# `ASM.Extensions.Policy.Enforcer`
[🔗](https://github.com/nshkrdotcom/agent_session_manager/blob/v0.9.2/lib/asm/extensions/policy/enforcer.ex#L1)

Sync-only policy pipeline plug.

Explicit violation handling:
- `:warn` -> keep event and inject `:guardrail_triggered`
- `:request_approval` -> halt source event and emit `:approval_requested`
- `:cancel` -> reject with `%ASM.Error{}` (`:guardrail_blocked`)

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*Consult [api-reference.md](api-reference.md) for complete listing*