opa ☆

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Description:
Open source, general-purpose policy engine

Type: Formula | Latest Version: 1.12.1@0 | Tracked Since: Dec 16, 2025

Links: Homepage | @OpenPolicyAgent | formulae.brew.sh

Category: Security

Tags: policy-as-code authorization rego devsecops compliance

Install: brew install opa

About:
Open Policy Agent (OPA) is an open-source, general-purpose policy engine that enables unified, context-aware policy enforcement across the stack. It decouples policy decision-making from application logic using a high-level declarative language called Rego. OPA helps developers and security teams codify and manage fine-grained access control, infrastructure security, and compliance policies.

Key Features:

Declarative policy language (Rego) for complex rules
Unified policy as code across microservices, CI/CD, and infrastructure
High-performance evaluation with flexible deployment (sidecar, library, API)
Rich tooling including a REPL, test framework, and bundle API

Use Cases:

API authorization and fine-grained access control
Infrastructure as Code (IaC) validation and Kubernetes admission control
Data filtering and data governance enforcement
CI/CD pipeline policy checks and compliance automation

Alternatives:

Cedar – AWS's policy language focused on fine-grained authorization with a different language design and ecosystem
Styra DAS – Enterprise control plane and managed service built around OPA for governance and lifecycle management

Version History

Detected	Version	Change	Commit
Dec 26, 2025 7:51pm	1.12.1	VERSION_BUMP	f148e649
Dec 18, 2025 11:09pm	1.12.0	VERSION_BUMP	89aa2c66
Dec 18, 2025 2:16pm	1.11.1	VERSION_BUMP	d0552f42
Dec 16, 2025 11:14pm		VERSION_BUMP	be781d93
Nov 26, 2025 2:22pm		VERSION_BUMP	4b67f2f3
Oct 10, 2025 4:08pm		VERSION_BUMP	a048465b
Sep 26, 2025 11:12am		VERSION_BUMP	4da027c6
Sep 16, 2025 9:34am		VERSION_BUMP	759be085
Oct 31, 2024 9:46pm		VERSION_BUMP	4459913d
Sep 30, 2024 3:48pm		VERSION_BUMP	9b71314a