codex-host

CodexHost runs other coding agents inside Codex Desktop. If you have settled on one desktop app but keep dropping to a terminal for Claude Code or Pi, this puts those harnesses behind the Codex UI instead. It supports Pi, Claude Code, OpenCode, DeepSeek Harness, Grok, Oh My Pi, and Antigravity, and it can hand a task from one agent to another.

The interesting call is that it does not flatten everything into one protocol. Each agent goes through its own native interface, Pi over its official RPC and Claude Code through the Agent SDK, with a CLI shim in front. Streaming, tool calls, diffs, and approval prompts come through the way the underlying agent produced them instead of as a lowest common denominator. Install is a global npm package, or an installer for macOS and Windows, with Linux on x64 and ARM64.

MIT and free. Nothing to host. The agents themselves still bill you on their own plans.

The catch is that this is glue over seven moving targets, and it needs official Codex Desktop plus Node 22.19 or newer. Every one of those vendors ships breaking changes on its own schedule. The question is not whether it works today. It is whether the author is still patching it in six months.