A native desktop client for AI-assisted development — built for deep work, not chat windows.
Supports the Claude Agent SDK and OpenAI Codex SDK.
Most AI interfaces are web apps in a frame. Pylon is a desktop application — purpose-built for the way developers actually work. Multi-session tabs. Git worktrees that isolate each task. PR reviews that run in parallel. Every tool call rendered with intention, not dumped as JSON.
It connects directly to your Claude Code authentication. No extra accounts. No browser tabs. Just open it and work.
Full agent SDK integration with real-time token streaming, extended thinking, and multi-agent orchestration. Switch between Claude (Opus, Sonnet, Haiku) and Codex models. Adjust reasoning effort per session. Resume any conversation where you left off — sessions persist in a local SQLite database.
Plan mode lets you review what the agent intends to do before it executes. The agent proposes a plan, you approve or revise, then it proceeds. Read-only until you say go.
Every tool the agent uses gets a purpose-built renderer. Bash output renders with ANSI colors. Edits show inline diffs. File reads display syntax-highlighted code. TodoWrite tasks extract into a sidebar panel you can track. Nothing is hidden behind "raw output" toggles.
A context window indicator shows exactly where you stand. Cost tracking keeps you informed. Every session is a tab, and every tab remembers its draft.
Select a pull request from your repo. Pylon dispatches specialized review agents in parallel — security, bugs, performance, style, architecture, UX — each with its own system prompt you can customize.
Large diffs are automatically chunked for parallel processing. Findings surface with severity badges and precise file/line references. Review them in a split diff view with inline annotations, then post individual findings or a full review directly to GitHub.
Raise pull requests without leaving the app. The agent analyzes your commits and diffs to draft the title and body. Review the included changes, set your base branch, and submit.
Point Pylon at your project and it auto-detects your framework, dev command, and port. The agent suggests exploration goals, then dispatches workers to navigate your running app and find bugs.
Findings come back with severity grades and reproduction steps. A monitoring view shows live agent activity. A comparison view lets you review findings across multiple exploration runs.
An AST-powered code explorer for your project. The repo map gives a high-level structural overview. Select any file to visualize its syntax tree, with a code panel and minimap for navigation. An AI chat panel lets you ask questions about the code structure.
A full git panel lives in the navigation rail. Canvas-rendered commit graph with branch coloring and interactive selection. AI-generated commit messages from staged changes. Natural language git operations — type a command in plain English and Pylon translates, confirms, executes.
When conflicts arise, an AI resolver walks through each file with confidence badges.
Each session can run in its own git worktree. Pylon captures a baseline on the first edit, so diffs show only what changed in this session. Setup recipes let you configure how worktrees are initialized. When you're done, merge back or discard — all from a single dialog.
A spending dashboard tracks daily cost trends, token usage by model and project, and your most expensive sessions. Filter by 7, 30, or 90 days.
Cmd+K opens the command palette for every action. Full keyboard shortcut system for navigation, session management, and mode switching — with a searchable overlay to discover them.
Download the latest .dmg from GitHub Releases. macOS universal binary (Apple Silicon + Intel), signed and notarized.
Prerequisites
- Bun v1.1+
- A Claude Code login
- GitHub CLI (
gh) — optional, for PR features
bun install
bun run devPylon uses your existing Claude Code authentication.
Pylon is an electron-vite project with three processes:
- Main — Electron + provider abstraction (Claude Agent SDK, Codex SDK) + SQLite persistence
- Preload — Typed IPC bridge via
contextBridge.exposeInMainWorld - Renderer — React + Zustand + Tailwind CSS
Both AI SDKs are normalized into a common event stream through a provider abstraction layer. The session manager is provider-agnostic — it doesn't care which SDK is underneath.
Tech stack
| Layer | Technology |
|---|---|
| Runtime | Electron 39 + electron-vite |
| Frontend | React 19, Tailwind CSS 4, Zustand |
| Routing | Wouter |
| Database | better-sqlite3 (WAL mode) |
| AI (Claude) | @anthropic-ai/claude-agent-sdk |
| AI (Codex) | @openai/codex-sdk |
| Code Analysis | web-tree-sitter + tree-sitter-wasms |
| Visualization | d3-force |
| Charts | Recharts |
| Animations | Motion |
| Syntax | Shiki |
| Markdown | react-markdown + remark-gfm |
| Icons | Lucide React |
| Linting | Biome |