Borrowing it
Nothing to install: this file belongs to netil/oh-my-hi. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/netil/oh-my-hi/main/CLAUDE.mdgit clone --depth 1 https://github.com/netil/oh-my-hiWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/netil/oh-my-hi/claude-md)<a href="https://agentmods.dev/instructions/netil/oh-my-hi/claude-md"><img src="https://agentmods.dev/badge/instructions/netil/oh-my-hi/claude-md.svg" alt="Measured on agentmods" height="20"></a>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 5.1 | $0.01985 | $0.01985 |
| Opus 5 | $0.00992 | $0.00992 |
| Sonnet 5 | $0.00397 | $0.00397 |
| Haiku 4.5 | $0.00198 | $0.00198 |
Grade A, and why
oh-my-hi CLAUDE.md 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Oh-My-Hi
Claude Code plugin — harness configuration & token usage dashboard.
Tech Stack
- Node.js (ESM), vanilla JS frontend (no framework)
- esbuild for CSS/JS minification
- billboard.js for charts (bundled inline, no CDN)
- Local HTTP server (
scripts/serve.mjs) — no external deps, port 8282
Build & Test
npm run build # Generate output/index.html + data.json (--data-only)
npm test # Run all tests (build, web-ui, plugin)
Build entry: node scripts/generate-dashboard.mjs — full mode generates index.html (shell) + data.js (data) + cache segments. --data-only runs lightweight mode (mtime check → parse changes → update data.js).
Dev Workflow
[절대원칙] 브라우저 탭 단일 유지: 브라우저 탭은 어떤 상황에서도 추가로 열지 않는다. 이미 열려있는 탭이 있으면 반드시 그 탭을 재사용한다. 새 탭 오픈은 lock file이 전혀 없는 진짜 첫 실행 시에만 허용된다.
[절대원칙] 포트 고정: 서버는 항상 8282 포트를 사용한다. 포트가 바뀌는 유일한 예외는 다른 프로세스가 8282를 점유 중일 때뿐이다. 개발 중 서버를 임의로 재시작하지 않는다.
- 서버 시작:
node scripts/serve.mjs --open(최초 1회) - 코드/데이터 변경 후:
node scripts/generate-dashboard.mjs --data-only→ 브라우저 수동 새로고침 spawnServeOrRefresh: lock file 없음 →--open허용 / stale lock file →--open금지 / 서버 살아있음 → URL만 반환
Build Gotcha
Running without node_modules causes __BB_JS__ is not defined errors. Since v0.2.4 dependencies auto-install, but verify npm install first when building manually.
File Structure
scripts/generate-dashboard.mjs # Build script (entry point)
scripts/parsers/*.mjs # 15 data parsers
templates/dashboard.html # HTML shell with placeholders
templates/app.js # Frontend JS (~3700 lines)
templates/styles.css # All CSS
templates/locales/{en,ko}.json # i18n (en default, ko supported)
templates/work-types.json # Task category schema (25 types)
skills/omh/SKILL.md # Plugin skill definition
.claude-plugin/marketplace.json # Marketplace metadata
.claude-plugin/plugin.json # Plugin metadata
test/*.test.mjs # Tests (Node test runner)
output/ # Generated artifacts (gitignored)
data-core.js # Core data (scopes, metadata) — sync load (~515KB)
data-usage.js # Usage data (tokenEntries etc.) — deferred (~9MB)
data.js # Legacy single-file (backwards compat)
cache/ # Incremental cache (gzip segments + mtime index)
pending/ # Lightweight mode deltas (plain JSON)
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.
- 8d ago First seen · 136 lines · 1,985 tokens per session scan A 28b28efbf181
oh-my-hi CLAUDE.md is an instructions file published in the GitHub repository netil/oh-my-hi (56 stars, last pushed 2mo ago), licensed MIT. It adds 1,985 tokens to every session, about $0.0099 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 2026-08-30.
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