What is omnifocus-claude-extension CLAUDE.md?

A project guide for an OmniFocus extension that lets Claude Desktop manage tasks using the Getting Things Done method, a system for organising tasks and next actions. It covers setup, building, validation, testing, and the extension’s main components.

Use it when installing dependencies, building or releasing the extension, validating its package, or running its tests.

It gives coding agents the repository context and commands needed to work on the extension correctly.

How geoffdavis/omnifocus-claude-extension configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to geoffdavis/omnifocus-claude-extension. 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/geoffdavis/omnifocus-claude-extension/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/geoffdavis/omnifocus-claude-extension

Made for: Claude Code.

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/geoffdavis/omnifocus-claude-extension/claude-md/github.svg)](https://agentmods.dev/instructions/geoffdavis/omnifocus-claude-extension/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/geoffdavis/omnifocus-claude-extension/claude-md"><img src="https://agentmods.dev/badge/instructions/geoffdavis/omnifocus-claude-extension/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/geoffdavis/omnifocus-claude-extension/claude-md"><img src="https://agentmods.dev/badge/instructions/geoffdavis/omnifocus-claude-extension/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 971 This file is loaded in full into every session.

When invoked 971 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.

Model	Per session	Once invoked
Fable 5.1	$0.00971	$0.00971
Opus 5	$0.00485	$0.00485
Sonnet 5	$0.00194	$0.00194
Haiku 4.5	$0.00097	$0.00097

Measured 10d ago against content hash 70c6c762a95c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

omnifocus-claude-extension 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 10d 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 · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 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

This is an OmniFocus Claude Desktop Extension that enables advanced task management using GTD (Getting Things Done) methodology. The extension uses MCP (Model Context Protocol) to communicate between Claude Desktop and OmniFocus via AppleScript.

Essential Commands

Build & Development

# Install dependencies
npm install

# Build the MCPB extension file
npm run build

# Validate the built extension
npm run validate

# Clean and rebuild
npm run rebuild

# Development build with validation
npm run dev

# Production release build
npm run release

Testing

# Run tests
npm test

# Test specific components
node test-server.js      # Test MCP server
node test-manifests.js   # Test manifest generation
node validate-mcpb.js    # Validate MCPB package

Architecture

Core Components

MCP Server (src/server/index.js)
- JSON-RPC 2.0 implementation for Claude Desktop communication
- Tool registration and execution routing
- AppleScript execution via child processes
- Error handling and response formatting
AppleScript Layer (src/scripts/)
- Original scripts: add_task.applescript, complete_task.applescript, list_inbox.applescript, today_tasks.applescript, weekly_review.applescript
- Enhanced scripts in enhanced/: search_tasks.applescript, edit_task.applescript, batch_add_tasks.applescript, create_recurring_task.applescript, plus list views
Build System (build.js)
- Creates MCPB package following official specification
- Handles manifest generation with proper MCPB format (manifest_version: "0.3")
- Archives extension with correct structure
- Generates checksums and build reports
Extension Manifest (src/manifest-template.json)
- Must follow MCPB v0.3 specification format
- Server entry point configuration
- Tool definitions and metadata

Read the full file on GitHub · 113 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.

10d ago First seen · 113 lines · 971 tokens per session scan A 70c6c762a95c

Subscribe to this mod's changes

omnifocus-claude-extension CLAUDE.md is an instructions file published in the GitHub repository geoffdavis/omnifocus-claude-extension (10 stars, last pushed 4mo ago), licensed MIT. It adds 971 tokens to every session, about $0.0049 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 2026-08-31.

Productivity claude-desktop gtd mcp-server omnifocus

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