Borrowing it
Nothing to install: this file belongs to ruliana/mcp-chain. 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/ruliana/mcp-chain/main/CLAUDE.mdgit clone --depth 1 https://github.com/ruliana/mcp-chainWrote 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/ruliana/mcp-chain/claude-md)<a href="https://agentmods.dev/instructions/ruliana/mcp-chain/claude-md"><img src="https://agentmods.dev/badge/instructions/ruliana/mcp-chain/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/ruliana/mcp-chain/claude-md"><img src="https://agentmods.dev/badge/instructions/ruliana/mcp-chain/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 | $0.01835 | $0.01835 |
| Opus 5 | $0.00918 | $0.00918 |
| Sonnet 5 | $0.00367 | $0.00367 |
| Haiku 4.5 | $0.00184 | $0.00184 |
Grade A, and why
mcp-chain 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 9d 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 — 214 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
AI Memory Management with TODO.md
TODO.md as AI Memory System
The ai/TODO.md file serves as persistent memory for multi-phase tasks:
- Cross-Session Context: Contains all context needed to continue tasks in new sessions
- Living Document: You should actively update it while working
- Problem Prevention: Record issues to avoid repeating mistakes
- Phase-Based Structure: High-level phases with local planning
- Learning Integration: Continuously improve based on experience
TODO Workflow for AI Assistants
1. Task Initialization
When user requests a multi-phase task:
# ALWAYS do this first for new long-term tasks
rm -f ai/TODO.md # Remove existing TODO if present
cp ai/TODO_template.md ai/TODO.md # Create new from template
# Then customize the template for the specific task
2. Phase Execution Pattern
MANDATORY: Create local plan before implementation
**Local Plan:** (Create detailed sub-tasks when starting this phase)
- [ ] Analyze current codebase structure
- [ ] Identify specific files to modify
- [ ] Create test cases for new functionality
- [ ] Implement core changes
- [ ] Validate implementation
3. Active Updates During Work
Update TODO.md frequently:
- Mark completed sub-tasks with
[x] - Record any problems encountered in "Problems Encountered & Solutions"
- Update "Context for Next Session" before ending work
- Document successful patterns that work well
- Note any changes to approach or strategy
4. Session Handoff
Before ending each session:
- Update "Current Status" and "Active Phase"
- Fill in "Context for Next Session" with essential information
- Record any unresolved issues in "Problems Encountered"
- Update "Last Updated" timestamp
Template Usage Instructions
Creating New TODO from Template
- Replace Template Variables: All
{VARIABLE_NAME}placeholders with actual values - Customize Phases: Adjust phases to match your specific task requirements
- Set Context: Fill in project-specific commands and background information
- Initialize Status: Set current phase and status appropriately
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.
- 9d ago First seen · 214 lines · 1,835 tokens per session scan A 8eeb55afb033
mcp-chain CLAUDE.md is an instructions file published in the GitHub repository ruliana/mcp-chain (7 stars, last pushed 1y ago), licensed MIT. It adds 1,835 tokens to every session, about $0.0092 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
repobrain copilot-instructions.md
Copilot instructions for study8677/repobrain, covering github copilot bootstrap instructions and hard rule — query the repobrain hub first.
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.
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.
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).
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).
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.