Cerbos website screenshot

Cerbos

Cerbos is an open-core, language-agnostic, scalable authorization platform that decouples access control from application code by externalizing fine-grained, context-aware permission decisions into policy-as-code. Authorization is expressed in YAML policies supporting RBAC, ABAC, PBAC, and ReBAC, evaluated by a stateless Policy Decision Point (PDP) that delivers sub-millisecond decisions at scale. The platform consists of the open-source Cerbos PDP (Apache 2.0), Cerbos Hub control plane (PAP), Cerbos Synapse enrichment layer, and PEP SDKs for Go, Java, JavaScript / TypeScript, .NET, PHP, Python, Ruby, and Rust. The PDP exposes both REST (port 3592) and gRPC (port 3593) interfaces, an Admin API, and standards- compliant OpenID AuthZEN endpoints, with query-plan adapters for Prisma and SQLAlchemy.

Cerbos publishes 9 APIs on the APIs.io network, including AuthZEN API, Admin Audit API, Admin Policies API, and 6 more. Tagged areas include ABAC, Access Control, Authorization, AuthZEN, and Open-Source.

Cerbos’ developer surface includes authentication, documentation, getting-started guide, GitHub presence, release notes, engineering blog, pricing, and 25 more developer resources.

42.4/100 developing ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFreemiumSelf serve
1 APIs 1 Agent Skills 19 Features 10 Use Cases
ABACAccess ControlAuthorizationAuthZENOpen-SourcePBACPDPPermissionsPolicy as CodeRBACReBACZero Trust

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Regulatory Posture applies to this provider. Its tags matched the Insurance regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
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.
The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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/cerbos: 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 13

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

Cerbos PDP gRPC API

The Cerbos PDP gRPC API exposes the cerbos.svc.v1.CerbosService and related management services on port 3593, with server reflection enabled. The gRPC interface is the highest-p...

Cerbos AuthZEN API

Cerbos implements the OpenID AuthZEN authorization API specification, exposing standards-compliant single-evaluation, batch-evaluations, and well-known metadata endpoints so tha...

Cerbos PDP Admin API

The Cerbos Admin API provides management capabilities such as policy add/get/list, schema management, and audit log access on the running PDP. It is intended for administrative ...

Cerbos Hub API

Cerbos Hub is the cloud-hosted Policy Administration Point (PAP) that manages policy authoring, versioning, validation, and distribution to Cerbos PDPs across environments. It a...

Cerbos Synapse

Cerbos Synapse is the enrichment and orchestration component that fetches identity, resource, and relationship attributes from external systems and translates infrastructure pro...

Cerbos Admin Audit API

Audit and decision log access (Admin API).

Cerbos Admin Policies API

Policy management (Admin API).

Cerbos Admin Schemas API

JSON schema management (Admin API).

Cerbos Admin Store API

Policy store administration (Admin API).

Cerbos AuthZEN API

OpenID AuthZEN standards-compliant evaluation endpoints.

Cerbos Check API

Evaluate authorization decisions.

Cerbos Plan API

Generate query plans for resource filtering.

Cerbos Server API

PDP server metadata.

Scroll for all 13

Open Collections 10

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

API Collection

OPEN COLLECTION

Cerbos PDP REST API

OPEN COLLECTION

Scroll for all 10

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

cerbos-policy

AGENT SKILL

GraphQL 1

GraphQL schemas published by this provider.

Pricing Plans 1

Published pricing tiers and plan structures.

Cerbos Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cerbos Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Features 19

Notable capabilities this provider offers.

Policy as Code

YAML Policies

RBAC

ABAC

PBAC

ReBAC

Derived Roles

Sub-Millisecond Decisions

Stateless PDP

REST and gRPC APIs

AuthZEN Standard

Query Plan Generation

Audit Logs

Policy Versioning

Schema Validation

Multiple Storage Backends

Sidecar Deployment

Embedded PDP

Apache 2.0 License

Scroll for all 19

Security Posture 2

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

Cerbos Authentication

http · 1 scheme

SECURITY

Cerbos Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Cerbos Agentic Access

22 operations · 12 acting · 1 human-in-the-loop

22 operations · 12 acting

AGENTIC

Use Cases 10

What developers build with this provider.

Multi-Tenant SaaS Authorization

API Authorization

AI Agent Access Control

MCP Server Security

RAG Access Control

Non-Human Identity Authorization

Zero Trust Enforcement

Compliance (SOC 2, HIPAA, GDPR, FedRAMP, PCI DSS)

Fintech Permissions

Healthcare Permissions

Scroll for all 10

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 3

Reference material describing how the API behaves

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

Build 5

SDKs, sample code, and the tooling you integrate with

Access & Security 3

Authentication, authorization, and security posture

Learn 1

Tutorials, courses, talks, and written guidance

Operate 3

Status, limits, changes, and where to get help

Commercial 4

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Other 7

Properties that don't map to a standard resource type

Scroll for all 7

Source (apis.yml)

apis.yml Raw ↑
aid: cerbos
name: Cerbos
description: Cerbos is an open-core, language-agnostic, scalable authorization platform that decouples access control from
  application code by externalizing fine-grained, context-aware permission decisions into policy-as-code. Authorization is
  expressed in YAML policies supporting RBAC, ABAC, PBAC, and ReBAC, evaluated by a stateless Policy Decision Point (PDP)
  that delivers sub-millisecond decisions at scale. The platform consists of the open-source Cerbos PDP (Apache 2.0), Cerbos
  Hub control plane (PAP), Cerbos Synapse enrichment layer, and PEP SDKs for Go, Java, JavaScript / TypeScript, .NET, PHP,
  Python, Ruby, and Rust. The PDP exposes both REST (port 3592) and gRPC (port 3593) interfaces, an Admin API, and standards-
  compliant OpenID AuthZEN endpoints, with query-plan adapters for Prisma and SQLAlchemy.
type: Index
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  try_now_blocked_by: loopback
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cerbos.png
tags:
- ABAC
- Access Control
- Authorization
- AuthZEN
- Open-Source
- PBAC
- PDP
- Permissions
- Policy as Code
- RBAC
- ReBAC
- Zero Trust
tags_raw:
- ABAC
- Access Control
- Authorization
- AuthZEN
- Open Source
- PBAC
- PDP
- Permissions
- Policy as Code
- RBAC
- ReBAC
- Zero Trust
url: https://raw.githubusercontent.com/api-evangelist/cerbos/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: cerbos:cerbos-pdp-grpc-api
  name: Cerbos PDP gRPC API
  description: The Cerbos PDP gRPC API exposes the cerbos.svc.v1.CerbosService and related management services on port 3593,
    with server reflection enabled. The gRPC interface is the highest-performance way to embed Cerbos as a sidecar or in-process
    service for service-to-service authorization.
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: localhost:3593
  tags:
  - gRPC
  - PDP
  - Protocol Buffers
  properties:
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Protocol
    url: https://github.com/cerbos/cerbos/tree/main/api/genpb
- aid: cerbos:cerbos-authzen-api
  name: Cerbos AuthZEN API
  description: Cerbos implements the OpenID AuthZEN authorization API specification, exposing standards-compliant single-evaluation,
    batch-evaluations, and well-known metadata endpoints so that any AuthZEN-conformant client or Policy Enforcement Point
    can integrate with Cerbos as the decision engine.
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  tags:
  - AuthZEN
  - OpenID
  - Standards
  properties:
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index#authzen
  - type: Specification
    url: https://openid.net/specs/authorization-api-1_0.html
  - type: Discovery
    url: https://docs.cerbos.dev/cerbos/latest/api/index#authzen
- aid: cerbos:cerbos-admin-api
  name: Cerbos PDP Admin API
  description: The Cerbos Admin API provides management capabilities such as policy add/get/list, schema management, and audit
    log access on the running PDP. It is intended for administrative use and is gated by HTTP Basic Auth.
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/admin_api
  tags:
  - Admin
  - Audit Log
  - Policy Management
  properties:
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/admin_api
- aid: cerbos:cerbos-hub-api
  name: Cerbos Hub API
  description: Cerbos Hub is the cloud-hosted Policy Administration Point (PAP) that manages policy authoring, versioning,
    validation, and distribution to Cerbos PDPs across environments. It also provides decision logs, collaborative policy
    editing, and embedded PDP delivery.
  humanURL: https://docs.cerbos.dev/cerbos-hub/
  tags:
  - Cloud
  - Hub
  - Policy Administration
  - Policy Distribution
  properties:
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos-hub/
  - type: Console
    url: https://hub.cerbos.cloud/
- aid: cerbos:cerbos-synapse
  name: Cerbos Synapse
  description: Cerbos Synapse is the enrichment and orchestration component that fetches identity, resource, and relationship
    attributes from external systems and translates infrastructure protocols (HTTP, gRPC, GraphQL) into Cerbos authorization
    checks for ReBAC and ABAC scenarios.
  humanURL: https://www.cerbos.dev/products/synapse
  tags:
  - Enrichment
  - ReBAC
  - Synapse
  properties:
  - type: Documentation
    url: https://www.cerbos.dev/products/synapse
- aid: cerbos:cerbos-admin-audit-api
  name: Cerbos Admin Audit API
  description: Audit and decision log access (Admin API).
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: http://localhost:3592
  tags:
  - Admin Audit
  properties:
  - type: OpenAPI
    url: openapi/cerbos-admin-audit-api-openapi.yml
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Reference
    url: https://docs.cerbos.dev/cerbos/latest/api/index#api-resources
  - type: GraphQL
    url: graphql/cerbos-graphql.md
- aid: cerbos:cerbos-admin-policies-api
  name: Cerbos Admin Policies API
  description: Policy management (Admin API).
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: http://localhost:3592
  tags:
  - Admin Policies
  properties:
  - type: OpenAPI
    url: openapi/cerbos-admin-policies-api-openapi.yml
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Reference
    url: https://docs.cerbos.dev/cerbos/latest/api/index#api-resources
  - type: GraphQL
    url: graphql/cerbos-graphql.md
- aid: cerbos:cerbos-admin-schemas-api
  name: Cerbos Admin Schemas API
  description: JSON schema management (Admin API).
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: http://localhost:3592
  tags:
  - Admin Schemas
  properties:
  - type: OpenAPI
    url: openapi/cerbos-admin-schemas-api-openapi.yml
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Reference
    url: https://docs.cerbos.dev/cerbos/latest/api/index#api-resources
  - type: GraphQL
    url: graphql/cerbos-graphql.md
- aid: cerbos:cerbos-admin-store-api
  name: Cerbos Admin Store API
  description: Policy store administration (Admin API).
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: http://localhost:3592
  tags:
  - Admin Store
  properties:
  - type: OpenAPI
    url: openapi/cerbos-admin-store-api-openapi.yml
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Reference
    url: https://docs.cerbos.dev/cerbos/latest/api/index#api-resources
  - type: GraphQL
    url: graphql/cerbos-graphql.md
- aid: cerbos:cerbos-authzen-api
  name: Cerbos AuthZEN API
  description: OpenID AuthZEN standards-compliant evaluation endpoints.
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: http://localhost:3592
  tags:
  - AuthZEN
  properties:
  - type: OpenAPI
    url: openapi/cerbos-authzen-api-openapi.yml
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Reference
    url: https://docs.cerbos.dev/cerbos/latest/api/index#api-resources
  - type: GraphQL
    url: graphql/cerbos-graphql.md
- aid: cerbos:cerbos-check-api
  name: Cerbos Check API
  description: Evaluate authorization decisions.
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: http://localhost:3592
  tags:
  - Check
  properties:
  - type: OpenAPI
    url: openapi/cerbos-check-api-openapi.yml
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Reference
    url: https://docs.cerbos.dev/cerbos/latest/api/index#api-resources
  - type: GraphQL
    url: graphql/cerbos-graphql.md
- aid: cerbos:cerbos-plan-api
  name: Cerbos Plan API
  description: Generate query plans for resource filtering.
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: http://localhost:3592
  tags:
  - Plan
  properties:
  - type: OpenAPI
    url: openapi/cerbos-plan-api-openapi.yml
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Reference
    url: https://docs.cerbos.dev/cerbos/latest/api/index#api-resources
  - type: GraphQL
    url: graphql/cerbos-graphql.md
- aid: cerbos:cerbos-server-api
  name: Cerbos Server API
  description: PDP server metadata.
  humanURL: https://docs.cerbos.dev/cerbos/latest/api/index
  baseURL: http://localhost:3592
  tags:
  - Server
  properties:
  - type: OpenAPI
    url: openapi/cerbos-server-api-openapi.yml
  - type: Documentation
    url: https://docs.cerbos.dev/cerbos/latest/api/index
  - type: Reference
    url: https://docs.cerbos.dev/cerbos/latest/api/index#api-resources
  - type: GraphQL
    url: graphql/cerbos-graphql.md
common:
- type: CodeOfConduct
  url: https://github.com/cerbos/cerbos/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/cerbos/cerbos/blob/main/CONTRIBUTING.md
- type: AgenticAccess
  url: agentic-access/cerbos-agentic-access.yml
- type: DomainSecurity
  url: security/cerbos-domain-security.yml
- type: Authentication
  url: authentication/cerbos-authentication.yml
- type: Website
  url: https://www.cerbos.dev
- type: Documentation
  url: https://docs.cerbos.dev
- type: GettingStarted
  url: https://docs.cerbos.dev/cerbos/latest/quickstart
- type: API
  url: https://docs.cerbos.dev/cerbos/latest/api/index
- type: OpenAPI
  url: https://docs.cerbos.dev/cerbos/latest/api/swagger.json
- type: Hub
  url: https://hub.cerbos.cloud/
- type: GitHub
  url: https://github.com/cerbos/cerbos
- type: GitHubOrganization
  url: https://github.com/cerbos
- type: SourceCode
  url: https://github.com/cerbos/cerbos
- type: IssueTracker
  url: https://github.com/cerbos/cerbos/issues
- type: ReleaseNotes
  url: https://github.com/cerbos/cerbos/releases
- type: Blog
  url: https://www.cerbos.dev/blog
- type: Pricing
  url: https://www.cerbos.dev/pricing
- type: CaseStudies
  url: https://www.cerbos.dev/case-studies
- type: Customers
  url: https://www.cerbos.dev/customers
- type: Slack
  url: https://join.slack.com/t/cerbos/shared_invite/zt-1a99bp8d6-fJiaY7lpDRRUe4UB1u35Yw
- type: X
  url: https://x.com/CerbosDev
- type: LinkedIn
  url: https://www.linkedin.com/company/cerbos
- type: YouTube
  url: https://www.youtube.com/@cerbos
- type: License
  url: https://github.com/cerbos/cerbos/blob/main/LICENSE
- type: SecurityPolicy
  url: https://www.cerbos.dev/security
- type: TermsOfService
  url: https://www.cerbos.dev/terms
- type: PrivacyPolicy
  url: https://www.cerbos.dev/privacy
- type: Playground
  url: https://play.cerbos.dev
- type: DockerHub
  url: https://hub.docker.com/r/cerbos/cerbos
- name: Features
  type: Features
  data:
  - name: Policy as Code
  - name: YAML Policies
  - name: RBAC
  - name: ABAC
  - name: PBAC
  - name: ReBAC
  - name: Derived Roles
  - name: Sub-Millisecond Decisions
  - name: Stateless PDP
  - name: REST and gRPC APIs
  - name: AuthZEN Standard
  - name: Query Plan Generation
  - name: Audit Logs
  - name: Policy Versioning
  - name: Schema Validation
  - name: Multiple Storage Backends
  - name: Sidecar Deployment
  - name: Embedded PDP
  - name: Apache 2.0 License
- name: UseCases
  type: UseCases
  data:
  - name: Multi-Tenant SaaS Authorization
  - name: API Authorization
  - name: AI Agent Access Control
  - name: MCP Server Security
  - name: RAG Access Control
  - name: Non-Human Identity Authorization
  - name: Zero Trust Enforcement
  - name: Compliance (SOC 2, HIPAA, GDPR, FedRAMP, PCI DSS)
  - name: Fintech Permissions
  - name: Healthcare Permissions
- name: Integrations
  type: Integrations
  data:
  - name: Kong
  - name: Gravitee
  - name: Kubernetes
  - name: Envoy
  - name: Neo4j
  - name: Trino
  - name: Model Context Protocol
  - name: Anthropic
  - name: Chroma
  - name: Pinecone
  - name: Okta
  - name: Microsoft Entra ID
  - name: AWS Cognito
  - name: Keycloak
  - name: Auth0
  - name: Clerk
  - name: Stytch
  - name: WorkOS
  - name: Zitadel
  - name: Prisma
  - name: SQLAlchemy
- name: SDKs
  type: SDKs
  data:
  - name: Go SDK
  - name: Java SDK
  - name: JavaScript / TypeScript SDK
  - name: .NET SDK
  - name: PHP SDK
  - name: Python SDK
  - name: Ruby SDK
  - name: Rust SDK
- type: Integrations
  url: https://www.cerbos.dev/ecosystem
- name: Agent Skills
  url: https://github.com/cerbos/skills
  type: AgentSkills
- type: LlmsText
  url: https://docs.cerbos.dev/llms.txt
integrations:
- name: Cerbos
- name: /assets/footer/socials/x.svg
- name: /assets/footer/socials/github.svg
- name: /assets/footer/socials/mail.svg
- name: /assets/footer/socials/youtube.svg
- name: /assets/footer/socials/linkedin.svg
- name: /assets/footer/socials/slack.svg
- name: /assets/footer/socials/npm.svg
- name: /assets/footer/socials/rss.svg
- name: /assets/footer/compliance/soc-2.svg
- name: /assets/footer/compliance/gdpr.svg
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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