MCP server that turns the pi coding agent into a steerable background worker: delegate a task, redirect it mid-run, and keep its context out of your own.
MCP server that exposes the pi coding agent as a delegable, steerable worker.
Point Claude Code (or any MCP host) at it and delegate work to any of pi's ~38 providers (DeepSeek, Grok, GLM, Kimi, Qwen, Codex, OpenRouter, local llama.cpp) with the sub-agent's context staying out of your main conversation.
Your main harness runs on an expensive model, with a context window you care about. A lot of what it does doesn't need that model, and actively damages that context: grepping a repo for every call site, reading a 2000-line file to answer one question, auditing what a refactor left behind.
- Cost. The grunt work runs on DeepSeek, GLM, Kimi, Qwen, or a local llama.cpp. You pay frontier prices only for the reasoning that actually needs them. - Context. The delegate reads the files on its own budget and returns a result. The 200 KB it read never enters your conversation. - Blast radius. Delegates are read-only by default (read, grep, find, ls), enforced at session construction. A cheap model doing exploratory work cannot touch your tree unless you opt it in.
The delegate is always the pi agent. Codex, Grok, DeepSeek and the rest supply the model behind it; this is not a wrapper around their CLIs.
Why pi, and not opencode or a CLI wrapper?
A delegate is only steerable if two channels stay open: you must be able to redirect it mid-task, and it must be able to ask you something and block until you answer. Most ways of driving a coding agent from another program close both.
From the project README.
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