Kybase

Name: Kybase
Author: Kyrzin

by Kyrzinversion 0.2.4i★ –iRuns on your computer

Registry nameio.github.Kyrzin/kybase

Install

Overview

Description from the maker (original English)

Self-hosted Markdown memory for AI agents: notes you can read and edit, with hybrid search.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Search & AI memory
You need to fill in: GOOGLE_API_KEY, OPENAI_API_KEY, DATABASE_URL

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: KYBASE_DATA_DIR, EMBEDDING_PROVIDER, OLLAMA_URL, OLLAMA_MODEL, GOOGLE_API_KEY, OPENAI_API_KEY, DATABASE_URL

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "kybase": {
      "command": "npx",
      "args": [
        "-y",
        "kybase-mcp"
      ],
      "env": {
        "KYBASE_DATA_DIR": "your-value",
        "EMBEDDING_PROVIDER": "your-value",
        "OLLAMA_URL": "your-value",
        "OLLAMA_MODEL": "your-value",
        "GOOGLE_API_KEY": "your-value",
        "OPENAI_API_KEY": "your-value",
        "DATABASE_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add kybase --env KYBASE_DATA_DIR=your-value --env EMBEDDING_PROVIDER=your-value --env OLLAMA_URL=your-value --env OLLAMA_MODEL=your-value --env GOOGLE_API_KEY=your-value --env OPENAI_API_KEY=your-value --env DATABASE_URL=your-value -- npx -y kybase-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "kybase": {
      "command": "npx",
      "args": [
        "-y",
        "kybase-mcp"
      ],
      "env": {
        "KYBASE_DATA_DIR": "your-value",
        "EMBEDDING_PROVIDER": "your-value",
        "OLLAMA_URL": "your-value",
        "OLLAMA_MODEL": "your-value",
        "GOOGLE_API_KEY": "your-value",
        "OPENAI_API_KEY": "your-value",
        "DATABASE_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "kybase": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "kybase-mcp"
      ],
      "env": {
        "KYBASE_DATA_DIR": "your-value",
        "EMBEDDING_PROVIDER": "your-value",
        "OLLAMA_URL": "your-value",
        "OLLAMA_MODEL": "your-value",
        "GOOGLE_API_KEY": "your-value",
        "OPENAI_API_KEY": "your-value",
        "DATABASE_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

KYBASE_DATA_DIR env
Where the embedded database and instance secret live. Defaults to ~/.kybase
EMBEDDING_PROVIDER env
Embedding provider for semantic search
OLLAMA_URL env
Ollama endpoint for local embeddings. Without any provider, full-text search still works
OLLAMA_MODEL env
Ollama embedding model
GOOGLE_API_KEY secret env
Google API key, when EMBEDDING_PROVIDER=google. Sends note text to Google
OPENAI_API_KEY secret env
OpenAI API key, when EMBEDDING_PROVIDER=openai. Sends note text to OpenAI
DATABASE_URL secret env
Use an existing Kybase Postgres instead of the embedded one (migrations are left to the app)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Kyrzin, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

More stars than 0% of the other 7251 servers in this category
Published to the registry more recently than 82% of the other 7251 servers in this category
Basic checks equal to or better than 100% of the other 7251 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Kybase safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: GOOGLE_API_KEY, OPENAI_API_KEY, DATABASE_URL

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.4) reached the registry 8 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Exa

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Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

kybase-mcp

Persistent memory for AI agents, as a single command:

npx kybase-mcp

No Docker, no database to install, no server to run. The first start creates a local knowledge base under ~/.kybase and speaks MCP over stdio. Your notes are plain Markdown in Postgres — running on your machine, leaving it only if you choose a cloud embedding provider.

This is the same MCP server the full Kybase app exposes over HTTP. Use this package when you want memory for a local agent; use the full app when you also want the web UI, the knowledge graph view, sharing, and access for several agents at once.

Connect an agent

Claude Code — .mcp.json in your project, or claude mcp add:

"mcpServers": { "kybase": { "command": "npx", "args": ["-y", "kybase-mcp"] } } }

Claude Desktop — the same block in claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json, Windows: %APPDATA%\Claude\claude_desktop_config.json).

Cursor — the same block in .cursor/mcp.json or ~/.cursor/mcp.json.

Several clients on one machine can use it at once: the first process to start owns the database, and the others connect to that process.

Restart the client and ask it to remember something. It gets 18 tools for reading, searching, writing, and linking notes.

Claude Desktop, one click — download kybase-mcp- .mcpb from Releases and open it; the data folder and embedding provider are set in the extension's settings.

The server is listed in the official MCP Registry as io.github.Kyrzin/kybase.

Search

Full-text search works immediately, in English and Russian, accent- and case-insensitive.

Semantic search — finding a note by meaning when it shares no words with your question — needs an embedding provider. The local option is Ollama:

ollama pull embeddinggemma

OLLAMA_URL=http://localhost:11434 npx kybase-mcp

Existing notes are embedded in the background as soon as a provider is available; indexing_status reports progress. Without one, nothing breaks — semantic search simply stays idle.

Reading your notes

The embedded database is not a folder of .md files, so this writes the whole vault out as one:

kybase-mcp export vault.zip

Plain Markdown with frontmatter, folders as directories, [[wikilinks]] intact — open it in any editor. It is also exactly the archive the full Kybase app accepts under Settings → Import .zip, so starting here and moving to the web UI later costs one command in each direction.

Configuration

Every variable is optional.

Variable	Default	What it does
`KYBASE_DATA_DIR`	`~/.kybase`	Where the database and instance secret live.
`DATABASE_URL`	(unset)	Point at an existing Kybase Postgres instead of the embedded one. In this mode the package does not run migrations — the app that owns the schema does.
`EMBEDDING_PROVIDER`	`ollama`	`ollama`, `google`, or `openai`.
`OLLAMA_URL`	(unset)	e.g. `http://localhost:11434`. Enables semantic search.
`OLLAMA_MODEL`	`embeddinggemma`	Multilingual by default; `nomic-embed-text` is smaller and English-leaning.
`GOOGLE_API_KEY` / `OPENAI_API_KEY`	(unset)	Cloud embedding providers. Picking one sends your note text to that provider.

Build from source

The package bundles code from the main repository, so build it from a checkout rather than from this directory alone:

git clone https://github.com/Kyrzin/kybase.git

cd kybase/packages/kybase-mcp npm install # also builds, via the prepare script npm install -g . # puts kybase-mcp on your PATH

Your data

Everything is under KYBASE_DATA_DIR:

pgdata/ — the database itself (Postgres compiled to WebAssembly, with pgvector). Copy the directory to back it up.
secret — generated on first run, 0600. It encrypts any embedding provider API keys you store. Keep it with the data.
run/ — the unix socket the database listens on, in a 0700 directory. It has no password, so file permissions are the access control. Windows cannot listen on a socket path, so there the database binds an unused loopback port instead — reachable by other processes running as you, and never from another machine. KYBASE_EMBEDDED_TCP=1 forces that mode on Unix too, for a data directory on a filesystem that cannot host a socket.

Expect the process to hold a few hundred MB of memory while it runs: the embedded database is a full Postgres, and it lives inside it. Pointing DATABASE_URL at a Postgres you already run avoids that entirely.

Note content is plain Markdown and every note is readable through the MCP tools, so an agent can always read the whole vault back out, and kybase-mcp export writes it out as files — see Reading your notes.

License

AGPL-3.0-only.

Kybase

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

kybase-mcp

Connect an agent

Search

Reading your notes

Configuration

Build from source

Your data

License