🧠the-brain

Overview

the-brain — Pluggable Cognitive Operating System for AI Agents

the-brain is an extensible background orchestrator that observes your interactions with AI coding assistants and builds a persistent memory tailored to you.

Why the-brain?

AI models forget everything between sessions. the-brain remembers — your coding patterns, preferences, corrections, and evolving style. It runs locally, costs nothing, and requires zero effort.

Quick Start

curl -fsSL https://the-brain.dev/install.sh | bash
the-brain init
the-brain daemon start

That's it. The daemon watches your IDE logs and builds your brain in the background.

Architecture at a Glance

Harvesters (Cursor, Claude Code, Windsurf)

⚡ INSTANT — Graph Memory (immediate corrections)

⚖️ SELECTION — SPM Curator (filters noise)

🌌 DEEP — MLX LoRA Training (overnight consolidation)

What the-brain Learns

  • Corrections: "No, actually use useCallback here" → remembers for next time
  • Preferences: "I prefer arrow functions" → injected into every prompt
  • Patterns: Repeated tech choices → auto-suggests related concepts
  • Projects: Per-project memory isolation with cross-project promotion

Sections

  • Start Here — Installation, quickstart, configuration
  • Core Concepts — Architecture, hook system, memory layers
  • Customization — Plugins, harvesters, training, storage
  • Reference — CLI, config schema, MCP tools, env vars
  • Integrations — MCP server, remote mode, IDE setup, menu bar
  • Development — Contributing, project structure, testing

Tech Stack

ComponentTechnology
RuntimeBun + TypeScript
Databasebun:sqlite + Drizzle ORM
Pluginshookable event system
TrainingApple MLX (Python sidecar)
DocsNext.js + Fumadocs

License

MIT © 2026 Oskar Schachta

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