knowledge MCP server

knowledge

Your coding agents share one memory and hand work to each other across your own PCs — and you steer them from your phone. Self-hosted, plain Markdown.

Works with Claude Code, Codex and Antigravity (agy, Gemini) on Linux, macOS and Windows. Made for solo developers and homelabbers with two or more PCs and two or more agents who want their notes to stay on their own server.

• One memory, every agent. Tell Claude Code something on your laptop; Codex on your desktop knows it. Notes are plain Markdown files on your disk, found by meaning (98.8% R@5 on LongMemEval-S, embeddings run locally).
• Agents hand work to each other. One line in a note hands a task to another agent; it runs once, on one of your PCs, in its own git branch, and the result comes back to whoever asked.
• You steer from your phone. An inbox of what needs you, chats with the agents on your PCs, and Allow/Deny for each risky step, in a web app you install on your phone.

Made-up demo notes from demo/.

You can use it in two layers. Memory is the server plus one agent: five minutes, nothing else on your PCs. Cockpit adds the companion on each PC, so tasks run as workers and you can chat and approve from your phone.

Quickstart: Memory

You need Docker and about 1.5 GB RAM on the server, and git plus Python 3.9 or newer on each PC.

1. Run the server.

git clone https://github.com/To0wnn/knowledge && cd knowledge
mkdir data && echo "KNOWLEDGE_UI_PASSWORD=<a long password>" > .env
docker compose up -d

2. Get the first token. The first start makes one admin token and prints it once, with the next steps:

docker compose logs knowledge

Tokens for more devices: open http://localhost:8766/ui, sign in with the password and use the admin page (Admin); it shows the install line with your server address filled in.

3. Connect an agent on the same PC:

curl -fsSL https://raw.githubusercontent.com/To0wnn/knowledge/main/install.sh | sh   # Linux, macOS

irm https://raw.githubusercontent.com/To0wnn/knowledge/main/install.ps1 | iex        # Windows

It finds Claude Code, Codex and agy, asks y/n for each, and asks for the server address (http://localhost:8766) and the token. Run the same line again later to update. Only the plugin, without the companion (a work laptop, an SSH server): add -s -- --plugin-only after sh (docs/clients.md).

4. Try it. Tell Claude Code: "save to knowledge: we deploy with ./deploy.sh" (the installer turns Claude's own local auto-memory off, so it writes a memo on the server). Then start Codex (or agy), on this pc or another, and ask "how do we deploy?". It answers from the shared memory.

More than one PC? Put the server behind HTTPS (a reverse proxy) and add its host:port to KNOWLEDGE_ALLOWED_HOSTS in .env; then run the install line on every PC with a token per device. Over plain HTTP the password and tokens cross the network readable. All settings: docs/server.md.

Add the Cockpit

The install line also sets up the companion, a small local service on each PC (127.0.0.1:47321, starts at logon). With it:

• Workers. A task handed to an agent runs as a fresh headless session in its own git worktree and branch, at most one per agent by default, paused at 90% of the agent's usage limit. Workers are off until you tick "Workers allowed" on the companion's page. Follow a worker to watch it live in the chat view, steer it between steps, or take it over as a chat. docs/tasks.md
• Chats from your phone. Open the web UI on your phone and install it as an app; start a chat with Claude Code, Codex or agy in a project folder on one of your PCs. The answer streams in as in a terminal. Attach files or screenshots, or speak your message (any OpenAI-compatible speech-to-text server, one is bundled). docs/chats.md, docs/voice.md
• Approvals. Without YOLO, an agent in a chat may edit files in its folder and asks you for anything else: Allow once, Allow for this chat or Deny, on the phone or in the Inbox. docs/chats.md
• Inbox and Machines. One board of what needs you, what runs and what is done; per PC its agents, workers, usage, CPU/GPU/RAM load over 24 hours and a fixed set of remote actions (no remote shell). docs/companion.md

To use it from your phone, the server must be reachable from the phone over HTTPS. Link a project folder once by asking your agent to run the skill knowledge-init.

Compared with

Each of these is good at its own part; knowledge is the one that combines shared memory, hand-overs and a phone cockpit across several agents and PCs.

Tool	What it does well	Where knowledge differs
claude-mem	Automatic session memory for Claude Code, local	One server for Claude Code, Codex and agy on all your PCs; plain Markdown you edit
basic-memory	Local Markdown knowledge base over MCP	Adds shared multi-PC serving, house-rule lint, duplicate checks and agent hand-overs
Happy, Omnara, Claude Code Remote Control	Steer a running agent session from your phone	Also memory and tasks between agents; self-hosted, no third-party relay
Conductor, Superset	Run parallel agents in worktrees on one Mac or desktop	Workers on any of your PCs (Linux, macOS, Windows), started from a shared task list
Vibe Kanban	Kanban board that runs coding agents in worktrees	Tasks are lines in your notes, agents hand them to each other, steered from the phone

Honest limits

• A server to run: Docker, about 1.5 GB RAM, an image of about 500 MB (the embedding model ships in it).
• HTTPS for more than one PC or the phone: you put a reverse proxy in front.
• Agents: Claude Code, Codex and Antigravity (agy) only.
• Notifications: a Matrix room or an ntfy topic (set a few values in .env) and desktop notifications in an open browser tab; no phone push without one of those (docs/server.md).
• One admin: password sign-in is for one person; several people need a reverse proxy with forward auth.
• One maintainer, built for their own use first. Issues and pull requests welcome.

Known gaps: docs/ROADMAP.md.

How it works

• Server (server/): Python in one Docker container, MCP over streamable HTTP plus the web UI. All notes sit in memory; search and embeddings (EmbeddingGemma, ONNX) run locally, nothing leaves the machine.
• Notes: plain Markdown in data/, with a MEMORY.md index per project, a few house rules and a lint that keeps agent memory findable and free of duplicates.
• Plugin (plugin/): one folder that installs in Claude Code, Codex and agy: the MCP server, session-start context, hand-over checks each turn, and development skills. Tokens live in the OS keyring.
• Tasks: a hand-over is a line in a note (- open until <date> [<Owner>, <ID>] from <Requester>, start ...: <what>); the server decides when it may start and gives it to one machine only.
• Companion (clients/, plugin/companion): pulls tasks, actions and chat messages from the server; the server never connects to your PCs.

Documentation

Page	Contents
server.md	Running the server, .env settings, proxy sign-in, notifications
clients.md	The installer, updates, linking folders, Windows, skills, usage limits, secret guard
memory.md	MCP tools, session start, projects, lint, duplicates, secrets, search quality
tasks.md	Task lines, leases and nonces, results, workers, usage limit
companion.md	The companion, machines, own devices, remote control, YOLO safety
chats.md	Agents (what needs you, what runs, chats) and approvals
voice.md	Speaking chat messages: set up speech to text
web-ui.md	Views, routes, graph, installing as an app (PWA, cookies)
security.md	The security model in one page
development.md	Tests, CI, plugin versions, screenshots
ROADMAP.md	Known gaps

License

MIT, see LICENSE.

The server image includes the EmbeddingGemma model weights. Gemma is provided under and subject to the Gemma Terms of Use found at ai.google.dev/gemma/terms; its use is also subject to the Gemma Prohibited Use Policy. The weights are not modified.