aid: antigen
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/antigen.png
name: Antigen
description: Antigen is an AI-powered continuous offensive security platform for the enterprise.
  It deploys autonomous AI penetration-testing agents against production systems every night,
  maps and exploits the full attack surface, and pairs the automated testing with a monthly
  human red-team assessment. Findings ship with reproduction steps and remediation guidance
  delivered directly into engineering tools such as GitHub and Linear. Antigen serves financial
  services, healthcare, retail, and government sectors, and is a Y Combinator (Fall 2025)
  company backed by Lightspeed, DST Global, and Susa Ventures.
url: https://raw.githubusercontent.com/api-evangelist/antigen/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Security
- Cybersecurity
- Penetration Testing
- Offensive Security
- Red Team
- Artificial Intelligence
- Vulnerability Management
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/antigen-domain-security.yml
- type: Website
  url: https://antigen.sh/
- type: Login
  url: https://platform.antigen.sh/
- type: Blog
  url: https://antigen.sh/research
- type: Support
  url: https://antigen.sh/demo
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence