Synack website screenshot

Synack

Synack is a crowdsourced security testing platform that pairs the Synack Red Team — a global community of vetted security researchers — with AI-enabled attack-surface discovery to deliver continuous penetration testing, vulnerability management, and compliance-grade assessments. The Synack Enterprise API exposes assessments, assets, asset discovery (seed groups and seeds), vulnerabilities and suspected vulnerabilities, missions and campaigns, tagging, tests, users, and streaming analytics across nine REST services, secured with OAuth2 scopes and JWT bearer tokens.

Synack publishes 22 APIs on the APIs.io network, including Assessment Groups API, Assessment Lifecycle API, Assessments API, and 19 more. Tagged areas include Company, Security, Penetration Testing, Vulnerability Management, and Attack Surface Management.

Synack’s developer surface includes documentation, API reference, getting-started guide, authentication, engineering blog, pricing, signup flow, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub
48.0/100 developing ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessSelf serve
9 APIs
CompanySecurityPenetration TestingVulnerability ManagementAttack Surface ManagementCrowdsourced SecurityCompliance

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 48.0/100 · developing
Contract Quality 13.4 / 23
Developer Ergonomics 10.6 / 18
Access Clarity 9.5 / 18
Operational Transparency 1.5 / 12
Contract Governance 0.5 / 11
Discoverability 7.3 / 9
Create-or-Update Ergonomics 1.1 / 10
Agent readiness — 26/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
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/synack: 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 →

APIs 22

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

Synack Assessment Groups API

Users assigned to an Assessment Group, with their roles.

Synack Assessment Lifecycle API

Lifecycle state transitions for an individual assessment.

Synack Assessments API

Assets are associated with listings.

Synack asset-relationships API

Relationships between assets.

Synack assetproviders API

The assetproviders API from Synack — 1 operation(s) for assetproviders.

Synack Assets API

Assets managed by Synack.

Synack Comments API

Operations related to comments

Synack credentials API

Credentials are restricted to authorized users.

Synack external-relationships API

The external-relationships API from Synack — 2 operation(s) for external-relationships.

Synack health API

The health API from Synack — 1 operation(s) for health.

Synack Hosts API

Host assets.

Synack Missions API

Access mission information.

Synack mobileapps API

Mobile application assets.

Synack Patch Verifications API

Operations related to patch verifications

Synack Seeds API

Collections of seeds associated with a listing.

Synack Suspected Vulnerabilities API

Operations related to suspected vulnerabilities

Synack Tags API

Tags applied to seeds and seed groups.

Synack Tests API

Operations related to security tests

Synack users API

Users of credentials.

Synack Vulnerabilities API

Operations related to security vulnerabilities

Synack Vulnerability Statuses API

Operations related to vulnerability statuses

Synack webapps API

Web application assets.

Scroll for all 22

Open Collections 29

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

API Collection

OPEN COLLECTION

Assessment Service Assessment Groups API

OPEN COLLECTION

Assessment Service Assessment Groups Assessment Lifecycle API

OPEN COLLECTION

Assessment Service Assessment Groups Assessments API

OPEN COLLECTION

Assessment Service Assessment Groups asset-relationships API

OPEN COLLECTION

Assessment Service Assessment Groups assetproviders API

OPEN COLLECTION

Assessment Service Assessment Groups Assets API

OPEN COLLECTION

Assessment Service Assessment Groups cloudaccounts API

OPEN COLLECTION

Assessment Service Assessment Groups Comments API

OPEN COLLECTION

Assessment Service Assessment Groups credentials API

OPEN COLLECTION

Assessment Service Assessment Groups external-relationships API

OPEN COLLECTION

Assessment Service Assessment Groups health API

OPEN COLLECTION

Assessment Service Assessment Groups Hosts API

OPEN COLLECTION

Assessment Service Assessment Groups Missions API

OPEN COLLECTION

Assessment Service Assessment Groups mobileapps API

OPEN COLLECTION

Assessment Service Assessment Groups networks API

OPEN COLLECTION

Assessment Service Assessment Groups Patch Verifications API

OPEN COLLECTION

Assessment Service Assessment Groups ports API

OPEN COLLECTION

Assessment Service Assessment Groups scoperules API

OPEN COLLECTION

Assessment Service Assessment Groups scripts API

OPEN COLLECTION

Assessment Service Assessment Groups Seeds API

OPEN COLLECTION

Assessment Service Assessment Groups Suspected Vulnerabilities API

OPEN COLLECTION

Assessment Service Assessment Groups Tags API

OPEN COLLECTION

Assessment Service Assessment Groups Tests API

OPEN COLLECTION

Assessment Service Assessment Groups userroles API

OPEN COLLECTION

Assessment Service Assessment Groups users API

OPEN COLLECTION

Assessment Service Assessment Groups Vulnerabilities API

OPEN COLLECTION

Assessment Service Assessment Groups Vulnerability Statuses API

OPEN COLLECTION

Assessment Service Assessment Groups webapps API

OPEN COLLECTION

Scroll for all 29

Security Posture 4

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

Synack Authentication

apiKey/http/oauth2 · 4 schemes

SECURITY

Synack Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Synack Vulnerability Disclosure

contact published

SECURITY

Synack Trust Center

ISO 27001:2022, FedRAMP Moderate, TX-RAMP Level 2, IASME Cyber Essentials, CREST, Privacy Shield

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Synack Scopes

21 scopes · implicit

21 scopes

SCOPES

Agentic Access 1

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

Synack Agentic Access

143 operations · 75 acting · 1 human-in-the-loop

143 operations · 75 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate
X-MCPServerCandidate
 AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog
ErrorCatalog
 Conventions
Conventions
 DataModel
DataModel
 Lifecycle
Lifecycle
 Conformance
Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 GitHubOrganization
GitHubOrganization

Access & Security 7

Authentication, authorization, and security posture

Authentication
Authentication
 OAuthScopes
OAuthScopes
 Compliance
Compliance
 TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security
 DomainSecurity
DomainSecurity

Scroll for all 7

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Blog
Blog
 Website
Website

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: synack
name: Synack
description: Synack is a crowdsourced security testing platform that pairs the Synack Red Team — a global community of vetted
  security researchers — with AI-enabled attack-surface discovery to deliver continuous penetration testing, vulnerability
  management, and compliance-grade assessments. The Synack Enterprise API exposes assessments, assets, asset discovery (seed
  groups and seeds), vulnerabilities and suspected vulnerabilities, missions and campaigns, tagging, tests, users, and streaming
  analytics across nine REST services, secured with OAuth2 scopes and JWT bearer tokens.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
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://www.synack.com/wp-content/uploads/2024/08/synack-meta-card-home-page-PTaaS-1.jpg
url: https://raw.githubusercontent.com/api-evangelist/synack/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- ggv-capital
- gv
- techstars
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Security
- Penetration Testing
- Vulnerability Management
- Attack Surface Management
- Crowdsourced Security
- Compliance
tags_raw:
- Company
- Security
- Penetration Testing
- Vulnerability Management
- Attack Surface Management
- Crowdsourced Security
- Compliance
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: synack:synack-assessment-groups-api
  name: Synack Assessment Groups API
  description: Users assigned to an Assessment Group, with their roles.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Assessment Groups
  properties:
  - type: OpenAPI
    url: openapi/synack-assessment-groups-api-openapi.yml
- aid: synack:synack-assessment-lifecycle-api
  name: Synack Assessment Lifecycle API
  description: Lifecycle state transitions for an individual assessment.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Assessment Lifecycle
  properties:
  - type: OpenAPI
    url: openapi/synack-assessment-lifecycle-api-openapi.yml
- aid: synack:synack-assessments-api
  name: Synack Assessments API
  description: Assets are associated with listings.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Assessments
  properties:
  - type: OpenAPI
    url: openapi/synack-assessments-api-openapi.yml
- aid: synack:synack-asset-relationships-api
  name: Synack asset-relationships API
  description: Relationships between assets.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - asset-relationships
  properties:
  - type: OpenAPI
    url: openapi/synack-asset-relationships-api-openapi.yml
- aid: synack:synack-assetproviders-api
  name: Synack assetproviders API
  description: The assetproviders API from Synack — 1 operation(s) for assetproviders.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - assetproviders
  properties:
  - type: OpenAPI
    url: openapi/synack-assetproviders-api-openapi.yml
- aid: synack:synack-assets-api
  name: Synack Assets API
  description: Assets managed by Synack.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Assets
  properties:
  - type: OpenAPI
    url: openapi/synack-assets-api-openapi.yml
- aid: synack:synack-comments-api
  name: Synack Comments API
  description: Operations related to comments
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Comments
  properties:
  - type: OpenAPI
    url: openapi/synack-comments-api-openapi.yml
- aid: synack:synack-credentials-api
  name: Synack credentials API
  description: Credentials are restricted to authorized users.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Credentials
  tags_raw:
  - credentials
  properties:
  - type: OpenAPI
    url: openapi/synack-credentials-api-openapi.yml
- aid: synack:synack-external-relationships-api
  name: Synack external-relationships API
  description: The external-relationships API from Synack — 2 operation(s) for external-relationships.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - external-relationships
  properties:
  - type: OpenAPI
    url: openapi/synack-external-relationships-api-openapi.yml
- aid: synack:synack-health-api
  name: Synack health API
  description: The health API from Synack — 1 operation(s) for health.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Health
  tags_raw:
  - health
  properties:
  - type: OpenAPI
    url: openapi/synack-health-api-openapi.yml
- aid: synack:synack-hosts-api
  name: Synack Hosts API
  description: Host assets.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Hosts
  properties:
  - type: OpenAPI
    url: openapi/synack-hosts-api-openapi.yml
- aid: synack:synack-missions-api
  name: Synack Missions API
  description: Access mission information.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Missions
  properties:
  - type: OpenAPI
    url: openapi/synack-missions-api-openapi.yml
- aid: synack:synack-mobileapps-api
  name: Synack mobileapps API
  description: Mobile application assets.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Mobile Apps
  tags_raw:
  - mobileapps
  properties:
  - type: OpenAPI
    url: openapi/synack-mobileapps-api-openapi.yml
- aid: synack:synack-patch-verifications-api
  name: Synack Patch Verifications API
  description: Operations related to patch verifications
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Patch Verifications
  properties:
  - type: OpenAPI
    url: openapi/synack-patch-verifications-api-openapi.yml
- aid: synack:synack-seeds-api
  name: Synack Seeds API
  description: Collections of seeds associated with a listing.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Seeds
  properties:
  - type: OpenAPI
    url: openapi/synack-seeds-api-openapi.yml
- aid: synack:synack-suspected-vulnerabilities-api
  name: Synack Suspected Vulnerabilities API
  description: Operations related to suspected vulnerabilities
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Suspected Vulnerabilities
  properties:
  - type: OpenAPI
    url: openapi/synack-suspected-vulnerabilities-api-openapi.yml
- aid: synack:synack-tags-api
  name: Synack Tags API
  description: Tags applied to seeds and seed groups.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Tags
  properties:
  - type: OpenAPI
    url: openapi/synack-tags-api-openapi.yml
- aid: synack:synack-tests-api
  name: Synack Tests API
  description: Operations related to security tests
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Tests
  properties:
  - type: OpenAPI
    url: openapi/synack-tests-api-openapi.yml
- aid: synack:synack-users-api
  name: Synack users API
  description: Users of credentials.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - User
  tags_raw:
  - users
  properties:
  - type: OpenAPI
    url: openapi/synack-users-api-openapi.yml
- aid: synack:synack-vulnerabilities-api
  name: Synack Vulnerabilities API
  description: Operations related to security vulnerabilities
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Vulnerabilities
  properties:
  - type: OpenAPI
    url: openapi/synack-vulnerabilities-api-openapi.yml
- aid: synack:synack-vulnerability-statuses-api
  name: Synack Vulnerability Statuses API
  description: Operations related to vulnerability statuses
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Vulnerability Statuses
  properties:
  - type: OpenAPI
    url: openapi/synack-vulnerability-statuses-api-openapi.yml
- aid: synack:synack-webapps-api
  name: Synack webapps API
  description: Web application assets.
  humanURL: https://docs.synack.com/
  baseURL: https://api.synack.com
  tags:
  - Web App
  tags_raw:
  - webapps
  properties:
  - type: OpenAPI
    url: openapi/synack-webapps-api-openapi.yml
common:
- type: Overlay
  url: overlays/synack-assessment-v1-overlay.yaml
- type: DeveloperPortal
  url: https://docs.synack.com/
- type: Documentation
  url: https://docs.synack.com/
- type: APIReference
  url: https://docs.synack.com/api-reference/introduction
- type: GettingStarted
  url: https://docs.synack.com/
- type: Authentication
  url: authentication/synack-authentication.yml
- type: OAuthScopes
  url: scopes/synack-scopes.yml
- type: ErrorCatalog
  url: errors/synack-problem-types.yml
- type: Conventions
  url: conventions/synack-conventions.yml
- type: DataModel
  url: data-model/synack-data-model.yml
- type: Lifecycle
  url: lifecycle/synack-lifecycle.yml
- type: Conformance
  url: conformance/synack-conformance.yml
- type: Compliance
  url: https://trustcenter.synack.com/
- type: TrustCenter
  url: security/synack-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/synack-vulnerability-disclosure.yml
- type: Security
  url: https://www.synack.com/vdp/synack/
- type: DomainSecurity
  url: security/synack-domain-security.yml
- type: X-MCPServerCandidate
  url: mcp/synack-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgenticAccess
  url: agentic-access/synack-agentic-access.yml
- type: LLMsTxt
  url: llms/synack-llms.txt
- type: Packages
  url: packages/synack-packages.yml
- type: AgentSkill
  url: skills/_index.yml
- type: GitHubOrganization
  url: https://github.com/synack
- type: Blog
  url: https://www.synack.com/blog/
- type: Pricing
  url: https://www.synack.com/pricing/
- type: SignUp
  url: https://login.synack.com/
- type: Login
  url: https://login.synack.com/
- type: Support
  url: https://www.synack.com/contact/
- type: TermsOfService
  url: https://www.synack.com/terms/
- type: PrivacyPolicy
  url: https://www.synack.com/privacy-policy/
- type: Website
  url: https://www.synack.com/
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 37
  pass: local-v1

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