The harness for coding agents - copy-paste operating rules that keep an AI coding agent honest on a codebase that has to survive.
This repository also configures its own agents. See what harness-kit tells them →
Skill Claude CodeCodex
Verify a claim that something does not exist, is dead code, is unused, or has no backup before acting on it. Use whenever you or the user are about to delete, skip, or rebuild something on the grounds that it is absent.
Skill Claude CodeCodex
Bring the repo's rules file, repo map, and pattern index back in line with the code. Use monthly, after a large refactor, or when the user says the rules feel stale or the agent keeps tripping on outdated docs.
Skill Claude CodeCodex
Set up or absorb the harness-kit operating rules in this repo. Use when the user asks to install harness-kit, set up agent rules, fill AGENTS.md placeholders, or fold harness-kit ideas into existing rules docs.
Skill Claude CodeCodex
Review a batch of changes as an independent reviewer who did not write them, before commit or push. Use after a set of edits, after an autonomous loop, or when the user asks for a pre-commit review.
Skill Claude CodeCodex
Record what a just-finished debugging session taught as a numbered card in PATTERNS.md. Use right after a bug is fixed and its root cause is known, or when the user asks to record, document, or register a pattern or incident.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: