Vercel Composition Patterns
supabase/supabase
React composition patterns that scale. An agent skill from supabase/supabase.
Run the diagnostic Harness Doctor workflow. An agent skill from harnessworks/harness-starter-kit.
Install Harness Doctor
$ npx skills add harnessworks/harness-starter-kit --skill harness-doctor -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install harnessworks/harness-starter-kit harness-doctor --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/harnessworks/harness-starter-kit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agent-skills/skills/harness-doctor .claude/skills/harness-doctor && 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 "harness-doctor" agent skill from https://github.com/harnessworks/harness-starter-kit/tree/main/agent-skills/skills/harness-doctor into .claude/skills/harness-doctor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "harness-doctor", 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/harnessworks/harness-starter-kit/tree/main/agent-skills/skills/harness-doctorType 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 harnessworks/harness-starter-kit --skill harness-doctor -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install harnessworks/harness-starter-kit harness-doctor --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/harnessworks/harness-starter-kit.git skills-src && mkdir -p .agents/skills && cp -r skills-src/agent-skills/skills/harness-doctor .agents/skills/harness-doctor && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "harness-doctor" agent skill from https://github.com/harnessworks/harness-starter-kit/tree/main/agent-skills/skills/harness-doctor into .agents/skills/harness-doctor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "harness-doctor", 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 harnessworks/harness-starter-kit --skill harness-doctor -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install harnessworks/harness-starter-kit harness-doctor --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/harnessworks/harness-starter-kit.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/agent-skills/skills/harness-doctor .cursor/skills/harness-doctor && 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 "harness-doctor" agent skill from https://github.com/harnessworks/harness-starter-kit/tree/main/agent-skills/skills/harness-doctor into .cursor/skills/harness-doctor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "harness-doctor", 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/harnessworks/harness-starter-kit.git --path agent-skills/skills/harness-doctor--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 harnessworks/harness-starter-kit --skill harness-doctor -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install harnessworks/harness-starter-kit harness-doctor --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/harnessworks/harness-starter-kit.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/agent-skills/skills/harness-doctor .gemini/skills/harness-doctor && 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 "harness-doctor" agent skill from https://github.com/harnessworks/harness-starter-kit/tree/main/agent-skills/skills/harness-doctor into .gemini/skills/harness-doctor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "harness-doctor", 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 harnessworks/harness-starter-kit harness-doctorInstalls 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 harnessworks/harness-starter-kit --skill harness-doctor -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/harnessworks/harness-starter-kit.git skills-src && mkdir -p .github/skills && cp -r skills-src/agent-skills/skills/harness-doctor .github/skills/harness-doctor && 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 "harness-doctor" agent skill from https://github.com/harnessworks/harness-starter-kit/tree/main/agent-skills/skills/harness-doctor into .github/skills/harness-doctor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "harness-doctor", 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 harnessworks/harness-starter-kit --skill harness-doctor -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install harnessworks/harness-starter-kit harness-doctor --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/harnessworks/harness-starter-kit.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/agent-skills/skills/harness-doctor .opencode/skills/harness-doctor && 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 "harness-doctor" agent skill from https://github.com/harnessworks/harness-starter-kit/tree/main/agent-skills/skills/harness-doctor into .opencode/skills/harness-doctor/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "harness-doctor", 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.
Facts
- Skill name
harness-doctor- GitHub stars
- 115
- Token cost
- ~226 tokens
- SKILL.md length
- 71 words
- Files
- 2
- Skills in repo
- 6
- Repo updated
- First seen
- Licence
- MIT
At a glance
Run the diagnostic Harness Doctor workflow. An agent skill from harnessworks/harness-starter-kit.
- Works in 6 steps: Read ../../references/package-contract.md. → Read ../../references/doctor-workflow.md. → If… → …
- The user asks for /harness doctor
- SKILL.md covers Steps and Boundaries
- Calls python
What it does
Harness Doctor is an agent skill from harnessworks/harness-starter-kit. Run the diagnostic Harness Doctor workflow. Use when the user asks for /harness doctor, harness score, repository harness readiness, or a no-edit harness health report.
Its SKILL.md is about 230 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Development. The repository describes itself as: 🐴 Prompt-first harness engineering for safer AI coding agent workflows. The licence is MIT.
When your agent uses it
- The user asks for /harness doctor
- Repository harness readiness
- A no-edit harness health report
Example prompts
- “/harness-doctor”
Requirements
- Python 3
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Read ../../references/package-contract.md.
- Read ../../references/doctor-workflow.md.
- If ./harness-starter-kit/commands/harness-doctor.md exists in the target,
- Inspect durable repository evidence.
- Run python scripts/harness_doctor.py --target . when available.
- Produce the Harness Doctor Report.
What it can do on your machine
Read from SKILL.md and the folder at commit 62437be. It shows what the files ask for, not the result of running them.
Tool permissions
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.
Runs code
Shell commands in SKILL.md call:
python
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Harness Doctor loads about 226 tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 71 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.
Safety
Auto-check passed
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.
SKILL.md
The full file from harnessworks/harness-starter-kit at commit 62437be, republished under its MIT licence (© harnessworks). 71 words, ~226 tokens.
Download SKILL.mdSave it as
.claude/skills/harness-doctor/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- harness-doctor
- description
- Run the diagnostic Harness Doctor workflow. Use when the user asks for /harness doctor, harness score, repository harness readiness, or a no-edit harness health report.
- argument-hint
- [target path]
Harness Doctor
Evaluate repository harness health without modifying files.
Steps
- Read
../../references/package-contract.md. - Read
../../references/doctor-workflow.md. - If
./harness-starter-kit/commands/harness-doctor.mdexists in the target, prefer that canonical workflow. - Inspect durable repository evidence.
- Run
python scripts/harness_doctor.py --target .when available. - Produce the Harness Doctor Report.
Boundaries
- Do not create, edit, delete, move, format, or stage files.
- Do not remove a nested
./harness-starter-kitdirectory. - Score repository-visible harness health, not claimed agent effectiveness.
© harnessworks, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in agent-skills/skills/harness-doctor of harnessworks/harness-starter-kit.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit 62437be
Compare with similar skills
Harness Doctor 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 |
|---|---|---|---|---|---|---|
| Harness Doctor this skillharnessworks/harness-starter-kit | 115 | — | ~226 | Automated safety check: Pass | MIT | |
| Vercel Composition Patternssupabase/supabase | 111k | 58 repos | ~726 | Automated safety check: Pass | MIT | |
| Finishing a Development Branchobra/superpowers | 297k | 5 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Typescript Advanced Typesrolling-scopes/rsschool-app | 10k | 25 repos | ~4.2k | Automated safety check: Pass | MPL-2.0 | |
| PR Babysitteropeninterpreter/openinterpreter | 69k | 3 repos | ~4.2k | Automated safety check: Pass | Apache-2.0 | |
| Code Review ChecklistshareAI-lab/learn-claude-code | 78k | 4 repos | ~1.1k | Automated safety check: Pass | MIT |
Similar skills
- Official
Finishing a Development Branch
obra/superpowers
Walks the last step of a branch: confirm tests pass, detect the git environment, ask how to integrate, carry out your choice and clean up the worktree.
Typescript Advanced Types
rolling-scopes/rsschool-app
Master TypeScript's advanced type system including generics, conditional types, mapped types, template literals, and utility types for building type-safe applications.
PR Babysitter
openinterpreter/openinterpreter
Watches an open GitHub pull request until it merges, handling review comments, diagnosing CI failures and retrying flaky checks along the way.
Code Review Checklist
shareAI-lab/learn-claude-code
Reviews code against a five-part checklist covering security, correctness, performance, maintainability and testing, and reports findings in a fixed format.
Greploop
onyx-dot-app/onyx
Iteratively improves a PR (GitHub), MR (GitLab), or shelved changelist (Perforce) until Greptile gives it a 5/5 confidence score with zero unresolved comments.
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Review stale, duplicated, obsolete, or unused target harness guidance.
Harness Review
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Review the current change set from an opposing harness-engineering perspective.
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Refresh an adopted target repository from the latest Harness Starter Kit reference.
Related
Categories
Questions about Harness Doctor
What does Harness Doctor do?
Run the diagnostic Harness Doctor workflow. An agent skill from harnessworks/harness-starter-kit. Harness Doctor is an agent skill from harnessworks/harness-starter-kit. Run the diagnostic Harness Doctor workflow.
When should I use Harness Doctor?
Harness Doctor fits situations like: the user asks for /harness doctor; repository harness readiness; A no-edit harness health report.
How do I install Harness Doctor in Claude Code?
Run `npx skills add harnessworks/harness-starter-kit --skill harness-doctor -a claude-code`. Or copy the skill folder (agent-skills/skills/harness-doctor in harnessworks/harness-starter-kit) into .claude/skills/harness-doctor in your project. Claude Code loads it when a task matches its description.
How do I install Harness Doctor in Codex?
Run `npx skills add harnessworks/harness-starter-kit --skill harness-doctor -a codex`. Or copy the skill folder (agent-skills/skills/harness-doctor in harnessworks/harness-starter-kit) into .agents/skills/harness-doctor in your project. Codex loads it when a task matches its description.
Can I use Harness Doctor in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add harnessworks/harness-starter-kit --skill harness-doctor -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/harness-doctor, .gemini/skills/harness-doctor, .github/skills/harness-doctor and .opencode/skills/harness-doctor in your project.
What does Harness Doctor need to run?
Going by SKILL.md and its folder, Harness Doctor needs the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Harness Doctor access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Harness Doctor safe to install?
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.
What licence does Harness Doctor use?
Harness Doctor is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Harness Doctor use?
About 226 tokens (SKILL.md is roughly 904 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Harness Doctor?
Skills that share tags, products or a category with Harness Doctor: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 297k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Harness Doctor?
harnessworks (a GitHub organization) maintains it in harnessworks/harness-starter-kit, which has 115 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on June 18, 2026.
Source: harnessworks/harness-starter-kit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.