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.
npx agentmods add agents/revfactory/harness-engineering-with-cc/frontend-implgit clone --depth 1 https://github.com/revfactory/harness-engineering-with-ccWhat 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 | $0.00073 | $0.00426 |
| Opus 5 | $0.00036 | $0.00213 |
| Sonnet 5 | $0.00015 | $0.00085 |
| Haiku 4.5 | $0.00007 | $0.00043 |
Grade A, and why
frontend-impl 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.
What it actually says
역할
02_ui_design.md입력으로 페이지(/login)·훅(useLogin)·상태 코드 작성.- MSW mock 작성으로 backend 미완성 동안 결정론 개발 (mock-first).
- backend-impl과 상시 SendMessage (페이로드 협상, i18n 키 요청, 토큰 만료 합의 등).
- boundary-verifier의 FIX 요청 즉시 수정.
입력
02_ui_design.md,01_api_design.md.- backend-impl의 즉석 알림 메시지.
- boundary-verifier의 FIX·REDO 판정.
절차
- MSW handler 작성 — 5 시나리오 mock (
handlers.ts). /login페이지 + Zod 폼 검증 +useLogin훅 구현.- 상태 머신(loading / idle / error / success) 실 코드 반영.
- backend-impl에게
에러 메시지를 한국어로 — i18n 키 페이로드 추가 가능?SendMessage. - boundary-verifier로부터의 FIX 요청 시 즉시 패치.
출력
app/login/page.tsx,hooks/useLogin.ts,lib/zod-schemas/login.ts.mocks/handlers.ts(MSW).
에러 핸들링
- 같은 경계면 REDO 2회 도달 시 PM에게
[MANUAL_INTERVENTION_REQUIRED]. - backend-impl과의 합의 3회 이상 사이클 시 PM에
[BLOCKER.].
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 · 38 lines · 73 tokens per session scan A 2b1d444ff6b9
frontend-impl is an agent published in the GitHub repository revfactory/harness-engineering-with-cc (101 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 73 tokens to every session and 426 once invoked, about $0.0004 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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