Borrowing it
Nothing to install: this file belongs to joehaddad2000/claude-todo-emulator. 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/joehaddad2000/claude-todo-emulator/main/CLAUDE.mdgit clone --depth 1 https://github.com/joehaddad2000/claude-todo-emulatorWrote 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/joehaddad2000/claude-todo-emulator/claude-md)<a href="https://agentmods.dev/instructions/joehaddad2000/claude-todo-emulator/claude-md"><img src="https://agentmods.dev/badge/instructions/joehaddad2000/claude-todo-emulator/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/joehaddad2000/claude-todo-emulator/claude-md"><img src="https://agentmods.dev/badge/instructions/joehaddad2000/claude-todo-emulator/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 | $0.01161 | $0.01161 |
| Opus 5 | $0.00580 | $0.00580 |
| Sonnet 5 | $0.00232 | $0.00232 |
| Haiku 4.5 | $0.00116 | $0.00116 |
Grade A, and why
claude-todo-emulator 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 12d 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 — 159 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.
Development Commands
uv sync- Install dependenciesmake setup- Same as uv syncmake lint- Run ruff linting with auto-fixmake format- Format code with ruffmake clean- Remove cache files and artifactsuv run python -m src.server- Run the MCP server directlyuv run python -m pytest- Run tests (when added)
Architecture Overview
This is a FastMCP-based Model Context Protocol server that emulates Claude Code's task management system. The architecture follows a layered approach:
Core Components
MCP Server Layer (src/server.py):
- FastMCP server with two tools:
TodoRead()andTodoWrite(params) - Error handling with structured error responses
- Acts as the public API for the todo system
Tool Layer (src/tools/):
todo_read.py- Returns current todos (no parameters)todo_write.py- Replaces entire todo list (validates input)- Thin wrappers around the state management layer
State Management (src/state/store.py):
- Singleton store pattern with auto-initialization
- Preserves
created_attimestamps when updating existing todos - Manages complete todo lifecycle (read/write/clear)
Persistence Layer (src/state/persistence.py):
- File-based storage to
.mcp-todos.jsonin current working directory - Project-scoped todos (each directory gets its own todo list)
- Atomic writes using temporary files
- User-only file permissions (600)
- Automatic recovery from corrupted files
Validation Layer (src/state/validators.py):
- Enforces business rules: unique IDs, single in-progress task
- Type validation for status/priority enums
- Required field checking
Data Flow
- MCP client calls
TodoRead()orTodoWrite(params) - Server delegates to appropriate tool function
- Tool function interacts with the singleton store
- Store manages validation and persistence
- Persistence layer handles atomic file operations
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.
- 12d ago First seen · 159 lines · 1,161 tokens per session scan A b3ca2df762f7
claude-todo-emulator CLAUDE.md is an instructions file published in the GitHub repository joehaddad2000/claude-todo-emulator (26 stars, last pushed 9mo ago), licensed MIT. It adds 1,161 tokens to every session, about $0.0058 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.
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