pip install agentharnesses-cli

ahar init

ahar init my-harness

my-harness/
├── HARNESS.md                       # entry point and agent identity
├── README.md                        # human-facing description
├── .gitignore
├── .claude/settings.json            # registers the harness as a Claude Code plugin
├── skills/
│   └── SKILLS.md                    # skill index
└── references/
    └── REFERENCES.md                # reference index

├── .claude/skills/agent-harnesses/  # metaskill for progressive harness exploration
└── skills/
    └── maintenance/
        ├── SKILLS.md
        └── modify-harness/
            └── SKILL.md

ahar validate ./my-harness

ahar read ./my-harness name
ahar read ./my-harness description

ahar prompt ./my-harness