aid: gray-swan
name: Gray Swan
description: >-
  Gray Swan AI is an AI security company that helps enterprises deploy AI with
  confidence. Its Cygnal product is a real-time, drop-in secure proxy that
  fronts LLM providers (OpenAI, Anthropic, and Gemini request formats) with
  input/output filtering and threat monitoring for jailbreaks and prompt
  injection, governed by versioned enforcement Policies managed over a REST API.
  Gray Swan also operates Shade (an adversarial red-teaming platform), Arena (a
  global adversarial red-teaming network), and adversarial model evaluations
  that frontier AI labs run before shipping. The company is SOC 2 Type 2 and
  Cyber Essentials certified.
url: https://raw.githubusercontent.com/api-evangelist/gray-swan/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- wing-venture-capital
x-tier: enriched
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://cdn.prod.website-files.com/6614467b00e631b0f073e2b7/66886e33ca0b8f284d3b3b40_ca18847e7b3f6e2e7038dac7bd3846ce_Gray%20Swan%3DWhite%20Horizontal.svg
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Ai
- AI Security
- LLM Security
- Guardrails
- Red Teaming
- AI Governance
- Prompt Injection
- Model Safety
- API Security
apis:
- aid: gray-swan:gray-swan-activity-api
  name: Gray Swan Activity API
  description: The Activity API from Gray Swan — 1 operation(s) for activity.
  humanURL: https://docs.grayswan.ai/api-reference
  baseURL: https://api.grayswan.ai
  tags:
  - Activity
  properties:
  - type: OpenAPI
    url: openapi/gray-swan-activity-api-openapi.yml
  - type: Documentation
    url: https://docs.grayswan.ai/
  - type: APIReference
    url: https://docs.grayswan.ai/api-reference
- aid: gray-swan:gray-swan-cygnal-api
  name: Gray Swan Cygnal API
  description: The Cygnal API from Gray Swan — 7 operation(s) for cygnal.
  humanURL: https://docs.grayswan.ai/api-reference
  baseURL: https://api.grayswan.ai
  tags:
  - Cygnal
  properties:
  - type: OpenAPI
    url: openapi/gray-swan-cygnal-api-openapi.yml
  - type: Documentation
    url: https://docs.grayswan.ai/
  - type: APIReference
    url: https://docs.grayswan.ai/api-reference
- aid: gray-swan:gray-swan-policies-api
  name: Gray Swan Policies API
  description: The Policies API from Gray Swan — 8 operation(s) for policies.
  humanURL: https://docs.grayswan.ai/api-reference
  baseURL: https://api.grayswan.ai
  tags:
  - Policies
  properties:
  - type: OpenAPI
    url: openapi/gray-swan-policies-api-openapi.yml
  - type: Documentation
    url: https://docs.grayswan.ai/
  - type: APIReference
    url: https://docs.grayswan.ai/api-reference
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.grayswan.ai/
- type: DeveloperPortal
  url: https://docs.grayswan.ai/
- type: Documentation
  url: https://docs.grayswan.ai/
- type: APIReference
  url: https://docs.grayswan.ai/api-reference
- type: Quickstart
  url: https://docs.grayswan.ai/cygnal/creating-completions
- type: SignUp
  url: https://platform.grayswan.ai
- type: Blog
  url: https://www.grayswan.ai/blog
- type: GitHubOrganization
  url: https://github.com/GraySwanAI
- type: TermsOfService
  url: https://www.grayswan.ai/terms-of-service
- type: PrivacyPolicy
  url: https://www.grayswan.ai/privacy-policy
- type: Authentication
  url: authentication/gray-swan-authentication.yml
- type: ErrorCatalog
  url: errors/gray-swan-problem-types.yml
- type: RateLimits
  url: rate-limits/gray-swan-rate-limits.yml
- type: Conventions
  url: conventions/gray-swan-conventions.yml
- type: DataModel
  url: data-model/gray-swan-data-model.yml
- type: Lifecycle
  url: lifecycle/gray-swan-lifecycle.yml
- type: Conformance
  url: conformance/gray-swan-conformance.yml
- type: Compliance
  url: conformance/gray-swan-conformance.yml
- type: LLMsTxt
  url: llms/gray-swan-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: WellKnown
  url: well-known/gray-swan-well-known.yml
- type: SecurityTxt
  url: well-known/gray-swan-security.txt
- type: Security
  url: https://grayswan.ai/security
- type: VulnerabilityDisclosure
  url: security/gray-swan-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/gray-swan-domain-security.yml
- type: TrustCenter
  url: security/gray-swan-trust-center.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence