A setup command that adds harness-kit files and checks to an existing project. A harness is a set of project rules, plans, and verification steps for guiding and checking coding work.

Use it to initialize harness-kit, identify the project type and language, create configuration and planning documents, and enable a pre-commit check.

It creates a consistent starting structure and helps prevent existing project settings from being overwritten accidentally.

init — Skill by whieet

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add skills/whieet/harness-kit/init

Any agent

npx skills add whieet/harness-kit --skill init

Clone the repo

git clone --depth 1 https://github.com/whieet/harness-kit

Made for: Claude Code, Codex.

Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,331 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5	$0.00098	$0.01331
Opus 5	$0.00049	$0.00665
Sonnet 5	$0.00020	$0.00266
Haiku 4.5	$0.00010	$0.00133

Measured 2d ago against content hash bae64c27b6fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

init scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/init/SKILL.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/harness-kit:init

Set up the harness in this repository. Be careful and idempotent — never clobber a user's existing .harness/config.json unless they explicitly ask to reset.

Steps

Ask for the project language first.
- If the user's message explicitly includes --lang en, --lang zh, English/en, or Chinese/中文/zh, use that explicit choice.
- Otherwise always ask language before any repo probing or project-type question with the AskUserQuestion tool: 中文 (zh) | English (en). Do not infer from the current conversation and do not proceed without a language choice.
- Once chosen, use that language for every subsequent explanation, question, and generated document in this init flow.
- This preference is persisted in .harness/config.json as language and can be changed later. It controls AI-facing guidance and generated document content; file/directory names, command names, and config keys stay untranslated.
Decide the project type using the selected language.
- If the user's message names a type (godot, web, or custom), use it.
- Otherwise probe the repo:
  - test -f project.godot → godot
  - test -f package.json and it depends on react/vue/vite/next/svelte (grep package.json) → web
- If exactly one matches, state the detected type in the selected language and proceed.
- If both or neither match, ask the user with the AskUserQuestion tool in the selected language: custom | godot | web. Do not silently guess.
Run the scaffolder (it does all file writes deterministically and idempotently):
```
harness-init <type> --lang <en|zh>
```
- Add --force only if the user explicitly asked to reset/overwrite an existing config.
- Add --no-claude-md if the user doesn't want a CLAUDE.md constitution.
- harness-init is on PATH (bundled in the plugin's bin/). If the shell can't find it, the plugin may not be enabled — tell the user to run /plugin install harness-kit.

Read the full file on GitHub · 57 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2d ago First seen · 57 lines · 98 tokens per session scan A bae64c27b6fb

Subscribe to this mod's changes

init is a skill published in the GitHub repository whieet/harness-kit (5 stars, last pushed 1mo ago), licensed MIT. It adds 98 tokens to every session and 1,331 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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init