Glossary
Policy engine
Policy engine is defined here as follows. Software that returns a decision from policy code, separate from the application that enforces it. Open Policy Agent evaluates structured input against Rego policy. The directory source for this term is Open Policy Agent documentation.
Last verified 2026-10-17
Sources
Listings
Directory listings whose sources describe this mechanism.
| Name | Status | Category | Open source | Mechanism |
|---|---|---|---|---|
| Invariant | Live | Governance and mandates | No | Contextual security layer that checks an agent trace against declarative rules for tool calls, data flow, secrets, and looping. guardrails, policy, traces |
| Open Policy Agent | Live | Governance and mandates | Yes | Open source policy engine. An application sends structured input and OPA returns a decision from Rego policy, separate from the code that enforces it. policy, mandates, rego |
Questions
- What is Policy engine?
- Software that returns a decision from policy code, separate from the application that enforces it. Open Policy Agent evaluates structured input against Rego policy.
- Which listings use Policy engine?
- Invariant, Open Policy Agent.
- When was Policy engine last verified?
- Last verified 2026-10-17.