---
name: gz-mx
persona: main-session
description: >
  Enter and exit the MX Maintenance Hangar — operator's interface to gz mx.
  Use when entering the hangar to perform governance repair, checking hangar
  status mid-session, or cleanly exiting when repair is complete.
  Operator operates the skill; the skill invokes gz mx; nobody shells out.
category: agent-operations
lifecycle_state: active
owner: gzkit-governance
last_reviewed: 2026-06-27
model: haiku
gz_command: mx
metadata:
  skill-version: "1.0.0"
---

# gz mx

## Overview

The MX Maintenance Hangar lets the operator repair governance surfaces that
the guards themselves protect. While the hangar is open, most governance
guards drop to advisory so repair work can proceed without the checked-in
surfaces blocking the repair itself. Two guards NEVER drop: `gate5_invariants`
and the PRIME DIRECTIVE (ownership — "fix what you know AND what you find").

The operator operates this skill; the skill invokes `gz mx`; nobody shells
out to `gz mx enter` or `gz mx exit` directly.

## When to Use

- **Entering the hangar** — governance repair session needs to begin; guards
  need to go advisory so you can fix the surfaces they protect
- **Checking hangar status** — confirming whether the hangar is currently
  open mid-session
- **Clean exit** — repair is complete; re-enforce all guards at full strength

## Workflow

1. **Open the hangar**
   ```bash
   uv run gz mx enter
   ```
   Creates `.gzkit/mx-active` marker. Most governance guards drop to advisory.

2. **Perform the repair**
   Work on the governance surfaces that needed fixing. Gate 5 invariants and
   the PRIME DIRECTIVE still bind — guards drop to advisory so you can repair
   governance itself, not so defects can be deferred.

3. **Close the hangar**
   ```bash
   uv run gz mx exit
   ```
   Removes `.gzkit/mx-active` marker. Every guard re-runs at full strength;
   exit is a hard gate (all guards must pass before exit succeeds).

## Example

```bash
# Enter the hangar to repair a drifted OBPI brief
uv run gz mx enter

# Perform repair work (briefs, rules, docs)
# ...

# Exit — guards re-enforce; exit fails if any guard is still red
uv run gz mx exit
```

## Constraints

- Operator operates the skill; the skill invokes `gz mx`; nobody shells out
- `gate5_invariants` and the PRIME DIRECTIVE bind throughout the session
- Exit is a hard gate — do not attempt exit until all detectable defects are fixed
- See `.gzkit/rules/mx-mode.md` for the binding agent rule for hangar sessions