Legion Security

Legion Security is a browser-native AI SOC analyst that learns a security team's real workflows from inside the browser and then helps execute and automate them in phases: Learning Mode captures and maps how analysts actually work, Guided Mode runs those workflows with a human in the loop, and Autonomous Mode takes over the steps the team has signed off on. The platform targets alert triage, investigation, and evidence gathering in the security operations center, positioning agentic AI as a dependable teammate rather than a black box, with every captured insight visible and every action explainable. Legion Security operates a SafeBase trust center and publishes SOC 2 Type 2, ISO/IEC 27001:2022, ISO/IEC 42001:2023, HIPAA, and CSA STAR Level 1 compliance documentation. The company is seed-stage and backed by Accel; it publishes no public developer API at this time.

Legion Security is profiled on the APIs.io network. Tagged areas include Company, Cloud Saas, Security, Security Operations, and Cybersecurity.

Legion Security’s developer surface includes engineering blog, support, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

13.1/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Cloud Saas Security Security Operations Cybersecurity Artificial Intelligence AI Agents SOC Threat Detection Incident Response

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 13.1/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.4 / 20

Access Clarity 5.3 / 20

Operational Transparency 0.7 / 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/legion: 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 3

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

Legion Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Legion Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Legion Trust Center

SOC 2 Type 2, ISO/IEC 27001:2022, ISO/IEC 42001:2023, HIPAA, CSA STAR Level 1

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Access & Security 6

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

Compliance

Security

SecurityTxt

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 6

The organization behind the API

Website

About

Blog

Careers

Twitter

LinkedIn

Source (apis.yml)

aid: legion
name: Legion Security
description: 'Legion Security is a browser-native AI SOC analyst that learns a security team''s real workflows from inside
  the browser and then helps execute and automate them in phases: Learning Mode captures and maps how analysts actually work,
  Guided Mode runs those workflows with a human in the loop, and Autonomous Mode takes over the steps the team has signed
  off on. The platform targets alert triage, investigation, and evidence gathering in the security operations center, positioning
  agentic AI as a dependable teammate rather than a black box, with every captured insight visible and every action explainable.
  Legion Security operates a SafeBase trust center and publishes SOC 2 Type 2, ISO/IEC 27001:2022, ISO/IEC 42001:2023, HIPAA,
  and CSA STAR Level 1 compliance documentation. The company is seed-stage and backed by Accel; it publishes no public developer
  API at this time.'
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://cdn.prod.website-files.com/686e7e1928c1cbf8955ee16a/6889fa496b0b9878ee99712b_og.jpg
url: https://raw.githubusercontent.com/api-evangelist/legion/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
x-tier: profile
x-tier-reason: no-public-api
x-slug-collision: 'Three unrelated companies named "Legion" appear across the VC portfolio feeds and were collapsed into this
  single slug. This repo profiles Accel''s Legion Security (https://www.legionsecurity.ai/, autonomous SOC), which matches
  the Website already committed here. The other two need their own slugs: Bloomberg Beta''s Legion Intelligence (https://www.legionintel.com/,
  agentic AI for national security) and Norwest''s Legion Technologies (https://legion.co/, workforce management). The x-backed-by
  list has been narrowed to accel accordingly.'
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Cloud Saas
- Security
- Security Operations
- Cybersecurity
- Artificial Intelligence
- AI Agents
- SOC
- Threat Detection
- Incident Response
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: TrustCenter
  url: security/legion-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/legion-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/legion-domain-security.yml
- type: Website
  url: https://www.legionsecurity.ai/
- type: About
  url: https://www.legionsecurity.ai/about
- type: Blog
  url: https://www.legionsecurity.ai/resources
- type: Support
  url: https://www.legionsecurity.ai/contact
- type: PrivacyPolicy
  url: https://www.legionsecurity.ai/privacy
- type: Compliance
  url: https://trust.legionsecurity.ai/
- type: Security
  url: https://www.legionsecurity.ai/.well-known/security.txt
- type: SecurityTxt
  url: well-known/legion-security.txt
- type: WellKnown
  url: well-known/legion-well-known.yml
- type: LLMsTxt
  url: llms/legion-llms.txt
- type: Careers
  url: https://careers.legionsecurity.ai/
- type: Twitter
  url: https://x.com/LegionSecAI
- type: LinkedIn
  url: https://www.linkedin.com/company/legion-security-ai/
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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