zu-redteam 0.5.0

Zu plugin-test gate: contract/interop gates + the adversarial red-team agent and out-of-band verdict observers

zu-redteam

The plugin-test gate and the adversarial red team — the machinery behind the capability-envelope philosophy and the red-team design (in the published docs). The red team is itself a Zu agent: Zu is the runtime on both sides of the gate.

This is test/CI infrastructure — it is not loaded by a deployed agent. Run it with zu test-plugin <pkg> (install via pip install 'zu-runtime[test]').

What it does

A plugin is not "done" when its unit tests pass — it is done when it cooperates with other plugins and withstands an adversary inside a real Zu runtime. The gate runs the graded gates in order and renders one verdict:

zu test-plugin zu-tools
  ✅ unit         PASS
  ✅ contract     PASS — port shape + declared capability envelope
  ✅ interop      PASS — stood up with >= 3 cross-category neighbours
  ✅ adversarial  PASS — frozen corpus + directed probes; envelope held
  ⊘ container    SKIP — Docker not present (production form of the same run)

The pieces

Module	Role
verdict.py	The out-of-band, deterministic judge: egress / exfil / provenance / resources / neighbour-health observers. The attacker never certifies.
corpus.py	The frozen regression corpus — the §4 attacks as deterministic runs. Only ever grows.
attacker.py	The attacker agent + tools + fleet. ScriptedAttacker (deterministic, CI); LiveAttacker (opt-in frontier discovery, ZU_REDTEAM_LIVE=1).
harness.py	Stands a target up in a real in-process Zu run and captures it for the observers.
contract.py	Port/contract conformance (shape, types, declared envelope).
gate.py	Orchestrates the gates → GateReport; the entry point zu test-plugin calls.

Determinism

Discovery (a live frontier attacker) is non-deterministic by design; a discovered breach is frozen into corpus.py and replayed deterministically thereafter — so CI stays reproducible while the corpus only grows. The container gate is the production form of the same in-process run (same observers, same verdict).

Tests

uv run pytest packages/zu-redteam — offline, deterministic. The suite proves the gate both passes a safe plugin and fails an unsafe one (a tool that under-declares egress, or leaks a planted secret).