Aegis Boundary Skill

Aegis Boundary Skill

Verify what AI agents are allowed to see, do, and output.

aegis-boundary is a free, official Aegis skill for AI coding agents. It performs an advisory review of agent work around Aegis surfaces — code changes, documents, public claims, and agent task plans — and returns READY / REVIEW / STOPPED with machine-check evidence.

It is a review layer, not an enforcer: it does not authorize production access, enforce policy, or produce receipts. Runtime enforcement belongs to the aegis-trust SDK (LITE, in-process hygiene) and Aegis Core (FULL, gateway enforcement with key separation).

What it checks

• Boundary: does the work keep the SDK / Gateway / Core responsibility split intact (cooperative hygiene vs. non-cooperative enforcement)?
• Claims: do README / site / sales statements stay within what is implemented? LITE/FULL claim separation, never-claims, certification wording, and three machine-checked overclaim families.
• Agent plans: is what the agent is about to see, do, and output within declared purpose and scope — without treating a purpose label as authorization?

Output shape:

Decision: READY | REVIEW | STOPPED
Machine checks: overclaim_scan PASS|FAIL
Why / Allowed (advisory) / Blocked (advisory) / Required checks / Next

Requirements

The overclaim scan (scripts/check_overclaims.py) needs Python 3.7+. The skill instructions themselves are plain markdown and need no runtime.

Install

Claude Code (plugin marketplace):

/plugin marketplace add Incierge3789/aegis-boundary
/plugin install aegis-boundary@aegis-skills

Codex (agent skills):

mkdir -p ~/.agents/skills
cp -R skills/aegis-boundary ~/.agents/skills/

(or ./install.sh codex)

Gemini CLI (extension):

gemini extensions install https://github.com/Incierge3789/aegis-boundary

Cursor (plugin): this repository follows the Cursor plugin layout (.cursor-plugin/plugin.json + skills/); marketplace listing pending.

Layout

skills/aegis-boundary/
├── SKILL.md                      # the skill (trigger spec + review procedure)
├── references/boundary_canon.md  # vendored boundary canon (parity-tracked)
├── references/pitfalls.md        # defaults a model gets wrong
├── templates/boundary_review.md  # READY/REVIEW/STOPPED output template
└── scripts/check_overclaims.py   # machine check (3 overclaim families)

Honesty contract

This skill applies the same rules to itself that it reviews for: it is described as advisory everywhere, its bundled canon is parity-tracked against the internal canonical document (docs/PARITY.md), and its own files pass its own machine checks.

License

MIT — see LICENSE. Copyright (c) 2026 Aegis Project (Incierge).

The MIT license covers the code and text of this repository. It does not grant rights to the "Aegis" name or logos, or the right to represent forks as official Aegis distributions. The official distribution of this skill is github.com/Incierge3789/aegis-boundary.