Agent Harness Kit — Git skill for Claude Code

Agent Harness Kit

A generic, editable harness that makes coding agents (Claude Code, GitHub Copilot, Codex, Cursor, anything that reads `AGENTS.md`) reliable on any kind of project: mobile (iOS, Android, React Native, Flutter), frontend, backend, libraries and CLIs, or anything else. It works with OpenSpec, with a built-in minimal spec flow, or with no specs at all.

The kit gives you: one short `AGENTS.md` map, architecture rules enforced by a linter, one verify command for every stack, separate **planner / reviewer / implementer / evaluator / code-reviewer** roles, mechanical gates for CI, and a lessons log that turns every agent mistake into a permanent fix.

Install

unzip agent-harness-kit.zip && cd agent-harness-kit
./install.sh /path/to/your/project            # everything auto-detected

Common variations:

./install.sh ~/app --spec none                          # no specs, lightest process
./install.sh ~/app --spec native --stacks ios,backend   # built-in spec flow, explicit stacks
./install.sh ~/app --spec openspec --setup-openspec     # integrate with OpenSpec
./install.sh ~/app --tools claude --ci none             # only Claude wrappers, no CI files
./install.sh ~/app --dry-run                            # preview, write nothing
./install.sh ~/app --upgrade                            # pull kit updates, keep your edits
./install.sh ~/app --uninstall                          # remove unmodified kit files

Prefer not to run a script? `harness-bootstrap-prompt.md` installs exactly the same setup through any coding agent.

Requirements: bash 3.2+ (macOS default is fine), grep, sed, awk, find, git. Windows: use WSL or Git Bash. OpenSpec mode also needs Node and the `openspec` CLI.

Choose your planning mode (`harness/harness.conf`)

Mode	What it is	Pick it when
openspec	OpenSpec owns specs and changes. The kit adds two artifacts (review, test-plan) via a forked schema, plus gates. Default when `o