Armadin

Armadin is an AI-native cybersecurity company building the "Ultimate Attacker" — an autonomous, agentic offensive security platform that continuously identifies, proves, and prioritizes exploitable risk across enterprise attack surfaces. Founded in 2025 and launched publicly in March 2026, Armadin is headquartered in San Francisco and was co-founded by Kevin Mandia (founder of Mandiant, former FireEye CEO) alongside former Mandiant and Google Cloud Security leaders. The company pairs agentic AI "attacker swarms" with elite human red teamers to deliver continuous, 24/7 red teaming and prioritized remediation, framed as a response to AI-driven machine-speed "Hyperattacks." Armadin raised $189.9M in combined Seed and Series A funding led by Accel, with Google Ventures, Kleiner Perkins, Menlo Ventures, 8VC, Ballistic Ventures, and In-Q-Tel participating. It is currently a security services and platform company with no public developer API surface.

Armadin is profiled on the APIs.io network. Tagged areas include Company, Security, Cybersecurity, Offensive Security, and Red Teaming.

Armadin’s developer surface includes developer portal, engineering blog, support, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
10.2/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
0 APIs
CompanySecurityCybersecurityOffensive SecurityRed TeamingArtificial IntelligenceAgentic AIPenetration TestingAttack Surface Management

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 10.2/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 2.9 / 20
Access Clarity 1.6 / 20
Operational Transparency 0.0 / 13
Contract Governance 0.0 / 12
Discoverability 5.7 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 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 0 / 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
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
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/armadin: 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 →

Security Posture 2

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

Armadin Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Armadin Trust Center

trust center published

SECURITY

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

LLMsTxt
LLMsTxt

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 TrustCenter
TrustCenter

Operate 1

Status, limits, changes, and where to get help

Support
Support

Company 4

The organization behind the API

Website
Website
 Blog
Blog
 LinkedIn
LinkedIn
 About
About

Other 1

Properties that don't map to a standard resource type

Resources
Resources

Source (apis.yml)

apis.yml Raw ↑ 
aid: armadin
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
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/armadin.png
name: Armadin
description: Armadin is an AI-native cybersecurity company building the "Ultimate Attacker" — an autonomous, agentic offensive
  security platform that continuously identifies, proves, and prioritizes exploitable risk across enterprise attack surfaces.
  Founded in 2025 and launched publicly in March 2026, Armadin is headquartered in San Francisco and was co-founded by Kevin
  Mandia (founder of Mandiant, former FireEye CEO) alongside former Mandiant and Google Cloud Security leaders. The company
  pairs agentic AI "attacker swarms" with elite human red teamers to deliver continuous, 24/7 red teaming and prioritized
  remediation, framed as a response to AI-driven machine-speed "Hyperattacks." Armadin raised $189.9M in combined Seed and
  Series A funding led by Accel, with Google Ventures, Kleiner Perkins, Menlo Ventures, 8VC, Ballistic Ventures, and In-Q-Tel
  participating. It is currently a security services and platform company with no public developer API surface.
url: https://raw.githubusercontent.com/api-evangelist/armadin/refs/heads/main/apis.yml
x-type: company
x-source: kleiner-perkins-portfolio
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Security
- Cybersecurity
- Offensive Security
- Red Teaming
- Artificial Intelligence
- Agentic AI
- Penetration Testing
- Attack Surface Management
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/armadin-domain-security.yml
- type: Website
  url: https://www.armadin.com
- type: Portal
  url: https://www.armadin.com
- type: Blog
  url: https://www.armadin.com/blog-posts
- type: TrustCenter
  url: https://trust.armadin.com/
- type: Support
  url: https://www.armadin.com/contact
- type: LinkedIn
  url: https://www.linkedin.com/company/armadin
- type: LLMsTxt
  url: llms/armadin-llms.txt
- type: About
  url: https://www.armadin.com/company
- type: Resources
  url: https://www.armadin.com/resources
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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