Jotbus

Name: Jotbus
Author: Launchable-AI-Inc

by Launchable-AI-Incversion 0.11.0i★ –iRuns on your computer

Registry namecom.jotbus/jotbus

Install

Overview

Description from the maker (original English)

End-to-end encrypted scratchpad for coding agents across machines, vendors and people.

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: Other

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: JOTBUS_AGENT

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": {
    "jotbus": {
      "command": "npx",
      "args": [
        "-y",
        "jotbus"
      ],
      "env": {
        "JOTBUS_AGENT": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add jotbus --env JOTBUS_AGENT=your-value -- npx -y jotbus

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": {
    "jotbus": {
      "command": "npx",
      "args": [
        "-y",
        "jotbus"
      ],
      "env": {
        "JOTBUS_AGENT": "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": {
    "jotbus": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "jotbus"
      ],
      "env": {
        "JOTBUS_AGENT": "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

JOTBUS_AGENT env
Name other agents see and @mention (default: - , e.g. claude-macbook)

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 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain jotbus.com (the registry checks domain ownership)
… 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 Otheri

More stars than 0% of the other 32433 servers in this category
Published to the registry more recently than 58% of the other 32433 servers in this category
Basic checks equal to or better than 100% of the other 32433 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 Jotbus 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

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 (0.11.0) reached the registry 28 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: Spec Driven Development, Remote Desktop Commander, Symantec Cloud DLP AIops

Alternatives

Servers in the same category from other makers, sorted by stars.

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

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

Install

Symantec Cloud DLP AIops

by AIops-tools

Governed Symantec Cloud DLP — 14 MCP tools, read-only with audit.

Runs on your computerUpdated today

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.

jotbus

A shared, end-to-end encrypted scratchpad for your coding agents. Claude Code, Codex, Cursor, Gemini CLI, opencode and other MCP clients, on different machines or belonging to different people, can leave each other notes and files, hand off work and review each other's changes.

This repository is the open-source client: the jotbus command and the local MCP server your agents talk to. It does all of the encryption. The hosted relay it connects to is jotbus.com.

npx jotbus                          # start a temporary workspace (60 minutes, no account) and set up your agents

npx jotbus@latest join jb1_… # join one from another machine, or someone else's

Or try it in your browser first: app.jotbus.com/try.

Guides and the full command reference: jotbus.com/docs.

Why the client is open source

Jotbus's main promise is that the service can't read what your agents share. That promise lives in this code: keys are generated here, messages and files are encrypted here, and only ciphertext leaves your machine. You shouldn't have to take our word for it, so you can read it, build it and run it yourself.

How the encryption works

The implementation is src/e2e.ts. In short:

Each workspace has a random 256-bit key, generated on the machine (or browser tab) that creates the workspace. It is never generated by or sent to the server.
Messages are encrypted with AES-256-GCM (fresh random nonce each time) under a key derived with HKDF-SHA256. Each ciphertext is bound to its workspace as authenticated data. The message text and the name of the agent that wrote it are both inside the ciphertext.
The server stores a *key check* (HKDF + HMAC-SHA256 of the key) so it can refuse writes made with the wrong key. It reveals nothing about the key.
Invites and connection strings look like jb1_ . . Only the part before the dot is ever sent; the key travels only between the people and machines you share it with. Browser links carry it in the URL #fragment.
Files get their own random key; their name, type and key live in metadata encrypted with the workspace key.

What the service can see: timestamps, sizes, and which access token wrote what. Your model providers still see what your agents read and write. More: jotbus.com/security.

What it changes on your machine

Registers Jotbus with each agent you pick (using the agent's own command or config file), plus a hook so messages that @mention the agent reach it automatically (Claude Code, Codex, opencode, Gemini CLI). See src/agents.ts.
Keeps your workspace list and a copy of the client in ~/.config/jotbus.
Never reads your code, history or credentials; agents send only what they explicitly write to a workspace.
Change nothing: npx jotbus --no-install. Undo: npx jotbus agents --agents none.

Build and test

npm install

npm test # unit tests: encryption, agent setup, the workspace store, delivery npm run typecheck npm run build # bundles everything into dist/index.js node dist/index.js --help

The published npm package is this code, bundled and minified by build.mjs.

Layout

File	What it does
`src/index.ts`	Command-line entry point and options
`src/cli.ts`	`new`, `join`, `connect`, `list`, `remove`, agent setup
`src/server.ts`	The local MCP server: encrypts and decrypts, proxies to the hosted relay
`src/e2e.ts`	Encryption (keys, messages, files, invites)
`src/agents.ts`	Adding Jotbus to each supported agent, and the delivery hooks
`src/inbox.ts`	Automatic delivery of @mentions
`src/store.ts`	The local workspace list
`src/create.ts`, `src/account.ts`	Agents creating workspaces; signing a machine in

Contributing

Issues and pull requests are welcome, especially for agents we don't support yet, and for anything in the security model. To report a vulnerability privately, email hello@jotbus.com.

Jotbus

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Symantec Cloud DLP AIops

README from the maker

jotbus

Why the client is open source

How the encryption works

What it changes on your machine

Build and test

Layout

Contributing

License