev-rules.yml
- aid: cybersecurity-and-infrastructure-security-agency:cybersecurity-and-infrastructure-security-agency-schema-api
  name: Cybersecurity and Infrastructure Security Agency Schema API
  description: JSON Schema for the KEV catalog
  humanURL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
  baseURL: https://www.cisa.gov
  tags:
  - Schema
  properties:
  - type: OpenAPI
    url: openapi/cybersecurity-and-infrastructure-security-agency-schema-api-openapi.yml
  - type: Documentation
    url: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
  - type: JSONFeed
    url: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
  - type: CSVFeed
    url: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.csv
  - type: JSONSchema
    url: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities_schema.json
  - type: GitHubMirror
    url: https://github.com/cisagov/kev-data
  - type: Capabilities
    url: capabilities/cisa-kev-capabilities.yml
  - type: Rules
    url: rules/cisa-kev-rules.yml
common:
- type: AgenticAccess
  url: agentic-access/cybersecurity-and-infrastructure-security-agency-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/cybersecurity-and-infrastructure-security-agency-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/cybersecurity-and-infrastructure-security-agency-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/cisagov
- type: Website
  url: https://www.cisa.gov
- type: KEVCatalog
  url: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- type: Advisories
  url: https://www.cisa.gov/news-events/cybersecurity-advisories
- type: Topics
  url: https://www.cisa.gov/topics
- type: ResourcesAndTools
  url: https://www.cisa.gov/resources-tools
- type: NewsAndEvents
  url: https://www.cisa.gov/news-events
- type: GitHubOrganization
  url: https://github.com/cisagov
- type: KEVDataMirror
  url: https://github.com/cisagov/kev-data
- type: ContactUs
  url: https://www.cisa.gov/about/contact-us
- type: PrivacyPolicy
  url: https://www.cisa.gov/privacy-policy
- type: JSONLD
  url: json-ld/cisa-context.jsonld
- type: JSONSchema
  url: json-schema/cisa-kev-vulnerability-schema.json
- type: Vocabulary
  url: vocabulary/cisa-vocabulary.yml
- type: Capabilities
  url: capabilities/cisa-kev-capabilities.yml
- type: Rules
  url: rules/cisa-kev-rules.yml
- url: https://www.cisa.gov/cybersecurity-advisories/all.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com