challenge

Hawksfold Skills

A growing collection of Claude Code skills, distributed as a plugin marketplace.

Skills

Skill	What it does
challenge	Stress-test a plan or decision with a calibrated, balanced counter-view — surfaces the load-bearing assumption, triages objections by severity, and ends with the cheapest test to settle the question.
attack-challenge	The heavier sibling of challenge — a two-round adversarial review: attacks any output from six lenses with severity/confidence triage, persists deferrals to docs/technical-debt.md, and synthesizes the strongest version for you to approve. For deliverables you're about to act on.

Install (recommended: via the marketplace)

From inside Claude Code:

/plugin marketplace add hawksfold/skills
/plugin install challenge@hawksfold-skills
/plugin install attack-challenge@hawksfold-skills

challenge triggers automatically when you ask Claude to challenge, red-team, pressure-test, or poke holes in a plan. attack-challenge is the heavier, two-round pass — it triggers on attack my plan / find weaknesses / tear this apart or after a significant deliverable you're about to act on. Either can be invoked directly from the / menu.

Install (manual, no plugin)

Copy a skill's directory into your personal or project skills folder — Claude Code auto-discovers SKILL.md files there, no manifest needed:

# Personal (all projects)
cp -r plugins/challenge/skills/challenge ~/.claude/skills/challenge

# Project-only
cp -r plugins/challenge/skills/challenge .claude/skills/challenge

Layout

.
├── .claude-plugin/
│   └── marketplace.json          # lists the plugins in this repo
├── LICENSE
└── plugins/
    ├── challenge/
    │   ├── .claude-plugin/
    │   │   └── plugin.json        # plugin manifest
    │   └── skills/
    │       └── challenge/
    │           └── SKILL.md       # the skill itself
    └── attack-challenge/
        ├── .claude-plugin/
        │   └── plugin.json
        └── skills/
            └── attack-challenge/
                └── SKILL.md

Develop / test locally

Add this repo as a local marketplace, then install from it:

/plugin marketplace add /path/to/this/repo
/plugin install challenge@hawksfold-skills

Edits to a SKILL.md take effect within the session — no restart needed.

License

MIT — see LICENSE. Copyright (c) 2026 Hawksfold.