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 instructions/skyf0xx/better-thinking/claude-mdgit clone --depth 1 https://github.com/skyf0xx/better-thinkingWrote 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/skyf0xx/better-thinking/claude-md)<a href="https://agentmods.dev/instructions/skyf0xx/better-thinking/claude-md"><img src="https://agentmods.dev/badge/instructions/skyf0xx/better-thinking/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 | $0.00978 | $0.00978 |
| Opus 5 | $0.00489 | $0.00489 |
| Sonnet 5 | $0.00196 | $0.00196 |
| Haiku 4.5 | $0.00098 | $0.00098 |
Grade A, and why
better-thinking 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 6d 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 — 35 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This repo is the source for the better-thinking Claude Code plugin: a library of composable Agent Skills encoding thinking procedures. See README.md for what it is and how it's structured, and CONTRIBUTING.md for the rules a skill must follow (template, atomic vs. composite, token budgets, no personas).
Working in this repo
- Skills are NOT one-directory-per-skill. Most skills — every atomic and composite skill in the library — are flat files at
skills/library/<name>.md. Only the two orchestrators have their own directory +SKILL.md:skills/better-thinking/SKILL.md(the dispatcher) andskills/better-thinking-recipes/SKILL.md(the recipe runner). When looking for a skill by name, checkskills/library/<name>.mdfirst — don't assumeskills/<name>/SKILL.mdor search for a directory that doesn't exist. - Whichever file a skill lives in (
skills/library/<name>.mdorskills/<name>/SKILL.md) is the source of truth for it.skills/INDEX.jsonis a generated-by-hand mirror of every skill's frontmatter that the/better-thinkingdispatcher reads to route — it must stay in sync with the actual files, not the other way around. catalog/*.mdholds full prose specs by category. A spec living incatalog/is not the same as a skill existing — only an actual file underskills/(skills/library/<name>.md, orskills/<name>/SKILL.mdfor the two orchestrators) makes it real. Don't let a catalog entry imply a skill exists when it doesn't.- Library skills (
skills/library/<name>.md) are not independently invocable — Claude Code's harness only exposes top-level plugin skills (better-thinking,better-thinking-recipes) as directly callable. A library skill is only reachable by being routed to:better-thinking's dispatcher picks it viaINDEX.json/ROUTE_INDEX.json, orbetter-thinking-recipesinvokes it as a named dependency of a recipe stage. There's no/interview-synthesis-style direct slash command for a library skill. skills/ROUTE_INDEX.jsonis a generated TF-IDF lexical index (name/one_line/triggers/category/Examples, field-weighted, stemmed) built fromskills/INDEX.json+ each skill file's Examples section (skills/library/<name>.md, orskills/<name>/SKILL.mdfor the two orchestrators) byscripts/build_route_index.py. The dispatcher (skills/better-thinking/SKILL.mdstep 3) runsscripts/route.py "<task>"against it for a lexical shortlist before confirming againstINDEX.json— a token-overlap aid, not a semantic/embeddings search, so it can still miss a good match phrased very differently from the skill's own vocabulary. Never hand-editROUTE_INDEX.json.- After adding, editing, removing, or renaming any skill (or its
related/dependencies,one_line,triggers, or## Examplessection), run both:python3 scripts/build_route_index.py python3 scripts/check_consistency.pycheck_consistency.pychecks frontmatter validity, INDEX.json↔filesystem↔frontmatter sync, dangling[[wiki-links]], and catalog specs with no corresponding built skill. Fix everything it reports before considering the change done — this is exactly the class of drift that accumulates silently otherwise (see git history around 2026-07-09 for the incident that motivated writing it: a fully-specifiedscientific-methodcomposite that several other skills depended on but that was never actually built — since resolved, the skill is built and registered).build_route_index.pymust be re-run any time the text it's built from changes, or the router's shortlist goes stale relative to the actual skills. - There is no other build/test step. A change to this repo is a change to markdown and JSON files (plus regenerating
ROUTE_INDEX.jsonwhen its inputs change).
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.
- 6d ago First seen · 35 lines · 978 tokens per session scan A 82f2639c48ff
better-thinking CLAUDE.md is an instructions file published in the GitHub repository skyf0xx/better-thinking (4 stars, last pushed 25d ago), licensed MIT. It adds 978 tokens to every session, about $0.0049 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 2026-08-31.
Other instructions, from other repositories
platform-skills copilot-instructions.md
Copilot instructions for nitinjain999/platform-skills, covering platform engineering instructions for github copilot, version: 1.40.0, source: https://github.com/nitinjain999/platform-skills, response contract and core principles.
recursive-decomposition-skill AGENTS.md
Instructions for massimodeluisa/recursive-decomposition-skill, covering agents: recursive-decomposition skill, read these first (mandatory), language policy, non-negotiables and commands.
stockbit-mcp CLAUDE.md
Claude Code instructions for INo-xious/stockbit-mcp, covering claude.md, what this is, commands, the map and three invariants. do not break them; each has a test.
curie CLAUDE.md
Claude Code instructions for curie-eng/curie, covering one entry point: curie, release train selection and architecture decision records (adrs).
embedded-systems-architect AGENTS.md
Instructions for Zachariah9420/embedded-systems-architect: This repository ships an agent skill for embedded-systems and edge-AI development work.
agentic-validation-skills CLAUDE.md
Claude Code instructions for vivekkrishna/agentic-validation-skills, covering agentic test automation guidelines (cige), 1. establish context before testing, 2. anchor every test to intent, 3. define guardrails before executing and 4. treat execution as adaptive guidance.