mcp: Instructions file for Claude Code

CLAUDE.md

mcp CLAUDE.md is an instructions file for Claude Code from mrlesmithjr/mcp. It costs 5,448 tokens per session, scanned A, original, MIT.

Repository instructions for an MCP workspace that combines several MCP servers, shared Python tools, and generated plugin marketplaces. MCP servers are programs that provide tools or data to an AI agent.

In plain words
What is it for?
Working on the workspace, locating packages and shared libraries, maintaining Claude and Codex plugin files, and following its marketplace-generation workflow.
Why use it?
They give coding agents the project’s structure, generated-file rules, and plugin conventions. This reduces the risk of editing generated metadata or placing new tools in the wrong package.

Instructions file for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: reads .claude/ paths; mentions .claude-plugin; mentions CLAUDE.md.

This is mrlesmithjr/mcp's own configuration. It tells Claude Code how to work on mcp 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 mcp configures →

Runs only inside a plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else, and the catalogue could not identify which plugin ships it.

Reuse

Borrowing it

Nothing to install: this file belongs to mrlesmithjr/mcp. 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/mrlesmithjr/mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/mrlesmithjr/mcp

Made for: Claude Code.

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Per session 5,448 This file is loaded in full into every session.
When invoked 5,448 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 $0.05448 $0.05448
Opus 5.5 $0.02179 $0.02179
Sonnet 5.5 $0.01090 $0.01090
Haiku 4.5 $0.00545 $0.00545

Measured 2d ago against content hash cd9b3bb06a82, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp 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 · 399 lines

How it starts

The opening of the file, as written. The whole thing — 399 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 in the mcp uv workspace.

Status: ACTIVE Last Updated: 2026-08-07


What this repo is

A uv workspace that consolidates all personal MCP servers into a single lockfile, shared dev tooling, and a marketplace generator. Each tool lives under packages/ as a subtree-merged member.


Structure

mcp/
├── pyproject.toml              # Virtual workspace root (no distribution)
├── uv.lock                     # Single root lockfile (authoritative)
├── .claude-plugin/
│   └── marketplace.json        # GENERATED -- do not hand-edit
├── .agents/plugins/
│   └── marketplace.json        # GENERATED Codex marketplace -- do not hand-edit
├── packages/
│   ├── mcp-common/             # Shared library (mrlesmithjr-mcp-common); PyPI-ready
│   ├── weather-tools/          # mrlesmithjr-mcp-weather-tools
│   │   ├── .claude-plugin/
│   │   │   └── plugin.json     # GENERATED: Claude plugin metadata (no hooks field)
│   │   ├── .codex-plugin/
│   │   │   └── plugin.json     # GENERATED: Codex plugin metadata
│   │   ├── .mcp.json           # GENERATED: Claude Code MCP definition (runs hooks/run_server.sh)
│   │   └── hooks/
│   │       ├── hooks.json      # GENERATED: SessionStart hook wiring
│   │       ├── install_deps.sh # GENERATED: SessionStart venv installer
│   │       └── run_server.sh   # GENERATED: cold-start launcher
│   ├── ynab-tools/             # mrlesmithjr-mcp-ynab-tools (same layout)
│   │                           # ships NO launchagents/: the dashboard is opt-in
│   │                           # via `ynab dashboard install` (see below)
│   ├── homeops/, lawnops/      # launchagents/: plist templates (__HOME__) + ops
│   │                           # scripts, shipped in the plugin and auto-loaded
│   ├── contacts-tools/         # mrlesmithjr-mcp-contacts-tools (Google People API; ContactsManager/PyObjC retained but unwired)
│   └── ...                     # 14 packages total; the 13 plugins share this layout
├── scripts/
│   ├── gen_marketplace.py      # Reads packages/*/pyproject.toml, emits per-package files
│   └── install_launchagents.sh # Manual/dev re-install of all LaunchAgents from the checkout
└── dev/
    └── register_dev.py         # Registers <tool>-dev servers pointing at .venv/bin/

Read the full file on GitHub · 399 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 · +40 lines · +635 tokens per session cd9b3bb06a82
  2. 1mo ago First seen · 359 lines · 4,813 tokens per session scan A dded971513c2

Subscribe to this mod's changes

mcp CLAUDE.md is an instructions file published in the GitHub repository mrlesmithjr/mcp (0 stars, last pushed 2d ago), licensed MIT. It adds 5,448 tokens to every session, about $0.0218 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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