Borrowing it
Nothing to install: this file belongs to debugmcp/mcp-debugger. 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/debugmcp/mcp-debugger/main/CLAUDE.mdgit clone --depth 1 https://github.com/debugmcp/mcp-debuggerWrote 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/debugmcp/mcp-debugger/claude-md)<a href="https://agentmods.dev/instructions/debugmcp/mcp-debugger/claude-md"><img src="https://agentmods.dev/badge/instructions/debugmcp/mcp-debugger/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/debugmcp/mcp-debugger/claude-md"><img src="https://agentmods.dev/badge/instructions/debugmcp/mcp-debugger/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 | $0.11787 | $0.11787 |
| Opus 5.5 | $0.04715 | $0.04715 |
| Sonnet 5.5 | $0.02357 | $0.02357 |
| Haiku 4.5 | $0.01179 | $0.01179 |
Grade A, and why
mcp-debugger 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 today.
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 — 601 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.
Project Overview
mcp-debugger is a Model Context Protocol (MCP) server that provides step-through debugging capabilities for AI agents. It acts as a bridge between MCP clients (like Claude) and debug adapters, enabling structured debugging operations through JSON-based tool calls.
The project uses a monorepo architecture with dynamic adapter loading, allowing language-specific debug adapters to be developed and deployed independently.
Monorepo Structure
mcp-debugger/
├── packages/
│ ├── shared/ # Shared interfaces, types, and utilities
│ ├── codelldb-common/ # Shared CodeLLDB vendoring/resolution (rust + cpp + cobol)
│ ├── adapter-python/ # Python debug adapter using debugpy
│ ├── adapter-ruby/ # Ruby debug adapter using rdbg (debug gem)
│ ├── adapter-javascript/ # JavaScript/Node.js adapter using js-debug
│ ├── adapter-rust/ # Rust debug adapter using CodeLLDB
│ ├── adapter-go/ # Go debug adapter using Delve
│ ├── adapter-java/ # Java debug adapter using JDI bridge
│ ├── adapter-dotnet/ # .NET/C# debug adapter using netcoredbg
│ ├── adapter-cpp/ # C/C++ debug adapter using CodeLLDB
│ ├── adapter-cobol/ # COBOL debug adapter using GnuCOBOL + CodeLLDB behind a Node DAP shim
│ ├── adapter-dart/ # Dart/Flutter debug adapter using the SDK's own debug adapters behind a TCP-to-stdio bridge
│ ├── adapter-mock/ # Mock adapter for testing
│ └── mcp-debugger/ # Self-contained CLI bundle (npx distribution)
├── src/
│ ├── adapters/ # Adapter loading and registry system
│ ├── container/ # Dependency injection container
│ ├── proxy/ # DAP proxy system
│ └── session/ # Session management
└── tests/ # Comprehensive test suite
Package Details
- @debugmcp/shared: Core interfaces and types used across all packages
- @debugmcp/codelldb-common: Shared CodeLLDB vendoring, resolver, and spawn glue (used by the rust, cpp and cobol adapters)
- @debugmcp/adapter-python: Python debugging support via debugpy
- @debugmcp/adapter-ruby: Ruby debugging support via rdbg (debug gem)
- @debugmcp/adapter-javascript: JavaScript/Node.js debugging support via js-debug
- @debugmcp/adapter-rust: Rust debugging support via CodeLLDB
- @debugmcp/adapter-go: Go debugging support via Delve
- @debugmcp/adapter-java: Java debugging support via JDI bridge
- @debugmcp/adapter-dotnet: .NET/C# debugging support via netcoredbg
- @debugmcp/adapter-cpp: C/C++ debugging support via CodeLLDB (launch + attach-by-PID)
- @debugmcp/adapter-cobol: COBOL debugging support via GnuCOBOL (
cobc) + CodeLLDB behind a Node DAP shim that serves COBOL-shaped scopes/values from the compiler's dump metadata (launch + attach-by-PID) - @debugmcp/adapter-dart: Dart/Flutter debugging support via the SDK's own debug adapters (
dart debug_adapter [--test],flutter debug-adapter [--test]) behind a TCP-to-stdio bridge; nothing vendored (launch + attach by VM-service URI) - @debugmcp/adapter-mock: Mock adapter for testing and development
- @debugmcp/mcp-debugger: Self-contained CLI bundle for npm distribution (npx-ready)
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.
- today Changed · +156 tokens per session 767fe62431aa
- 3d ago Changed · +36 tokens per session dbfa3b73540e
- 5d ago Changed · +201 tokens per session 704e49dbd712
- 12d ago Changed · +135 tokens per session bd612ceabb69
- 14d ago Changed · +74 tokens per session cff5eaaf3c7b
- 15d ago Changed · +12 lines · +1,077 tokens per session 3d208c2bae15
- 19d ago Changed · +1 lines · +188 tokens per session 3806a5b4e268
- 24d ago Changed · +1 lines · +106 tokens per session 50e48866a2c0
- 25d ago Changed · +67 tokens per session 936943aa3dad
- 26d ago First seen · 587 lines · 9,747 tokens per session scan A 81eb3c0a4d75
mcp-debugger CLAUDE.md is an instructions file published in the GitHub repository debugmcp/mcp-debugger (180 stars, last pushed today), licensed MIT. It adds 11,787 tokens to every session, about $0.0471 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.
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.