GitHub host's new open‑source project Planet Maiko turns local development into a playful agent ecosystem. Built by solo creator Brigitte Kawaguchi, the tool launches autonomous “alien dog” agents that coordinate tasks, share context, and flag conflicts without leaving the developer’s machine. It runs on macOS, Linux or Windows with Python 3.10+ and Node 18, requiring only the gh CLI for installation ease.

The runtime handles agent orchestration, lifecycle management, and a shared memory store that captures team‑specific rules extracted from pull‑request history. When an agent errs, it logs the mistake; subsequent agents read the note, preventing repeat errors. Integrations include PagerDuty, Linear, Calendar and GitHub, while cost‑aware model routing lets developers balance performance against API spend for their projects daily operations smoothly.

Installation proceeds via a single git clone, virtual‑environment setup, and npm install for the React frontend. A one‑command launch spins up both backend (port 8420) and UI (http://localhost:5173), with an optional Tauri desktop shell for builds. Because everything runs locally, no telemetry or cloud account is required, making Planet Maiko a free, self‑hosted alternative for dev teams seeking automated, context‑rich assistance.