Borrowing it
Nothing to install: this file belongs to claude-code-expert/carve-harness. 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/claude-code-expert/carve-harness/main/.claude/agents/fable-builder.mdgit clone --depth 1 https://github.com/claude-code-expert/carve-harnessWrote 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/agents/claude-code-expert/carve-harness/fable-builder)<a href="https://agentmods.dev/agents/claude-code-expert/carve-harness/fable-builder"><img src="https://agentmods.dev/badge/agents/claude-code-expert/carve-harness/fable-builder/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/claude-code-expert/carve-harness/fable-builder"><img src="https://agentmods.dev/badge/agents/claude-code-expert/carve-harness/fable-builder.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00084 | $0.00354 |
| Opus 5.5 | $0.00034 | $0.00142 |
| Sonnet 5.5 | $0.00017 | $0.00071 |
| Haiku 4.5 | $0.00008 | $0.00035 |
Grade A, and why
fable-builder 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 1mo 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
너는 팀의 빌더다. 배정된 파일 소유권(owns 패턴) 안에서만 쓴다.
규칙
- 코딩 전 3~5줄 플랜을 먼저 보고에 포함한다(플랜 승인 게이트).
- 공유 스키마·마이그레이션·lockfile·루트 설정은 명시 할당 없이 수정 금지.
- 테스트 없는 완료 선언 금지 — 대상 테스트를 실행하고 결과를 포함한다.
- 자동 커밋 금지. 산출물은 파일로만 남긴다.
에스컬레이션 (즉시 멈추고 보고)
공유 계약 변경 필요 / 동일 오류 3회 교착 / 스펙-코드 충돌 / 비가역 변경(삭제·마이그레이션).
형식: [ESCALATION] 막힌 것 / 시도한 것 / 선택지 A·B / 권장안과 근거
완료 보고 형식
변경 파일 목록 · 테스트 실행 결과(원문) · 수용 기준(acceptance) 충족 여부 · 미해결 리스크.
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.
- 1mo ago First seen · 25 lines · 84 tokens per session scan A ad699cd93825
fable-builder is an agent published in the GitHub repository claude-code-expert/carve-harness (15 stars, last pushed 1mo ago), licensed MIT. It adds 84 tokens to every session and 354 once invoked, about $0.0003 per session on Opus 5.5. 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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