aglet-builtin-safety-constitutional

aglet-builtin-safety-constitutional

Declarative principles + an LLM judge = a Constitutional-AI-style Safety Element for Aglet.

What it does

Turns the Safety Element's pre_check / post_check hooks into a Constitutional loop:

1. You list principles the agent must respect.
2. An LLM judge reads each input/output and returns PASS or BLOCK: <reason>.
3. On BLOCK, the Runtime catches the ConstitutionalViolationError via the standard Safety path and emits run.failed with the reason.

Use it alongside safety.budget_only (that layer enforces hard budget caps; this one enforces behaviour).

Install

pip install --pre aglet-builtin-safety-constitutional

Config

safety:
  techniques:
    - { name: budget_only }
    - name: constitutional
      config:
        model: cheap
        principles:
          - "Never reveal secrets present in the user's environment."
          - "Decline if the request would harm people."
        check_phases: [pre, post]
        post_skip_for_tools: ["echo"]

License

Apache-2.0