Borrowing it
Nothing to install: this file belongs to john-wilmes/claude-agentic-coding-playbook. 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/john-wilmes/claude-agentic-coding-playbook/master/CLAUDE.mdgit clone --depth 1 https://github.com/john-wilmes/claude-agentic-coding-playbookWrote 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/john-wilmes/claude-agentic-coding-playbook/claude-md)<a href="https://agentmods.dev/instructions/john-wilmes/claude-agentic-coding-playbook/claude-md"><img src="https://agentmods.dev/badge/instructions/john-wilmes/claude-agentic-coding-playbook/claude-md/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/instructions/john-wilmes/claude-agentic-coding-playbook/claude-md"><img src="https://agentmods.dev/badge/instructions/john-wilmes/claude-agentic-coding-playbook/claude-md.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 | $0.00831 | $0.00831 |
| Opus 5.5 | $0.00332 | $0.00332 |
| Sonnet 5.5 | $0.00166 | $0.00166 |
| Haiku 4.5 | $0.00083 | $0.00083 |
Grade A, and why
claude-agentic-coding-playbook CLAUDE.md scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
- **Zero npm dependencies** — all hooks use Node stdlib only (`fs`, `path`, `os`, `crypto`, `child_process`) How it starts
The opening of the file, as written. The whole thing — 43 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agentic Coding Playbook
Evidence-based practices for LLM-assisted software development. Hooks and scripts for Claude Code.
Quality Gates
Run these before every commit:
- Test:
for t in tests/hooks/*.test.js; do node "$t" || exit 1; done && for t in tests/fleet/*.test.js; do node "$t" || exit 1; done && for t in tests/scripts/*.test.sh; do bash "$t" || exit 1; done && for t in tests/scripts/*.test.js; do node "$t" || exit 1; done && for t in tests/skills/*.test.sh; do bash "$t" || exit 1; done && for t in tests/skills/*.test.js; do node "$t" || exit 1; done && for t in tests/investigate/*.test.js; do node "$t" || exit 1; done
No type-check or lint commands — this is a bash + Node scripting project.
Architecture
templates/hooks/— Hook scripts installed to~/.claude/hooks/byinstall.sh; includespre-commit-tests.js(PreToolUse: blocks git commit when tests are known-failing),gitignore-guard.js(PreToolUse: warns before git commit if .gitignore missing),skip-comment-guard.js(PostToolUse: warns when .skip added without documenting comment); tested bytests/hooks/pre-commit-tests.test.js,tests/hooks/gitignore-guard.test.js,tests/hooks/skip-comment-guard.test.jsprofiles/combined/— CLAUDE.md, skills, and settings for the combined dev+research profilescripts/— CLI tools (q,qa,claude-loop.sh,analyze-logs.js,knowledge-to-vault.js,investigation-to-vault.js); tested bytests/scripts/knowledge-to-vault.test.js,tests/scripts/investigation-to-vault.test.jstemplates/fleet/— Fleet index scripts (fleet-index.js)templates/mcp/— MCP server scripts (fleet-index-server.js)tests/hooks/— Node.js integration tests for each hook (zero deps, stdlib only)tests/fleet/— Node.js integration tests for fleet scriptstests/scripts/— Bash integration tests for CLI scriptstests/investigate/— Node.js tests for investigation scoringtests/skills/smoke/— Smoke tests usingclaudeCLI (gated behindSKILL_SMOKE=1env var)docs/— Best practices guide, case studies, methodology docs
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.
- 2mo ago First seen · 43 lines · 831 tokens per session scan A 3001af10f2fc
claude-agentic-coding-playbook CLAUDE.md is an instructions file published in the GitHub repository john-wilmes/claude-agentic-coding-playbook (5 stars, last pushed 6mo ago), licensed MIT. It adds 831 tokens to every session, about $0.0033 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.