Borrowing it
Nothing to install: this file belongs to AaronRoeF/claude-code-patterns. 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/AaronRoeF/claude-code-patterns/main/CLAUDE.mdgit clone --depth 1 https://github.com/AaronRoeF/claude-code-patternsWrote 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/aaronroef/claude-code-patterns/claude-md)<a href="https://agentmods.dev/instructions/aaronroef/claude-code-patterns/claude-md"><img src="https://agentmods.dev/badge/instructions/aaronroef/claude-code-patterns/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/aaronroef/claude-code-patterns/claude-md"><img src="https://agentmods.dev/badge/instructions/aaronroef/claude-code-patterns/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 | $0.00527 | $0.00527 |
| Opus 5.5 | $0.00211 | $0.00211 |
| Sonnet 5.5 | $0.00105 | $0.00105 |
| Haiku 4.5 | $0.00053 | $0.00053 |
Grade A, and why
claude-code-patterns 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 26d 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 — 25 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Code Pattern Library
Field-tested techniques for Claude Code, organized into five parts (counts live in README.md). When the user asks about Claude Code workflows, patterns, or best practices, search these files for relevant techniques. Reference techniques by title.
Structure
README.md— Landing page: architecture overview, getting started, table of contentsPART1-CORE-ARCHITECTURE.md— Part 1: foundational patterns from a live production setupPART2-TECHNIQUES.md— Part 2: techniques by category (index table at top for scanning)PART3-BUILD-A-KNOWLEDGE-BASE.md— Part 3: building a persistent AI knowledge basePART4-QUICK-REFERENCE.md— Part 4: Cheat sheets — keyboard shortcuts, slash commands, MCP starter kitPART5-LIVE-EXAMPLES.md— Part 5: Live production examples — hooks, test suites, scriptsSOURCES.md— Attribution and sources
For AI Agents
This repo is designed to be consumed programmatically. To build an implementation plan:
- Read the README for architecture overview and orientation
- Read Part 3 (BUILD-A-KNOWLEDGE-BASE) for the step-by-step builder table
- Read Part 2 (TECHNIQUES) for specific tips relevant to the user's stack
- Produce a sequenced implementation plan with dependencies
- Create a PULSE.md tracker for the adoption project itself (see "Project Pulse Files for Completion Tracking" in Part 2) and update it every session, so each future session resumes exactly where this one stopped
- Three entries bind the plan you produce and the work you do from it:
- Any MCP server the plan adds is pinned to an exact version or a local checkout — never
npx -y <package>unpinned (Part 2, "Pin Your MCP Servers"). - Any scheduled job is not "done" until it has run once under its real launcher on one real input, and the plan says who runs that and when (Part 2, "The First Real Run Decides").
- Any work you delegate to a subagent comes back with the check the subagent could not do: the premise question, your own one-line mutant against its tests, the gate result, an evidence pass on anything to be published (Part 2, "The Check You Owe Your Delegate"). Report the check, not just the hand-back.
- Any MCP server the plan adds is pinned to an exact version or a local checkout — never
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.
- 26d ago Changed · +4 lines · +176 tokens per session 82e9db4d96bc
- 2mo ago First seen · 21 lines · 351 tokens per session scan A 43321888b3c7
claude-code-patterns CLAUDE.md is an instructions file published in the GitHub repository AaronRoeF/claude-code-patterns (126 stars, last pushed 27d ago), licensed MIT. It adds 527 tokens to every session, about $0.0021 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.
claude-code-patterns CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| claude-code-patterns CLAUDE.mdAaronRoeF/claude-code-patterns | Instructions file | 126 | 27d ago | MIT | A | 527 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |