graymatter gives your AI agents persistent, searchable memory. 70–98% token reduction, 19,500+ facts indexed, instant FTS5 recall — all running locally, no GPU required.
A high-performance semantic memory server that reduces context token usage by 70–98%. Built on FTS5 indexing with LYT mapping, it stores facts extracted from AI agent sessions and retrieves them in milliseconds. No GPU, no cloud, no API keys — just a local SQLite database and a Python server.
The Architecture
The ecosystem around graymatter — tools, frameworks, and infrastructure for local-first AI PKM.
Automated memory management with tier-based retention and Obsidian synchronization. Turns raw interaction logs into curated wisdom.
SQLite + Python · Tiered Synthesis
Enter the CortexSemantic triple extraction, vector search, and procedural memory. The next generation of agent memory — all free, all local.
Gemini Flash · Embedding-001 · SQLite
Explore SecondCortex →One-command installer for a production-grade AI gateway. Your brain, always online and secure.
Alibaba Cloud · VPS · Tailscale-hardened
Personal knowledge management using the ACE framework and AI-generated Maps of Content.
Obsidian-native · AI Synthesis
Explore MethodologyThe original 4WD companion robot. BLE control, computer vision, direct LLM connection. Predecessor to OttoBot v2.1.
ESP32-S3 · BLE · CV · LLM
Meet KodaHonest, battle-tested reviews of the best AI coding tools in 2026 — from Cursor to OpenCode.
Affiliate Recommendations
View Tools →A practitioner's guide to maintaining high-availability AI gateways and hardening agent infrastructure.
Operational Excellence
Read GuideESP32-S3 companion robot with browser-ROS bridge and LLM brain. Audio streaming confirmed. MCP server with 10 tools.
ESP32-S3 · OV5640 · I2S · MCP
OttoBot v2.1 →What I'm Building
Current work across robotics, business, and content creation.
ESP32-S3 companion robot with browser-ROS bridge and LLM brain via OpenClaw agent. Audio streaming breakthrough June 25. Mood engine v3 with 5-axis emotion model.
ESP32-S3 · OV5640 · MAX98357A · INMP441
OttoBot v2.1 →WhatsApp-integrated commerce platform. Landing, dashboard, WhatsApp OTP login, Midtrans payments, order history. Running in production.
Next.js 15 · nginx · Midtrans Snap.js
mbawarung.com →Hook-first educational shorts channel. Medical curiosity content, 30–55 second format. AI-generated visuals pipeline with Veo 2.
Hook-first · AI Video · Veo 2 · TTS
Build Log →Skill for designing autonomous loops. Four-box test, five building blocks, specialist prompt engine with 34 pre-built prompts. Maker/Checker architecture.
Anthropic prompting · Maker/Checker
Writeup →Visualized Intelligence
Exploring AI consciousness and automated video production using Veo 2 and custom TTS pipelines.