Borrowing it
Nothing to install: this file belongs to neptaco/mcproc. 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/neptaco/mcproc/main/CLAUDE.mdgit clone --depth 1 https://github.com/neptaco/mcprocWrote 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/neptaco/mcproc/claude-md)<a href="https://agentmods.dev/instructions/neptaco/mcproc/claude-md"><img src="https://agentmods.dev/badge/instructions/neptaco/mcproc/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/neptaco/mcproc/claude-md"><img src="https://agentmods.dev/badge/instructions/neptaco/mcproc/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 | $0.03910 | $0.03910 |
| Opus 5.5 | $0.01564 | $0.01564 |
| Sonnet 5.5 | $0.00782 | $0.00782 |
| Haiku 4.5 | $0.00391 | $0.00391 |
Grade A, and why
mcproc 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 2mo 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 — 440 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
mcproc is a Rust-based daemon that fulfills Model Context Protocol (MCP) tool calls from LLMs and manages multiple development processes. The project provides a robust process management system with comprehensive logging, validation, and monitoring capabilities.
Key Architecture Components
High-Level Architecture
Claude / Other LLMs
│ JSON-RPC 2.0 (MCP) via stdio
▼
┌───────────────────────────────┐
│ mcproc (CLI + MCP server) │
│───────────────────────────────│
│ • MCP Tool Handlers │
│ • gRPC Client │
└───────────────────────────────┘
│ gRPC (Unix Domain Socket)
▼
┌───────────────────────────────┐
│ mcproc daemon (--daemon) │
│───────────────────────────────│
│ • Process Manager │
│ • Log Hub (direct file I/O) │
│ • gRPC API (tonic) │
└───────────────────────────────┘
│ stdout/stderr capture
▼
┌────────────────────────────────┐
│ Child Processes │
│ (npm run dev, python app.py, │
│ cargo run, etc.) │
└────────────────────────────────┘
Core Components
-
mcproc daemon: The main daemon process (runs as
mcproc --daemon)- Process Manager for spawning/managing child processes
- Log Hub with file-based logging (temporary, deleted on system reboot)
- API Layer using tonic (gRPC via Unix Domain Socket)
- Port detection and monitoring
- Process state tracking (Starting, Running, Stopping, Stopped, Failed)
-
mcproc: CLI tool for interacting with the daemon
- Communicates via gRPC Unix socket
- Supports commands: start, stop, restart, ps, logs, grep, clean, mcp serve
- Project-based process organization
- Auto-starts daemon if not running
-
mcp-rs: Reusable MCP library
- ServerBuilder for creating MCP servers
- Transport implementations (stdio implemented, SSE/HTTP planned)
- Tool registry and handler interfaces
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.
- 2mo ago First seen · 440 lines · 3,910 tokens per session scan A 3c7f7aac4bb7
mcproc CLAUDE.md is an instructions file published in the GitHub repository neptaco/mcproc (10 stars, last pushed 25d ago), licensed MIT. It adds 3,910 tokens to every session, about $0.0156 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 2026-08-31.
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Rosetta Plugin Mode Bootstrap.
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