Open Policy Agent website screenshot

Open Policy Agent

Open Policy Agent (OPA) is an open-source project that provides a flexible and powerful policy engine for cloud-native environments. OPA enables users to define and enforce policies across their infrastructure, applications, and services through a declarative language called Rego. OPA integrates seamlessly with popular tools and frameworks like Kubernetes, Istio, and Envoy, making it easy to implement fine-grained access control, security, and compliance policies.

Open Policy Agent publishes 8 APIs on the APIs.io network, including Compile API, Config API, Data API, and 5 more. Tagged areas include Policies and Standards.

The Open Policy Agent catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Open Policy Agent’s developer surface includes documentation, getting-started guide, authentication, engineering blog, changelog, Stack Overflow tag, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.4/100 thin ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFree
7 APIs
PoliciesStandards

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 37.4/100 · thin
Contract Quality 11.4 / 23
Developer Ergonomics 8.1 / 18
Access Clarity 2.4 / 18
Operational Transparency 4.3 / 12
Contract Governance 1.1 / 11
Discoverability 5.0 / 9
Create-or-Update Ergonomics 2.2 / 10
Agent readiness — 25/100 · 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 7 / 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 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/open-policy-agent: 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 8

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

Open Policy Agent Compile API

The Compile API from Open Policy Agent — 1 operation(s) for compile.

Open Policy Agent Config API

The Config API from Open Policy Agent — 1 operation(s) for config.

Open Policy Agent Data API

The Data API from Open Policy Agent — 2 operation(s) for data.

Open Policy Agent Health API

The Health API from Open Policy Agent — 2 operation(s) for health.

Open Policy Agent Policies API

The Policies API from Open Policy Agent — 2 operation(s) for policies.

Open Policy Agent Query API API

The Query API API from Open Policy Agent — 1 operation(s) for query api.

Open Policy Agent Query API

The Query API from Open Policy Agent — 1 operation(s) for query.

Open Policy Agent Status API

The Status API from Open Policy Agent — 1 operation(s) for status.

Scroll for all 8

Open Collections 16

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

API Collection

OPEN COLLECTION

Compile API

OPEN COLLECTION

Config API

OPEN COLLECTION

Data API

OPEN COLLECTION

Health API

OPEN COLLECTION

Compile API

OPEN COLLECTION

Compile Config API

OPEN COLLECTION

Compile Data API

OPEN COLLECTION

Compile Health API

OPEN COLLECTION

Compile Policies API

OPEN COLLECTION

Compile Query API API

OPEN COLLECTION

Compile Query API

OPEN COLLECTION

Compile Status API

OPEN COLLECTION

Policy API

OPEN COLLECTION

Query API

OPEN COLLECTION

Status API

OPEN COLLECTION

Scroll for all 16

Pricing Plans 1

Published pricing tiers and plan structures.

Open Policy Agent Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Open Policy Agent Rate Limits

1 limits

RATE LIMITS

FinOps 1

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

Open Policy Agent Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Opa Context

0 classes · 12 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Open Policy Agent API Rules

6 rules · 5 warnings 1 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Open Policy Agent Resources

0 properties

JSON SCHEMA

Security Posture 2

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

Open Policy Agent Domain Security

TLSv1.3 · HSTS

SECURITY

Open Policy Agent Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

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

Open Policy Agent Agentic Access

18 operations · 10 acting

18 operations · 10 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 3

Reference material describing how the API behaves

JSONSchema
JSONSchema
 Documentation
Documentation
 Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

JSONLD
JSONLD
 ErrorCodes
ErrorCodes

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 GitHubRepository
GitHubRepository
 PostmanWorkspace
PostmanWorkspace
 GitHubRepository
GitHubRepository

Access & Security 4

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 Security
Security

Operate 4

Status, limits, changes, and where to get help

Community
Community
 Slack
Slack
 ChangeLog
ChangeLog
 StackOverflow
StackOverflow

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: open-policy-agent
url: https://raw.githubusercontent.com/api-evangelist/open-policy-agent/refs/heads/main/apis.yml
apis:
- aid: open-policy-agent:open-policy-agent-compile-api
  name: Open Policy Agent Compile API
  description: The Compile API from Open Policy Agent — 1 operation(s) for compile.
  humanURL: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  tags:
  - Compile
  properties:
  - type: OpenAPI
    url: openapi/open-policy-agent-compile-api-openapi.yml
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  - type: JSONSchema
    url: json-schema/opa-policy-schema.json
  - type: BrunoCollection
    url: policy/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#data-api
  - type: BrunoCollection
    url: data/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#query-api
  - type: BrunoCollection
    url: query/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#compile-api
  - type: BrunoCollection
    url: compile/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#health-api
  - type: BrunoCollection
    url: health/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#config-api
  - type: BrunoCollection
    url: config/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#status-api
  - type: BrunoCollection
    url: status/bruno.json
- aid: open-policy-agent:open-policy-agent-config-api
  name: Open Policy Agent Config API
  description: The Config API from Open Policy Agent — 1 operation(s) for config.
  humanURL: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  tags:
  - Config
  properties:
  - type: OpenAPI
    url: openapi/open-policy-agent-config-api-openapi.yml
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  - type: JSONSchema
    url: json-schema/opa-policy-schema.json
  - type: BrunoCollection
    url: policy/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#data-api
  - type: BrunoCollection
    url: data/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#query-api
  - type: BrunoCollection
    url: query/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#compile-api
  - type: BrunoCollection
    url: compile/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#health-api
  - type: BrunoCollection
    url: health/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#config-api
  - type: BrunoCollection
    url: config/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#status-api
  - type: BrunoCollection
    url: status/bruno.json
- aid: open-policy-agent:open-policy-agent-data-api
  name: Open Policy Agent Data API
  description: The Data API from Open Policy Agent — 2 operation(s) for data.
  humanURL: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  tags:
  - Data
  properties:
  - type: OpenAPI
    url: openapi/open-policy-agent-data-api-openapi.yml
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  - type: JSONSchema
    url: json-schema/opa-policy-schema.json
  - type: BrunoCollection
    url: policy/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#data-api
  - type: BrunoCollection
    url: data/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#query-api
  - type: BrunoCollection
    url: query/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#compile-api
  - type: BrunoCollection
    url: compile/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#health-api
  - type: BrunoCollection
    url: health/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#config-api
  - type: BrunoCollection
    url: config/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#status-api
  - type: BrunoCollection
    url: status/bruno.json
- aid: open-policy-agent:open-policy-agent-health-api
  name: Open Policy Agent Health API
  description: The Health API from Open Policy Agent — 2 operation(s) for health.
  humanURL: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/open-policy-agent-health-api-openapi.yml
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  - type: JSONSchema
    url: json-schema/opa-policy-schema.json
  - type: BrunoCollection
    url: policy/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#data-api
  - type: BrunoCollection
    url: data/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#query-api
  - type: BrunoCollection
    url: query/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#compile-api
  - type: BrunoCollection
    url: compile/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#health-api
  - type: BrunoCollection
    url: health/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#config-api
  - type: BrunoCollection
    url: config/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#status-api
  - type: BrunoCollection
    url: status/bruno.json
- aid: open-policy-agent:open-policy-agent-policies-api
  name: Open Policy Agent Policies API
  description: The Policies API from Open Policy Agent — 2 operation(s) for policies.
  humanURL: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  tags:
  - Policies
  properties:
  - type: OpenAPI
    url: openapi/open-policy-agent-policies-api-openapi.yml
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  - type: JSONSchema
    url: json-schema/opa-policy-schema.json
  - type: BrunoCollection
    url: policy/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#data-api
  - type: BrunoCollection
    url: data/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#query-api
  - type: BrunoCollection
    url: query/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#compile-api
  - type: BrunoCollection
    url: compile/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#health-api
  - type: BrunoCollection
    url: health/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#config-api
  - type: BrunoCollection
    url: config/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#status-api
  - type: BrunoCollection
    url: status/bruno.json
- aid: open-policy-agent:open-policy-agent-query-api-api
  name: Open Policy Agent Query API API
  description: The Query API API from Open Policy Agent — 1 operation(s) for query api.
  humanURL: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  tags:
  - Query API
  properties:
  - type: OpenAPI
    url: openapi/open-policy-agent-query-api-api-openapi.yml
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  - type: JSONSchema
    url: json-schema/opa-policy-schema.json
  - type: BrunoCollection
    url: policy/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#data-api
  - type: BrunoCollection
    url: data/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#query-api
  - type: BrunoCollection
    url: query/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#compile-api
  - type: BrunoCollection
    url: compile/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#health-api
  - type: BrunoCollection
    url: health/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#config-api
  - type: BrunoCollection
    url: config/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#status-api
  - type: BrunoCollection
    url: status/bruno.json
- aid: open-policy-agent:open-policy-agent-query-api
  name: Open Policy Agent Query API
  description: The Query API from Open Policy Agent — 1 operation(s) for query.
  humanURL: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  tags:
  - Query
  properties:
  - type: OpenAPI
    url: openapi/open-policy-agent-query-api-openapi.yml
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  - type: JSONSchema
    url: json-schema/opa-policy-schema.json
  - type: BrunoCollection
    url: policy/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#data-api
  - type: BrunoCollection
    url: data/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#query-api
  - type: BrunoCollection
    url: query/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#compile-api
  - type: BrunoCollection
    url: compile/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#health-api
  - type: BrunoCollection
    url: health/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#config-api
  - type: BrunoCollection
    url: config/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#status-api
  - type: BrunoCollection
    url: status/bruno.json
- aid: open-policy-agent:open-policy-agent-status-api
  name: Open Policy Agent Status API
  description: The Status API from Open Policy Agent — 1 operation(s) for status.
  humanURL: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/open-policy-agent-status-api-openapi.yml
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#policy-api
  - type: JSONSchema
    url: json-schema/opa-policy-schema.json
  - type: BrunoCollection
    url: policy/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#data-api
  - type: BrunoCollection
    url: data/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#query-api
  - type: BrunoCollection
    url: query/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#compile-api
  - type: BrunoCollection
    url: compile/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#health-api
  - type: BrunoCollection
    url: health/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#config-api
  - type: BrunoCollection
    url: config/bruno.json
  - type: Documentation
    url: https://www.openpolicyagent.org/docs/latest/rest-api/#status-api
  - type: BrunoCollection
    url: status/bruno.json
name: Open Policy Agent
tags:
- Policies
- Standards
kind: contract
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Free
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/open-policy-agent.png
access: 3rd-Party
common:
- type: AgenticAccess
  url: agentic-access/open-policy-agent-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/open-policy-agent-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/open-policy-agent-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/open-policy-agent
- url: json-schema/opa-policy-schema.json
  name: OPA Policy Schema
  type: JSONSchema
- url: json-ld/opa-context.jsonld
  name: OPA JSON-LD Context
  type: JSONLD
- url: https://www.openpolicyagent.org/
  name: Website
  type: Website
- url: https://www.openpolicyagent.org/docs/latest/
  name: Documentation
  type: Documentation
- url: https://www.openpolicyagent.org/docs/latest/rest-api/
  name: REST API Documentation
  type: Documentation
- url: https://www.openpolicyagent.org/docs/latest/#running-opa
  name: Getting Started
  type: GettingStarted
- url: https://www.openpolicyagent.org/docs/latest/rest-api/#authentication
  name: Authentication
  type: Authentication
- url: https://www.openpolicyagent.org/docs/latest/rest-api/#errors
  name: Errors
  type: ErrorCodes
- url: https://github.com/open-policy-agent
  name: GitHub Organization
  type: GitHubOrganization
- url: https://github.com/open-policy-agent/opa
  name: OPA GitHub Repository
  type: GitHubRepository
- url: https://blog.openpolicyagent.org/
  name: Blog
  type: Blog
- url: https://www.openpolicyagent.org/community/
  name: Community
  type: Community
- url: https://slack.openpolicyagent.org/
  name: Slack
  type: Slack
- url: https://github.com/open-policy-agent/opa/blob/main/CHANGELOG.md
  name: Change Log
  type: ChangeLog
- url: https://github.com/open-policy-agent/opa/security/policy
  name: Security
  type: Security
- url: https://stackoverflow.com/questions/tagged/open-policy-agent
  name: Stack Overflow
  type: StackOverflow
- url: https://www.postman.com/api-evangelist/open-policy-agent/overview
  name: Postman Workspace
  type: PostmanWorkspace
- url: https://github.com/api-search/open-policy-agent
  name: GitHub Repository
  type: GitHubRepository
- type: Integrations
  url: https://www.openpolicyagent.org/ecosystem
created: '2024-11-18'
modified: '2026-05-19'
position: Consuming
description: Open Policy Agent (OPA) is an open-source project that provides a flexible and powerful policy engine for cloud-native
  environments. OPA enables users to define and enforce policies across their infrastructure, applications, and services through
  a declarative language called Rego. OPA integrates seamlessly with popular tools and frameworks like Kubernetes, Istio,
  and Envoy, making it easy to implement fine-grained access control, security, and compliance policies.
integrations:
- name: OPA
- name: GitHub
- name: Slack
- name: JavaScript
- name: Java
- name: C#
- name: Swift
- name: Clojure
- name: Rust
- name: PHP
- name: Zig
- name: CNCF
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'

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