Myelin

Single-binary MCP server · pre-release

The model forgets. The layer remembers.

Myelin gives any MCP host a persistent, per-project brain. It never calls a model.

Quickstart Read the docs

bare A bare pathway. Every session starts from nothing and travels the whole distance.

myelinated A practiced pathway. The signal skips what is already established.

A bare nerve fibre propagates a signal continuously along its whole membrane. A myelinated one is wrapped, with gaps between the wraps, and the signal leaps from gap to gap — saltatory conduction — arriving roughly a hundred times sooner. Not more force: less path left to travel.

What Myelin does

  1. 01

    It remembers

    Nothing is overwritten. A correction writes a new fact and supersedes the old one, so what you believed last March is still there when it matters.

    Memory hub
  2. 02

    It holds the process

    Workflows and skills served to the host as native MCP prompts, so the way work gets done travels to whichever model you are using.

    Process registry
  3. 03

    It checks the work

    A deterministic validate grades output against your standards in single-digit milliseconds, and hands back a line, a column, and a fix.

    Quality engine
  4. 04

    It proposes; you decide

    Repetition becomes a proposal. Nothing rewrites itself unasked, and safety-relevant settings can never be written automatically at all.

    Adaptation loop

In short

Four things that are true of it

  • No model calls

    No API keys, because there is nothing to call. Every behaviour is deterministic code.

  • Your keys

    Brains are encrypted under a key generated on your device. A self-hosted server holds none.

  • 8ms recall

    p95 over 5,000 memories. Asserted as a test, so a regression fails the build.

  • Runs anywhere

    One Go binary, one SQLite file. Claude Code, Claude Desktop, any MCP host.

Your AI, practiced.

Pre-release, under active development. No hosted service — you run it yourself.

Quickstart Repository