What is meta-cc CLAUDE.md?

Repository instructions for meta-cc, including its development process, documentation links, testing commands, and MCP server usage. MCP lets an AI assistant use tools exposed by the project.

Developing plugins, running checks, using the project's 16 MCP tools, and finding or viewing saved prompts.

They give contributors a consistent path for building, testing, querying session data, and managing prompts.

meta-cc CLAUDE.md — Instructions file for coding agents by yaleh: Repository instructions for meta-cc, including its development process, do

Install

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.

agentmods

npx agentmods add instructions/yaleh/meta-cc/claude-md

Clone the repo

git clone --depth 1 https://github.com/yaleh/meta-cc

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/yaleh/meta-cc/claude-md.svg)](https://agentmods.dev/instructions/yaleh/meta-cc/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/yaleh/meta-cc/claude-md"><img src="https://agentmods.dev/badge/instructions/yaleh/meta-cc/claude-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 3,786 This file is loaded in full into every session.

When invoked 3,786 The same file — it is already loaded in full.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5.1	$0.03786	$0.03786
Opus 5	$0.01893	$0.01893
Sonnet 5	$0.00757	$0.00757
Haiku 4.5	$0.00379	$0.00379

Measured 5d ago against content hash 91adf2d8e68e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

meta-cc 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 5d 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 · 374 lines

How it starts

The opening of the file, as written. The whole thing — 374 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 when working with code in this repository.

Quick Links

New to meta-cc?

Start here: README.md - Installation and quick start
Understand the design: docs/core/principles.md - Core constraints
Integration guide: docs/guides/integration.md - Choose MCP/Slash

Development Workflow

Current plan: docs/core/plan.md - Phase roadmap and status
Build and test: Run make dev (quick) → make commit (validate) → make push (full check)
Plugin development: docs/guides/plugin-development.md - Complete workflow

MCP Server Usage

MCP guide: docs/guides/mcp.md - Complete MCP reference (16 tools)
Quick test: Use MCP tool get_session_stats

Common Tasks

Fix test failures: make dev → Review errors → Fix → make commit
Query session data: Use MCP tools (see MCP Guide)
Update plugin: docs/guides/plugin-development.md
Manage prompts: /prompt-list (browse) | /prompt-find <keywords> (search) | /prompt-show <id> (view)

FAQ

Q: Tests failed after my changes - what should I do? A: Run make dev for quick iteration, then make commit to validate. Fix issues iteratively. If tests fail after multiple attempts, HALT development and document blockers.

Q: How much code can I write in one phase? A: Maximum 500 lines of code modifications per phase, 200 lines per stage. See docs/core/principles.md.

Q: Should I use MCP or Slash Commands? A: Quick rule: Natural questions → MCP | Repeated workflows → Slash. See docs/guides/integration.md.

Q: How do I query session data? A: Use consolidated query tools for common questions and the two-stage tools for custom jq:

// Consolidated query tools
query_session_signals({type: "errors", limit: 10})
query_session_signals({type: "tokens", stats_first: true})
query_session_content({role: "user", pattern: "fix.*bug"})

// Custom jq over selected files
execute_stage2_query({
  files: ["/path/to/session.jsonl"],
  filter: 'select(.type == "assistant")',
  transform: '{timestamp, usage: .message.usage}'
})

See MCP Query Tools Reference and Two-Stage Query Guide for complete documentation.

Read the full file on GitHub · 374 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.

5d ago First seen · 374 lines · 3,786 tokens per session scan A 91adf2d8e68e

Subscribe to this mod's changes

meta-cc CLAUDE.md is an instructions file published in the GitHub repository yaleh/meta-cc (21 stars, last pushed 14d ago), licensed MIT. It adds 3,786 tokens to every session, about $0.0189 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.

Building agents

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.

openai/codex · 5,182 tokens

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).

microsoft/vscode · 6,785 tokens

meta-cc CLAUDE.md