Farcaster

Connect Farcaster to Postline through Neynar to schedule casts and threads, and see likes, recasts and replies.

On this pageWhat you can postConnect your accountFor self-hostersAnalytics and plugsKnown issues

What you can post

  • Text up to 1,024 characters per cast.
  • Up to 2 images or videos, embedded by their Postline URL.
  • Threads: extra parts are published as replies, each one replying to the part before it.
  • Per-post setting: Channel (optional), for example dev. It applies to the first cast.

Connect your account

  1. In the Neynar developer portal, create an API key and an approved signer for your account.
  2. In Postline, click + Add next to Channels in the sidebar. Only workspace owners and admins can add channels.
  3. Choose Farcaster and fill in:
    • Neynar API key.
    • Signer UUID.
  4. Click Add channel.

For self-hosters

No server keys are needed. Each person uses their own Neynar API key and signer.

Media is linked from Postline's public URL, so APP_URL/uploads/... (or your S3 public URL) must be reachable from the internet.

Analytics and plugs

Postline collects likes, recasts (shown as shares) and replies (shown as comments) per cast. It does not track follower counts.

Plugs:

  • Auto-repost: not supported.
  • Follow-up: supported. Postline replies with a follow-up once the cast reaches the number of likes you set.

Known issues

  • The signer must be approved. Otherwise you see "That signer is not approved yet. Approve it in Warpcast first."