Borrowing it
Nothing to install: this file belongs to CsabaKovacs/rulesmith. 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/CsabaKovacs/rulesmith/main/CLAUDE.mdgit clone --depth 1 https://github.com/CsabaKovacs/rulesmithWrote 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/csabakovacs/rulesmith/claude-md)<a href="https://agentmods.dev/instructions/csabakovacs/rulesmith/claude-md"><img src="https://agentmods.dev/badge/instructions/csabakovacs/rulesmith/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/csabakovacs/rulesmith/claude-md"><img src="https://agentmods.dev/badge/instructions/csabakovacs/rulesmith/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 | $0.02635 | $0.02635 |
| Opus 5.5 | $0.01054 | $0.01054 |
| Sonnet 5.5 | $0.00527 | $0.00527 |
| Haiku 4.5 | $0.00264 | $0.00264 |
Grade A, and why
rulesmith 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 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.
How it starts
The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Code Operating Rulebook (Evidence-Backed)
Execution Contract
- BINDING: This rulebook is mandatory. Every rule, convention, and workflow defined here MUST be followed without exception. Skipping, ignoring, or partially applying rules is a violation. If a rule conflicts with your default behavior, the rulebook takes precedence.
- Use strict evidence-first behavior: every non-trivial claim must cite concrete files from this repository.
- Enforce repository conventions before introducing new patterns.
- Keep changes reviewable and scoped: prefer the smallest behavior-safe diff that fits the touched boundary.
- strictness:
very-strict - standards:
project-plus-standard - profile:
strict
Project Snapshot
- What: rulesmith — local-first CLI + MCP server for evidence-backed AI coding instruction generation. (evidence: package.json)
- Stack: TypeScript monorepo managed by pnpm with 3 workspace packages. (evidence: pnpm-workspace.yaml, tsconfig.base.json)
- Packages:
packages/core— scanner, evidence bundler, rulebook builder, AST analysis, template renderer, decision tree engine, pack system, safe FS utilities. (evidence: packages/core/src/index.ts)packages/cli— Commander-based CLI wrapping core functions. (evidence: packages/cli/src/index.ts)packages/mcp— MCP server wrapping core functions via@modelcontextprotocol/sdk. (evidence: packages/mcp/src/server.ts)
- Key directories:
packs/default/— Handlebars templates + decision tree YAML + orchestrator prompts. (evidence: packs/default/pack.json)examples/fixtures/— Test fixture repositories for various frameworks. These are test data, NOT production code. (evidence: examples/fixtures/)docs/— Documentation and integration guides. (evidence: docs/)
- Build command coverage: install=yes, build=yes, test=yes, lint=yes. (evidence: package.json)
Setup Commands (with evidence)
- install:
pnpm install - build:
pnpm -r build - test:
pnpm -r test - lint:
pnpm -r lint - format:
UNKNOWN(no format script in package.json) - dev:
UNKNOWN
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 · 170 lines · 2,635 tokens per session scan A 415b4e22aeec
rulesmith CLAUDE.md is an instructions file published in the GitHub repository CsabaKovacs/rulesmith (15 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 2,635 tokens to every session, about $0.0105 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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