Pi Omniagent Extensions

Pi Omniagent Extensions is a set of four TypeScript shims — cursor-acp.ts, codex-app-server.ts, claude-code-acp.ts, and rovo-acp.ts — that each wrap one external coding agent’s CLI into an ACP-compatible interface. Once installed via npm, they surface inside Pi’s /model picker as selectable models. You choose ‘GPT-5 [codex-app-server]’ or ‘Cursor Sonnet’ directly inside your existing Pi workspace session, and Pi hands your turn off to that agent’s CLI running locally. No cloud relay, no account linking beyond what each agent already requires.

The differentiating design choice is ACP (Agent Communication Protocol), which provides the common message envelope that lets Pi treat a Cursor process and a Claude Code process as interchangeable model endpoints. That means switching agents mid-session is a picker selection, not a terminal hop. For developers who are already subscribed to several tools and want to route different task types to the agent best suited for them — without rebuilding context each time — this is the mechanical glue that makes that possible.

This fits a narrow but real use case: a single developer or small team sitting on multiple agent subscriptions who wants to maximize credit utilization across those tools from one interface. It breaks down at the boundary of its scope — there is no task routing logic, no fallback handling, and no abstraction above the per-agent CLI. When a CLI it wraps changes its interface, the corresponding shim breaks until the repo is updated. With zero open issues, zero pull requests, and two stars, the update cadence is an open question.

Installation is local only, documented in README.md, HOW_IT_WORKS.md, and USAGE_GUIDE.md in the repository. No API is exposed, no hosted service is involved. Each agent’s own authentication and subscription requirements remain in force — this tool layers on top of what you already have, not a replacement for any of it.