• Claude Code
  • Codex
  • Cursor Agent
  • Gemini CLI
  • Grok Build
  • OpenCode
  • Droid
  • Copilot
  • Kimi Code
  • Muse Code

Your coding agents, in one place

Run the agent CLIs you already pay for, side by side on your Mac.

Public beta · free until 1 Oct 2026 · macOS 14 or later · notarized by Apple

Shelzo Code with two terminal panes side by side in a project folder.

Each engine keeps its own sign-in and subscription.

Brief a worker, let another engine review, merge it yourself

Delegation gets real work out of an agent without trusting it blindly.

  1. The brief

    Five parts: workspace, goal, hard rules, verification duty, completion criteria. The worker runs in its own worktree.

  2. Verification and review

    The app re-runs the checks itself. A reviewer on another engine judges brief and diff and ends with a verdict.

  3. Your merge

    The result waits in the Inbox with Merge, Squash, Create PR or Discard. Nothing merges on its own.

The Delegations page: a card for Review README, Codex with review by OpenCode, round 1 of 1, the brief with owned paths and verification line, and Start, Open review, Send back to worker.

Agent, Code, Chat

Three ways to work with the same engines, one sidebar that keeps track.

An agent page with its brief, memory, recent chat and routines.

Agent

Named agents with a brief, a memory file and routines that run them on a schedule.

Two terminals side by side in a project folder.

Code

Real terminals side by side in a folder, with Files, Changes and a browser as panes.

A structured Codex chat with a command result.

Chat

A structured thread over each engine's own protocol. Approvals wait above the composer.

Worktrees and hand-offs

A worktree chat with the Changes panel open: main to a shelzo branch, Merge into main, Create PR, two changed files with their line counts and the diff of one.

Finish the worktree from the panel

Read the diff with per-file counts, then merge, squash or open the pull request from the same panel.

Worktrees and Changes in the help

Hand the same chat to another engine

Review with or continue in any installed engine. The transcript travels; credentials are redacted before it goes.

Hand-offs in the help
A chat with the Hand off menu open: Review with Claude Code or OpenCode, Continue in Claude Code or OpenCode.

Everything else an agent needs

Read the help
  • Computer use · every click asks first
  • Connectors · MCP servers and Gmail
  • Remote folders over SSH
  • Routines · agents on a schedule
  • One Inbox for every approval
  • shelzo CLI and local API

Know where every part of the work goes

Shelzo is a native app on your Mac; it talks to nobody it does not have to.

Read the privacy page

Engines talk to their vendors

With their own sign-ins. Shelzo never proxies a token or a prompt.

Chats and settings stay on the Mac

History, layouts and connector settings live in your data folder.

Usage stats are anonymous

Counts and versions, never code or prompts. One switch turns them off.

Crash reports only if you opt in

Off until you turn them on; frames and versions, not text.

Free while we build it together

Everything is free until 1 October 2026; Pro pricing comes in October. Your engine subscriptions stay yours.

Download for macOS

Free during the beta, no sign-up needed · How to get started

Frequently asked

Something else? Write to hello@shelzo.sh.

Do I need an account?

Not to start. Shelzo creates a guest trial for your Mac on first launch; sign in when you want your trial and plan on an account. Your engines keep their own sign-ins and subscriptions.

Which Macs?

macOS 14 or later, Apple Silicon and Intel. The app is notarized and updates itself.

Does Shelzo send my code anywhere?

No. The engines talk to their vendors directly; nothing passes through Shelzo's servers.

What happens on 1 October?

The free beta ends and Pro pricing is announced. Your engine subscriptions stay separate.

Your coding agents, in one place

Start with one folder and one engine; add worktrees, hand-offs and routines when the work asks for them.

Download for macOS

Public beta · free until 1 Oct 2026 · macOS 14 or later · notarized by Apple