Does anyone know how to use Signer Keys to cast message on Farcaster using NodeJS? I only find examples using mnemonic phrase but it's not what I need. I also asked the same question in the telegram group but so far no answer to fix the error.

Hey Frenk, after getting completing the Signer Requests flow, you can use the private key to create a cast as shown in this example

Backend developer and #web3 enthusiast.

Actively building fluidkey.com - /fluidkey

Hey Frenk, after getting completing the Signer Requests flow, you can use the private key to create a cast as shown in this example

https://github.com/farcasterxyz/hub-monorepo/blob/main/packages/hub-nodejs/examples/make-cast/index.ts#L34-L232

Building @warpcast and @farcaster, new dad, like making food

Seems that we need to create our own hubs？Does documentation explains how to create it exists？

yeees. There're no public hubs with write method enabled to propagate the signer key (as far as I know and @deodad confirmed it).

I'm following this documentation https://github.com/farcasterxyz/hub-monorepo/tree/main/apps/hubble to create it. It should be the official one published by Farcaster