Lesson 4 of 6
What is a harness?
A harness is everything an agent needs to do a role, not just a task:
| Part | File | What it does |
|---|---|---|
| Rules | AGENTS.md / CLAUDE.md / GEMINI.md |
Role, hard rules, what never to do |
| Skills | skills/*/SKILL.md |
How to do each job |
| Connectors | mcp.json |
Which tools it plugs into |
| Routines | ROUTINES.md |
What runs daily or weekly |
| Memory | memory/ |
Files it keeps current: preferences, logs, decisions |
| Evals | EVAL.md |
Tests to pass before you trust it |
Download a harness zip, unzip it into a folder, open your agent there and follow INSTALL.md.