developer-tools

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.

CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

Agent skill for beautiful, verifiable architecture, workflow, sequence, data-flow, and lifecycle diagrams—self-contained HTML with motion and crisp export.

A skill to stop your coding agent from burying the answer. ADHD-friendly output.

Effortlessly compose, extend, and observe every service in real-time for the first time ever.

Offline, privacy-first grammar checker. Fast, open-source, Rust-powered

Worktrunk is a CLI for Git worktree management, designed for parallel AI agent workflows

AI並行開発時代のgit worktree管理CLI — 複数のAIエージェント（Claude CodeやCodex）を並行実行する際に必要なgit worktreeの管理を、ブランチ操作と同じくらい簡単にするRust製CLIです。ブランチ名だけでworktreeを指定できるほか、パス自動生成やフック機能で並行作業のQoLを大幅に改善します。すでにgit worktreeマネージャーとして人気を集めています。

Fast, scriptable CLI for the App Store Connect API. Automate TestFlight, builds, submissions, signing, analytics, screenshots, subscriptions, and more

Gentle-AI configures the AI coding agents you already use: Claude Code, Cursor, OpenCode, Codex, Pi, and more. Choose persistent memory, Organic-Driven Development, curated skills, MCP servers, personas, and optional bounded review. Open source, no agent lock-in.

The go-to web for your AI coding agent — local-first search, fetch, crawl & research over MCP. No API keys, no cloud, $0/query. Public beta.

A native control plane for Claude Code, Codex, Cursor, Devin and other coding agents.

Give cloud AI agents a real development environment on your own machines.