A lean, Cursor-style coding agent built on pi. Take full control of your AI workflow with a custom tool layer (ApplyPatch, rg, Glob), transparent prompt inspection, and native Model Context Protocol (MCP) integrations.

MonoPilot

Cursor-compatible coding agent profile powered by pi.

MonoPilot is a lightweight, highly customizable Cursor-compatible coding agent built on top of the pi framework. It is designed for developers who want full control over how their coding agent behaves, prefer not to pay a middleman, and want to explore the limits of a lean agent architecture.

Why MonoPilot

• Transparent prompt/runtime envelope with inspection tooling.
• Cursor-styled tool layer replaces default pi tools so launch-time capability and behavior are defined by MonoPilot.
• Extensible tool layer with MCP support for custom tools and resources.

Quickstart

# Run directly without global install
npx mono-pilot

# Or install globally
npm install -g mono-pilot
mono-pilot

Usage

# Interactive
mono-pilot

# One-shot prompt
mono-pilot -p "Refactor this module"

# Continue previous session
mono-pilot --continue

By default, mono-pilot launches pi with:

• --no-extensions
• --extension <mono-pilot extension>
• --tools ls (only when you do not pass --tools or --no-tools)

If you pass --tools, MonoPilot removes built-in edit, write, read, grep, glob, and bash so the extension-provided Cursor-styled tools are used instead. If the list becomes empty, it falls back to ls. The write path is provided by the ApplyPatch tool from the extension.

What ships now

• src/cli.ts – launcher that wraps pi
• src/extensions/mono-pilot.ts – extension entrypoint (tool wiring)
• src/extensions/system-prompt.ts – provider-agnostic prompt stack
• src/extensions/user-message.ts – user message envelope assembly
• src/brief/ – persistent agent memory ("brief" system), inspired by letta-ai/letta-code's memory architecture, renamed from "memory" to "brief" to distinguish condensed knowledge from conversation history
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