fable-skills 是一个包含 35 个可组合指令文件的库,这些指令编码了资深工程师的工作习惯(如根本原因调试、安全反射、边界情况扫描),旨在将任何 LLM 的输出提升到 Fable 级别的严谨性,无论底层模型是什么。

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MIT

最近更新

2026-07-10

AI 仓库情报摘要
FR-AI / ANALYSIS

为什么值得关注

它提供了可审计、有基准测试的证据(每单元 5 次盲评),证明向轻量模型(如 Sonnet 5)添加这些技能提示后,其表现可以匹配甚至超越更强模型(如 Opus 4.8)的裸跑结果,通过显式习惯而非模型规模来减少方差并缩小模型差距。

适合谁使用

  • 使用 Claude Code 或类似 LLM 驱动编码工具的开发者
  • 部署 LLM 代理进行代码审查、调试和规划的工程团队
  • 对提示组合与模型对齐感兴趣的 AI 研究人员
  • 评估结构化与临时性 LLM 输出质量的高级工程师

典型使用场景

  • 通过激活安全性和正确性技能来提升代码审查的全面性
  • 使用可复现的检查清单引导 LLM 进行结构化根本原因调试
  • 在处理金融或并发逻辑时强制进行边界情况和数值正确性检查
  • 让更便宜的模型在特定任务上产出与更昂贵模型相当的工作成果

项目优势

  • 经过盲评基准测试,并提供完整审计追踪(62 个原始输出、答案键、评分提示)
  • 技能文件小、可组合,且按需启动——无需巨型提示
  • 在多种模型和任务领域(调试、并发、边界情况)均证明有效
  • 减少输出方差,使结果更加一致和可预测

使用前须知

  • 基准测试每单元仅 n=5——具有方向性但非统计结论
  • 即使使用技能,最微妙的洞察(例如 JSON null 缓存防护)仍需要最强大的模型
  • 评分由 LLM 基于客观检查清单进行,而非人类专家

README 快速开始

fable-skills

A library of 35 engineering-discipline skills — small, composable instruction files that encode how a careful senior engineer works, not what any particular framework does.

The premise

The most capable Claude models don't just know more — they work more carefully. Fable 5 reaches for a codebase's own conventions before writing, proves a bug's cause before fixing it, sweeps edge cases before declaring done, and reports what it actually verified rather than what it assumes. A strong-but-lighter model like Opus 4.8 can do all of that too — it just doesn't always reach for those habits unprompted.

These skills close that gap. Fable identified the places where a less deliberate run tends to fall short of its own ceiling — orientation, root-cause discipline, security reflexes, edge-case coverage, honest reporting — and wrote each habit down as an explicit, always-available checklist. Load them into a session and a model follows the discipline on purpose instead of leaving it to chance. The goal is simple: Fable-level output from whatever model is driving.

Each skill is one focused habit. They fire situationally — a debugging task pulls in root-cause-debugging, a diff touching user input pulls in security-reflexes, a schema change pulls in data-migration-safety — so the model carries the right discipline into the right moment without drowning in guidance.

Does it actually help? Benchmarks

Same method throughout: run an identical task through fresh agents with no guidance vs. with the relevant skill files, then score the outputs against a fixed answer key. Benchmark 1 uses Opus 4.8; Benchmark 2 runs both Opus 4.8 and Sonnet 5. These are directional signals, not statistical proofs.

The full assets are in benchmark/ — seeded tasks, answer keys, all 62 raw run outputs, the blind-grader prompts, and the per-item score tables — so every number below is auditable and re-gradable rather than take-my-word-for-it. (They were reconstructed verbatim from the original session transcript; each file carries a provenance header, and the recovery manifest in benchmark/README.md lists the known gaps.)

Benchmark 1 — Security code review (n=1, blind-graded)

The same task was run through two fresh agents and both reviews were scored blind by an independent third agent. Task: review a Python ord

项目描述

35 engineering-discipline skills authored by fable 5, with a blind-graded benchmark: sonnet 5 loaded with the skills beat opus 4.8 running bare. no deps, mit.

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