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A Hub is a node in the Farcaster network that stores a copy of all data.

Hubs accept messages from users and replicate them to each other in real-time in a peer-to-peer fashion. A Hub will store every active message on the network and can be used to submit new messages. Running a Hub is a great way to get permissionless access to data and to help with decentralizing the network.

Running a Hub

A Hub is a specification that can be implemented in different ways, just like Ethereum or Bitcoin nodes. To run a Hub, you'll need to choose an implementation first. The available implementations are:

  • Hubble, a Typescript implementation

We recommend running Hubs on an always-on server so that it stays in sync even when you are not using your computer.


A Hub can be run on any machine that has:

  • A public IP address
  • 8 GB of RAM
  • 2 CPU cores or vCPUs
  • 20 GB of free storage

The storage requirements will grow over time as more users join the network. At 10M daily active users we expect storage to approach 64TB.