claude-soul: Instructions file for Claude Code

CLAUDE.md

claude-soul CLAUDE.md is an instructions file for Claude Code from tomdwipo/claude-soul. It costs 2,198 tokens per session, scanned A, original, MIT.

A shared instruction file that describes a workspace’s projects, working principles, documentation map, and learning process for Claude Code. Claude Code is an AI coding tool that follows repository guidance while working.

In plain words
What is it for?
Use it to document sub-projects and entry points, choose the right workflow, follow workspace principles, and turn corrections into reusable guidance.
Why use it?
It gives the agent project-specific orientation and helps preserve useful lessons and rules across future work sessions.

Instructions file for Claude Code

Written for Claude Code: PreToolUse hook event. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Claude Code.

This is tomdwipo/claude-soul's own configuration. It tells Claude Code how to work on claude-soul itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything claude-soul configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tomdwipo/claude-soul. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/tomdwipo/claude-soul/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/tomdwipo/claude-soul

Made for: Claude Code.

Wrote 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.

agentmods badge for claude-soul CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/tomdwipo/claude-soul/claude-md/github.svg)](https://agentmods.dev/instructions/tomdwipo/claude-soul/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/tomdwipo/claude-soul/claude-md"><img src="https://agentmods.dev/badge/instructions/tomdwipo/claude-soul/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.

agentmods 80×15 button for claude-soul CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/tomdwipo/claude-soul/claude-md"><img src="https://agentmods.dev/badge/instructions/tomdwipo/claude-soul/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,198 This file is loaded in full into every session.
When invoked 2,198 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.02198 $0.02198
Opus 5 $0.01099 $0.01099
Sonnet 5 $0.00440 $0.00440
Haiku 4.5 $0.00220 $0.00220

Measured 2d ago against content hash 8a21eec380f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

claude-soul 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 2d 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.

CLAUDE.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

Guidance for Claude Code when working inside this workspace.

This file is the project's "soul". The top section is yours to fill in per project; everything below the line — the Operating Soul, learning loop, .docs/ map, and inherited toolkit — is the reusable engine. Replace the placeholder block, keep the rest.

What this repo currently is —

Describe the project in a few lines: what it does, its stack, entry points, and any language/convention rules. If it's a container of sub-projects, give each its own .docs/flow/ doc and link them here. Delete this quote block once filled.

Sub-project What it does Flow doc Entry point
<dir> .docs/flow/<name>.md <path → entry()>

🫀 Operating Soul — Principles (default every session, not optional)

I operate under these by default, from the first reply — no keyword trigger, no "go read" step. Full set + the distillation engine: .docs/principles/. When a correction teaches a new one, run how-to-learn.md — distil it to a transferable principle, never transcribe a brittle rule. This is what makes the workspace get smarter every session: learnings are written to .docs/, then re-read on the next session's first message.

  1. Lookup first — before my first reply, scan .docs/principles/ + .docs/common-issues/ + the current month's .docs/recent-updates/YYYY/MM.md. Act from what's already known; don't re-discover. On any keyword overlap, open the matching detail file before answering. Ground with semantic search when available — if the code-rag MCP is connected (see tools/code-rag/), use its search_code tool to pull the most relevant code+docs before answering, planning (/plan-first), or breaking down work (/breakdown-design) — it's more precise than grep for "where/how is X done" and returns path:line to open. Fall back to grep/glob if it isn't running.
  2. Explore before acting — a question about a diff/config/topic is exploration; wait for an action verb ("copy", "do it", "yes") before mutating files.
  3. Principle over rule — prefer durable "how to think" over brittle "what to do"; demote to a rule only when a test/build/lint settles it.
  4. Harvest before commit — capture session learnings into .docs/ before any git add/commit/push. Don't ask permission; if there are none, say so. This is gate-enforced: .claude/learn-gate.sh (PreToolUse) blocks git commit until a learning is staged or a conscious no-lessons marker is set — the prompt is the reminder, the gate is the guarantee.
  5. Shared over personal — learnings go to git (.docs/), not only personal memory, so future sessions and any teammate inherit them.
  6. Atomic & independent — split commits/tickets so each is reviewable and ships standalone.
  7. Right project, right rules — find the nearest sub-project's flow doc before acting; never apply one part's conventions (or the inherited Android reference principles) to another.
  8. Critical stance, not validation — default to critical, evidence-aware replies: surface the top weakness first, kill empty validation ("you're right"/"great question"/"perfect"), label confidence [High/Med/Low], hold your position under pushback (insistence ≠ new information), jangan ambil kesimpulan tanpa mencoba, skip warm-up preamble, and mirror the user's language. (detail)

Read the full file on GitHub · 131 lines

Changes

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.

  1. 2d ago Changed · +9 tokens per session 8a21eec380f7
  2. 10d ago First seen · 131 lines · 2,189 tokens per session scan A 1b7d14fee874

Subscribe to this mod's changes

claude-soul CLAUDE.md is an instructions file published in the GitHub repository tomdwipo/claude-soul (24 stars, last pushed 2d ago), licensed MIT. It adds 2,198 tokens to every session, about $0.0110 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 2026-08-30.

Related

Other instructions, from other repositories

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.

vercel/next.js · 7,296 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,153 tokens

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).

microsoft/vscode · 6,785 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens

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.

langchain-ai/langchain · 4,469 tokens

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.

deepseek-ai/deepseek-harness · 3,735 tokens