Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/debugmcp/mcp-debugger/claude-mdgit clone --depth 1 https://github.com/debugmcp/mcp-debuggerWhat 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 | $0.08334 | $0.08334 |
| Opus 5 | $0.04167 | $0.04167 |
| Sonnet 5 | $0.01667 | $0.01667 |
| Haiku 4.5 | $0.00833 | $0.00833 |
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 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.
How it starts
The opening of the file, as written. The whole thing — 574 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)
│ ├── 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-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 rust and cpp 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-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.
- 2d ago First seen · 574 lines · 8,334 tokens per session scan A 0815c2764c50
mcp-debugger CLAUDE.md is an instructions file published in the GitHub repository debugmcp/mcp-debugger (159 stars, last pushed 2d ago), licensed MIT. It adds 8,334 tokens to every session, about $0.0417 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.
Other instructions, from other repositories
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.
buildNext
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
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, applying the notice (cutover) and fallback chain (never fail the build).
spec-kit AGENTS.md
Instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
langchain 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.