Are there any policy enforcement engines that inspect agent actions before execution and support SDK integration?

Yes — a few policy enforcement engines do this, and some are designed to sit in front of agent/tool execution so you can inspect or block actions before they run.

Common examples:

• OPA (Open Policy Agent)

  • Can evaluate policies before an action is executed.
  • Commonly integrated via SDKs or embedded decision points.
  • Good for general-purpose authorization and workflow control.

• Cedar

  • AWS’s policy language/engine.
  • Supports programmatic evaluation via SDKs.
  • Useful if you want fine-grained authorization checks before agent actions.

• OpenPolicy / policy-as-code layers in agent frameworks

  • Some agent orchestration frameworks expose middleware/hooks to intercept tool calls.
  • These are often not full policy engines themselves, but can be paired with OPA/Cedar.

• Guardrails / tool-call interception frameworks

  • Several AI-agent safety frameworks provide pre-execution validation hooks.
  • SDK integration is usually straightforward, though capabilities vary by product.

If you want, I can also give you:

1. a short list of best fit options for LLM agents specifically, or
2. an example architecture for intercepting tool calls before execution.