# Open Policy Agent (OPA)

**Canonical:** https://apis.io/apis/zero-trust-architecture/open-policy-agent/  
**Provider:** Zero Trust Architecture — https://apis.io/providers/zero-trust-architecture/  
**Documentation:** https://www.openpolicyagent.org/

Open Policy Agent (OPA) is one of 5 APIs that [Zero Trust Architecture](https://apis.io/providers/zero-trust-architecture/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Authorization, CNCF, Open-Source, Policy Engine, and Zero Trust. The published artifact set on APIs.io includes API documentation.

Open Policy Agent is a CNCF-graduated open source general-purpose policy engine that enables unified, context-aware policy enforcement across APIs, microservices, Kubernetes, and CI/CD pipelines. In Zero Trust implementations, OPA serves as the Policy Decision Point (PDP) evaluating access requests against defined policies written in the Rego language.

## Machine-readable artifacts (2)

- **Documentation** — https://www.openpolicyagent.org/docs/latest/
- **GitHubOrganization** — https://github.com/open-policy-agent

## Other Zero Trust Architecture APIs (4)

- [NIST SP 800-207 Zero Trust Architecture](https://apis.io/apis/zero-trust-architecture/nist-sp-800-207/)
- [NIST SP 800-207A ZTA for Cloud-Native Applications](https://apis.io/apis/zero-trust-architecture/nist-sp-800-207a/)
- [SPIFFE - Secure Production Identity Framework for Everyone](https://apis.io/apis/zero-trust-architecture/spiffe/)
- [SPIRE - SPIFFE Runtime Environment](https://apis.io/apis/zero-trust-architecture/spire/)

## Tags

Authorization, CNCF, Open-Source, Policy Engine, Zero Trust

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/zero-trust-architecture/open-policy-agent/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/zero-trust-architecture/.