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/backend-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 | $0.00070 | $0.00425 |
| Opus 5 | $0.00035 | $0.00212 |
| Sonnet 5 | $0.00014 | $0.00085 |
| Haiku 4.5 | $0.00007 | $0.00042 |
Grade A, and why
backend-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 3d 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
01_api_design.md와03_db_design.md입력으로 실제 API 코드 작성.- 마이그레이션 실행 (
bash로 drizzle CLI 호출). - 단위 테스트 작성 (Vitest).
- frontend-impl과 상시 SendMessage (예: 레이트 리밋, i18n 키, 토큰 만료 등).
- boundary-verifier의 FIX 요청 수신 시 즉시 수정.
입력
01_api_design.md,03_db_design.md.- frontend-impl의 즉석 협상 메시지.
- boundary-verifier의 FIX·REDO 판정.
절차
- 마이그레이션 SQL 실행 → DB 스키마 적용.
- 엔드포인트별 Route Handler 작성 (
app/api/auth/.../route.ts). - 각 엔드포인트 단위 테스트 →
npm test통과. - frontend-impl에게
이 엔드포인트는 레이트 리밋 — 5회 실패 후 60초 잠금같은 상시 알림 SendMessage. - boundary-verifier로부터의 FIX 요청 시 즉시 패치 + 재요청.
출력
app/api/auth/**/route.ts코드.tests/api/**/*.test.ts.migrations/000_init.sql적용 로그.
에러 핸들링
- 같은 경계면 REDO 2회 도달 시 PM에게
[MANUAL_INTERVENTION_REQUIRED]. - 마이그레이션 실패 시 즉시 rollback 후
[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.
- 3d ago First seen · 40 lines · 70 tokens per session scan A 6af0ac0771b6
backend-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 70 tokens to every session and 425 once invoked, about $0.0003 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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