Every conversation starts from zero. Mycelium gives your AI a persistent, private memory that lives on your machine — in files you own. Now available as an open framework and a native macOS app.
01 — The Problem
You re-explain who you are. What you're building. What you decided last week. Your AI is brilliant — but it has no memory.
The context you've built together is scattered across chat logs you'll never search. Trapped in platforms you don't control. Invisible to both you and your AI. Every session resets the clock.
02 — The Solution
Mycelium is a framework that installs persistent, locally-owned AI memory into any knowledge-intensive context. Three layers. One system.
The Constitution
A single markdown file your AI reads first, every session. It contains the operating rules, reading order, write behaviour, and constraints. Without it, a vault is just a folder of notes.
The Memory
A living knowledge graph — atomic markdown notes, meaningfully linked, growing with every conversation. One concept per file. Readable by human and AI alike.
The Product
An open framework that installs and tends both layers. Handles onboarding, upgrades, audits, and maintenance. Use it from the CLI or through Mycelium Desktop, a native macOS companion app.
03 — How It Works
Plain markdown. Claude Code CLI. No dependencies. Mycelium works inside the tools you already use.
Run the installer with Claude Code CLI, or use Mycelium Desktop to install with one click. The framework scaffolds the vault structure, identity system, and persona files in under a minute.
Tell your AI who you are and who it should be. Your persona files are the relational memory that shapes every session — how it responds, when it pushes back, what it remembers about you.
Every session builds the memory. Decisions, context, project state — structured as atomic notes that compound into living knowledge. Your AI proposes updates to your persona files as the relationship deepens.
Every session starts here
No re-explaining. No lost threads. Your AI reads the vault, confirms what it knows, and picks up exactly where you left off.
It knows who you are, what you've been working on, and what's active. Like a colleague who actually took notes.
04 — Who It's For
If your work depends on accumulated context and you're tired of re-explaining it every session, Mycelium is for you.
Developers, founders, indie hackers — people shipping with AI across dozens of sessions. You carry project context, architecture decisions, and preferences that reset every conversation.
Researchers, writers, strategists — anyone whose work compounds over time and whose AI should know what happened last week without being told.
If you've ever re-explained your stack, your preferences, or your last three decisions to an AI — Mycelium exists so you never have to again.
Design Principles
No cloud. No subscription. No vendor lock-in. Your vault remembers what you built. Your persona files remember who you are. Both are plain text on your disk. If you stop using Mycelium tomorrow, your knowledge stays with you.
Questions? halicon@gmail.com