Master skill — set up the full agent harness for any repo so an agent can work it reliably: legible (map-not-manual docs + custom lints), executable (one-command dev stack), verifiable (e2e gate + a…
$ npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install AI-Builder-Club/skills setup-codebase-harness --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/AI-Builder-Club/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/setup-codebase-harness .claude/skills/setup-codebase-harness && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "setup-codebase-harness" agent skill from https://github.com/AI-Builder-Club/skills/tree/main/skills/setup-codebase-harness into .claude/skills/setup-codebase-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "setup-codebase-harness", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/AI-Builder-Club/skills/tree/main/skills/setup-codebase-harnessType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install AI-Builder-Club/skills setup-codebase-harness --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AI-Builder-Club/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/setup-codebase-harness .agents/skills/setup-codebase-harness && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "setup-codebase-harness" agent skill from https://github.com/AI-Builder-Club/skills/tree/main/skills/setup-codebase-harness into .agents/skills/setup-codebase-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "setup-codebase-harness", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install AI-Builder-Club/skills setup-codebase-harness --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AI-Builder-Club/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/setup-codebase-harness .cursor/skills/setup-codebase-harness && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "setup-codebase-harness" agent skill from https://github.com/AI-Builder-Club/skills/tree/main/skills/setup-codebase-harness into .cursor/skills/setup-codebase-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "setup-codebase-harness", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/AI-Builder-Club/skills.git --path skills/setup-codebase-harness--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install AI-Builder-Club/skills setup-codebase-harness --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AI-Builder-Club/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/setup-codebase-harness .gemini/skills/setup-codebase-harness && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "setup-codebase-harness" agent skill from https://github.com/AI-Builder-Club/skills/tree/main/skills/setup-codebase-harness into .gemini/skills/setup-codebase-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "setup-codebase-harness", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install AI-Builder-Club/skills setup-codebase-harnessInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/AI-Builder-Club/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/setup-codebase-harness .github/skills/setup-codebase-harness && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "setup-codebase-harness" agent skill from https://github.com/AI-Builder-Club/skills/tree/main/skills/setup-codebase-harness into .github/skills/setup-codebase-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "setup-codebase-harness", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install AI-Builder-Club/skills setup-codebase-harness --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AI-Builder-Club/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/setup-codebase-harness .opencode/skills/setup-codebase-harness && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "setup-codebase-harness" agent skill from https://github.com/AI-Builder-Club/skills/tree/main/skills/setup-codebase-harness into .opencode/skills/setup-codebase-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "setup-codebase-harness", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
setup-codebase-harnessMaster skill — set up the full agent harness for any repo so an agent can work it reliably: legible (map-not-manual docs + custom lints), executable (one-command dev stack), verifiable (e2e gate + a…
Setup Codebase Harness is an agent skill from AI-Builder-Club/skills. Master skill — set up the full agent harness for any repo so an agent can work it reliably: legible (map-not-manual docs + custom lints), executable (one-command dev stack), verifiable (e2e gate + a verify-before-ship loop), plus commit hygiene and entropy control. Use when onboarding a new/unfamiliar codebase to agent-driven development — "set up the harness", "make this repo agent-ready", "harness this codebase".
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Testing & QA, covering Linting and formatting and End-to-end testing. The repository describes itself as: Codebase harness + loop engineer.
5 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit 917780c. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Links to these hosts (documentation or services it may open):
github.comFrom URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Setup Codebase Harness loads about 1.4k tokens when it runs. Until then it costs about 110 tokens; SKILL.md has 696 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
Without a licence we can't republish the file, so here is its outline and opening line. It has 696 words (~1,417 tokens).
“Harness engineering: the model is fixed — what you engineer is the scaffolding around it (the environment, the docs, the feedback loops) so an agent can build and verify software with minimal human attention. Humans steer; agents execute. Your job…”
Just SKILL.md in skills/setup-codebase-harness of AI-Builder-Club/skills.
Open the folder on GitHubat commit 917780c
Setup Codebase Harness next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Setup Codebase Harness this skillAI-Builder-Club/skills | 1.3k | — | ~1.4k | Automated safety check: Pass | None | |
| Acceptance Test Authoringintent-driven-dev/intent-driven-template | 161 | — | ~2k | Automated safety check: Pass | MIT | |
| Odc DebuggingDouglasNeuroInformatics/OpenDataCapture | 119 | — | ~2.8k | Automated safety check: Notes | Apache-2.0 | |
| Verifyjh941213/my-cc-harness | 125 | — | ~1.1k | Automated safety check: Notes | None | |
| Pierre Testing and Verification Guidepierrecomputer/pierre | 6.3k | — | ~608 | Automated safety check: Pass | Apache-2.0 | |
| Ha Frontend Testinghome-assistant/frontend | 5.7k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 |
intent-driven-dev/intent-driven-template
A skill your agent uses when creating or modifying acceptance tests, configuring cucumber-js or behave runners, writing or refactoring step definitions, linting executable Gherkin specs, choosing an…
DouglasNeuroInformatics/OpenDataCapture
What actually breaks in Open Data Capture — a failing build, lint, unit test or e2e run; a change with no visible effect; a suite that stays green after you broke the code on purpose; an error…
jh941213/my-cc-harness
Code verification after task completion (typecheck, lint, test, build).
pierrecomputer/pierre
Chooses the right verification step after a code change in Pierre's monorepo: format and lint, a typecheck, Bun unit tests, snapshots, or Playwright E2E.
home-assistant/frontend
Home Assistant frontend testing and validation workflow. An agent skill from home-assistant/frontend.
ploxc/modbux
Run the checklist before committing or merging — read the diff, lint, typecheck, the unit suite, the e2e specs the change touches, then report and commit.
AI-Builder-Club/skills
Create animated flow diagrams from articles, workflow notes, architecture sketches, or process descriptions using a JSON specification and a local Python/Pillow renderer.
AI-Builder-Club/skills
Generate TikTok/Shorts-style karaoke captions using MLX Whisper, ASS subtitles, and FFmpeg libass.
AI-Builder-Club/skills
Delegate tasks to ANY CLI agent (claude, codex, aider, ...) running in a detached tmux session, with a race-safe done-signal protocol and multi-turn iteration.
AI-Builder-Club/skills
Spin up a new loop (domain) in a file-based knowledge base — bootstrap the substrate if it's missing, gather the loop's charter, scaffold domains/<loop/README.md, then do ONE real test run and…
AI-Builder-Club/skills
Scaffold an isolated CLOUD dev box per agent (via crabbox + Daytona) for any codebase — the parallel-safe counterpart to dev-local-setup.
AI-Builder-Club/skills
A skill your agent uses when deciding WHERE to point SEO effort, not how to write a page.
Categories
Master skill — set up the full agent harness for any repo so an agent can work it reliably: legible (map-not-manual docs + custom lints), executable (one-command dev stack), verifiable (e2e gate + a…. Setup Codebase Harness is an agent skill from AI-Builder-Club/skills. Master skill — set up the full agent harness for any repo so an agent can work it reliably: legible (map-not-manual docs + custom lints), executable (one-command dev stack), verifiable (e2e gate + a verify-before-ship loop), plus commit hygiene and entropy control.
Setup Codebase Harness fits situations like: onboarding a new/unfamiliar codebase to agent-driven development — set up the harness; make this repo agent-ready; harness this codebase.
Run `npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a claude-code`. Or copy the skill folder (skills/setup-codebase-harness in AI-Builder-Club/skills) into .claude/skills/setup-codebase-harness in your project. Claude Code loads it when a task matches its description.
Run `npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a codex`. Or copy the skill folder (skills/setup-codebase-harness in AI-Builder-Club/skills) into .agents/skills/setup-codebase-harness in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add AI-Builder-Club/skills --skill setup-codebase-harness -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/setup-codebase-harness, .gemini/skills/setup-codebase-harness, .github/skills/setup-codebase-harness and .opencode/skills/setup-codebase-harness in your project.
SKILL.md names no scripts, command-line tools or credentials: Setup Codebase Harness is instructions for the agent only. Our summary lists: Docker.
SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
No licence was found for Setup Codebase Harness or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
About 1.4k tokens (SKILL.md is roughly 5.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Setup Codebase Harness: Acceptance Test Authoring (intent-driven-dev/intent-driven-template, 161 stars), Odc Debugging (DouglasNeuroInformatics/OpenDataCapture, 119 stars), Verify (jh941213/my-cc-harness, 125 stars) and Pierre Testing and Verification Guide (pierrecomputer/pierre, 6.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
AI-Builder-Club (a GitHub organization) maintains it in AI-Builder-Club/skills, which has 1,288 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on September 15, 2026.
Source: AI-Builder-Club/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.
