Vercel Composition Patterns
supabase/supabase
React composition patterns that scale. An agent skill from supabase/supabase.
mini-harness · a supplementary layer over Claude Code and Codex — tags the task, runs online-researcher / diversifier / devils-advocate in addition to the native flow when a trigger fires, keeps a…
Install Mini Harness
$ npx skills add HangYu8123/mini-harness --skill mini-harness -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install HangYu8123/mini-harness mini-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/HangYu8123/mini-harness.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/mini-harness .claude/skills/mini-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 "mini-harness" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/mini-harness into .claude/skills/mini-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mini-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/HangYu8123/mini-harness/tree/main/skills/mini-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 HangYu8123/mini-harness --skill mini-harness -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install HangYu8123/mini-harness mini-harness --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/mini-harness .agents/skills/mini-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 "mini-harness" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/mini-harness into .agents/skills/mini-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mini-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 HangYu8123/mini-harness --skill mini-harness -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install HangYu8123/mini-harness mini-harness --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/mini-harness .cursor/skills/mini-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 "mini-harness" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/mini-harness into .cursor/skills/mini-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mini-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/HangYu8123/mini-harness.git --path skills/mini-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 HangYu8123/mini-harness --skill mini-harness -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install HangYu8123/mini-harness mini-harness --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/mini-harness .gemini/skills/mini-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 "mini-harness" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/mini-harness into .gemini/skills/mini-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mini-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 HangYu8123/mini-harness mini-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 HangYu8123/mini-harness --skill mini-harness -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/mini-harness .github/skills/mini-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 "mini-harness" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/mini-harness into .github/skills/mini-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mini-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 HangYu8123/mini-harness --skill mini-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 HangYu8123/mini-harness mini-harness --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HangYu8123/mini-harness.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/mini-harness .opencode/skills/mini-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 "mini-harness" agent skill from https://github.com/HangYu8123/mini-harness/tree/main/skills/mini-harness into .opencode/skills/mini-harness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mini-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.
Facts
- Skill name
mini-harness- GitHub stars
- 199
- Token cost
- ~1.4k tokens
- SKILL.md length
- 632 words
- Files
- 3
- Skills in repo
- 8
- Repo updated
- First seen
- Licence
- None found
At a glance
mini-harness · a supplementary layer over Claude Code and Codex — tags the task, runs online-researcher / diversifier / devils-advocate in addition to the native flow when a trigger fires, keeps a…
- Keeps a repo memory the agent may consult
- SKILL.md covers Subcommands — the first word… and A request
- Runs Shell and Python scripts from its folder; calls bash and python3
- Records the trajectory
What it does
Mini Harness is an agent skill from HangYu8123/mini-harness. mini-harness · a supplementary layer over Claude Code and Codex — tags the task, runs online-researcher / diversifier / devils-advocate in addition to the native flow when a trigger fires, keeps a repo memory the agent may consult, and records the trajectory. Use only when the user invokes it (/mini-harness · $mini-harness) or it is active in this repo.
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `mh.sh` and `mh_usage.py`).
It sits in Development. The repository describes itself as: A local minimized harness, with simplified output and logs for self-evolve.
When your agent uses it
- Keeps a repo memory the agent may consult
- Records the trajectory
- Invokes it (/mini-harness · $mini-harness)
- It is active in this repo
Example prompts
- “/mini-harness”
Requirements
- Python 3
- A Bash shell
What it can do on your machine
Read from SKILL.md and the folder at commit baa821f. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships script files (Shell and Python), which the agent can run.
Shell commands in SKILL.md call:
bashpython3
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Mini Harness loads about 1.4k tokens when it runs. Until then it costs about 92 tokens; SKILL.md has 632 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 632 words (~1,394 tokens).
“Helper: bash "${CLAUDE_SKILL_DIR}/mh.sh" — Claude Code fills the variable; on Codex ${CLAUDE_SKILL_DIR} is this SKILL.md's own folder (.agents/skills/mini-harness standalone, the plugin's skills/mini-harness otherwise). It resolves the workspace root (first directory at or above the cwd with .harness/ or .git) and…”
- name
- mini-harness
- disable-model-invocation
- true
- argument-hint
- on | off | status | doctor | usage [--compare on.json off.json | --rates file | finalize] | routes <words> | effort <level|save|restore|reset> … | subagents…
Files
SKILL.md and 2 other files in skills/mini-harness of HangYu8123/mini-harness.
- SKILL.md
- mh.sh
- mh_usage.py
Open the folder on GitHubat commit baa821f
Compare with similar skills
Mini 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 |
|---|---|---|---|---|---|---|
| Mini Harness this skillHangYu8123/mini-harness | 199 | — | ~1.4k | Automated safety check: Pass | None | |
| 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 | 5 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.
More from HangYu8123/mini-harness
All 8 skills in this repoBreakdown PR
HangYu8123/mini-harness
Plan and optionally execute a large pull request split into small stacked PRs.
Code Review And Quality
HangYu8123/mini-harness
Multi-axis, review-only code review of a diff across six axes — request achievement, correctness, readability/simplicity, architecture, security, and performance — with severity-labelled findings.
Code Simplification
HangYu8123/mini-harness
Simplify code for clarity while preserving exact behavior — reduce nesting, split long functions, remove redundancy and dead code, and fix unclear names.
Mh Init
HangYu8123/mini-harness
mini-harness · initialize or re-initialize a repo's memory under .harness/repoinfo/ with a multi-agent pass — three-perspective codebase overview, ranked scripts map, issue scan, git-seeded update…
Mh Loop
HangYu8123/mini-harness
mini-harness · repeat a pass toward a verifiable goal until a check passes or a safety stop fires — spec → validate → confirm → loop (pass · observe · exit check · ledger) → review → record.
Mh Wiki
HangYu8123/mini-harness
mini-harness · consolidate execution trajectories (.harness/exectraj/) into repoinfo/harnesseffect.md — which parts of the harness helped or hurt, root causes, and one proposed change at a time.
Related
Categories
Questions about Mini Harness
What does Mini Harness do?
mini-harness · a supplementary layer over Claude Code and Codex — tags the task, runs online-researcher / diversifier / devils-advocate in addition to the native flow when a trigger fires, keeps a…. Mini Harness is an agent skill from HangYu8123/mini-harness. mini-harness · a supplementary layer over Claude Code and Codex — tags the task, runs online-researcher / diversifier / devils-advocate in addition to the native flow when a trigger fires, keeps a repo memory the agent may consult, and records the trajectory.
When should I use Mini Harness?
Mini Harness fits situations like: keeps a repo memory the agent may consult; records the trajectory; invokes it (/mini-harness · $mini-harness); it is active in this repo.
How do I install Mini Harness in Claude Code?
Run `npx skills add HangYu8123/mini-harness --skill mini-harness -a claude-code`. Or copy the skill folder (skills/mini-harness in HangYu8123/mini-harness) into .claude/skills/mini-harness in your project. Claude Code loads it when a task matches its description.
How do I install Mini Harness in Codex?
Run `npx skills add HangYu8123/mini-harness --skill mini-harness -a codex`. Or copy the skill folder (skills/mini-harness in HangYu8123/mini-harness) into .agents/skills/mini-harness in your project. Codex loads it when a task matches its description.
Can I use Mini Harness 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 HangYu8123/mini-harness --skill mini-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/mini-harness, .gemini/skills/mini-harness, .github/skills/mini-harness and .opencode/skills/mini-harness in your project.
What does Mini Harness need to run?
Going by SKILL.md and its folder, Mini Harness needs a shell and Python for the scripts in its folder and the command-line tools its instructions call (bash and python3). Our summary lists: Python 3; A Bash shell.
Does Mini Harness 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 Mini Harness 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 Mini Harness use?
No licence was found for Mini Harness or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Mini Harness use?
About 1.4k tokens (SKILL.md is roughly 5.6k 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 Mini Harness?
Skills that share tags, products or a category with Mini Harness: 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 Mini Harness?
HangYu8123 (a GitHub user) maintains it in HangYu8123/mini-harness, which has 199 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on September 22, 2026.
Source: HangYu8123/mini-harness on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.