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The gossip and replication server for Secure Scuttlebutt - a distributed social network

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ssb-server is an open source peer-to-peer log store used as a database, identity provider, and messaging system. It has:

  • Global replication
  • File-synchronization
  • End-to-end encryption

behaves just like a Kappa Architecture DB. In the background, it syncs with known peers. Peers do not have to be trusted, and can share logs and files on behalf of other peers, as each log is an unforgeable append-only message feed. This means ssb-servers comprise a global gossip-protocol mesh without any host dependencies.

If you are looking to use ssb-server to run a pub, consider using ssb-minimal-pub-server instead.

Join us in #scuttlebutt on freenode.

build status


How to Install

and create a working pub
  1. curl -o- | bash
  2. npm install -g node-gyp
  3. apt-get install autotools-dev automake
  4. nvm install 10
  5. nvm alias default 10
  6. Then to add

    to your available CLI commands, install it using the
    global flag:
    npm install -g ssb-server
  7. nano ~/
    and input:
while true; do
  ssb-server start
  sleep 3

Be sure to start the pub server from this script (as shown in step 10), as this script will run the pub server and restart it even if it crashes.

  1. mkdir ~/.ssb/
  2. nano ~/.ssb/config
    and input:
  "connections": {
    "incoming": {
      "net": [
        { "scope": "public", "host": "", "external": "Your Host Name or Public IP", "transform": "shs", "port": 8008 }
    "outgoing": {
      "net": [{ "transform": "shs" }]
  1. Now run

    sh ~/
    in a detachable session (e.g. screens)
  2. Detach the session and run

    ssb-server whoami
    to check to see if the server is working.
  3. Now is the time to think of a really cool name for your new pub server. Once you have it run:

ssb-server publish --type about --about {pub-id (this is the output from ssb-server whoami)} --name {Your pubs awesome name}
  1. Now it's time to create those invites! Just run
    ssb-server invite.create 1
    and send those codes to your friends.

Congratulations! You are now ready to scuttlebutt with your friends!

Note for those running

from a home computer. You will need to make sure that your router will allow connections to port 8008. Thus, you will need to forward port 8008 to the local IP address of the computer running the server (look up how to do this online). If you haven't done this step, when a client tries to connect to your server using the invite code, they will get an error that your invite code is not valid.


There are already several applications built on

, one of the best ways to learn about secure-scuttlebutt is to poke around in these applications.
  • patchwork is a discussion platform that we use to anything and everything concerning ssb and decentralization.
  • patchbay is another take on patchwork - it's compatible, less polished, but more modular. The main goal of patchbay is to be very easy to add features to.
  • git-ssb is git (& github!) on top of secure-scuttlebutt. Although we still keep our repos on github, primary development is via git-ssb.

It is recommended to get started with patchwork, and then look into git-ssb and patchbay.

Starting an

Command Line Usage Example

Start the server with extra log detail Leave this running in its own terminal/window

ssb-server start --logging.level=info

Javascript Usage Example

var Server = require('ssb-server')
var config = require('ssb-config')
var fs = require('fs')
var path = require('path')

// add plugins Server .use(require('ssb-master')) .use(require('ssb-gossip')) .use(require('ssb-replicate')) .use(require('ssb-backlinks'))

var server = Server(config)

// save an updated list of methods this server has made public // in a location that ssb-client will know to check var manifest = server.getManifest() fs.writeFileSync( path.join(config.path, 'manifest.json'), // ~/.ssb/manifest.json JSON.stringify(manifest) )

see: for custom configuration.


There are a variety of ways to call

methods, from a command line as well as in a javascript program.

Command Line Usage Example

The command

can also used to call the running

Now, in a separate terminal from the one where you ran

ssb-server start
, you can run commands such as the following: ```bash

publish a message

ssb-server publish --type post --text "My First Post!"

stream all messages in all feeds, ordered by publish time

ssb-server feed

stream all messages in all feeds, ordered by receive time

ssb-server log

stream all messages by one feed, ordered by sequence number

ssb-server hist --id $FEED_ID ```

Javascript Usage Example

Note that the following involves using a separate JS package, called ssb-client. It is most suitable for connecting to a running

and calling its methods. To see further distinctions between
, check out this handbook article.
var pull = require('pull-stream')
var Client = require('ssb-client')

// create a ssb-server client using default settings // (server at localhost:8080, using key found at /.ssb/secret, and manifest we wrote to `/.ssb/manifest.json` above) Client(function (err, server) { if (err) throw err

// publish a message server.publish({ type: 'post', text: 'My First Post!' }, function (err, msg) { // msg.key == hash(msg.value) // == your id // msg.value.content == { type: 'post', text: 'My First Post!' } // ... })

// stream all messages in all feeds, ordered by publish time pull( server.createFeedStream(), pull.collect(function (err, msgs) { // msgs[0].key == hash(msgs[0].value) // msgs[0].value... }) )

// stream all messages in all feeds, ordered by receive time pull( server.createLogStream(), pull.collect(function (err, msgs) { // msgs[0].key == hash(msgs[0].value) // msgs[0].value... }) )

// stream all messages by one feed, ordered by sequence number pull( server.createHistoryStream({ id: < feedId > }), pull.collect(function (err, msgs) { // msgs[0].key == hash(msgs[0].value) // msgs[0].value... }) ) })

Use Cases

's message-based data structure makes it ideal for mail and forum applications (see Patchwork). However, it is sufficiently general to be used to build:
  • Office tools (calendars, document-sharing, tasklists)
  • Wikis
  • Package managers


doesn't depend on hosts, its users can synchronize over WiFi or any other connective medium, making it great for Sneakernets.

is eventually-consistent with peers, and requires exterior coordination to create strictly-ordered transactions. Therefore, by itself, it would probably make a poor choice for implementing a crypto-currency. (We get asked that a lot.)

Getting Started

Key Concepts

Further Reading



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