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Postbroad
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Farcaster scheduler. Schedule casts and know they went live.

Plan Farcaster casts next to every other network. Postbroad posts with a signer you approve, then reads each cast back before it marks it live.

Start for $0Farcaster limits
FCFarcasterAvailable now
What you connectA Farcaster account, with your own Neynar key and a signer you approveYour account or key
How live is confirmedChecked on the network

What you can post to Farcaster.

The rules Postbroad checks before a Farcaster post is scheduled. Facts marked as not yet confirmed are still being checked against Farcaster's own pages.

Text1,024 bytes. Up to 320 bytes is a regular cast; longer is a long cast.Confirmed on the network
PostsText casts and threads, in your feed or a channelConfirmed on the network
MediaLinks only. Images aren't offered yet.Confirmed on the network
As Postbroad applies them on 4 Nov 2026. Farcaster can change its rules; so does this table. Checked on the network.

Before you connect

  • A Farcaster account
  • Your own Neynar API key, and a signer approved for it

Let your agent post to Farcaster.

Your AI agent can draft and schedule Farcaster posts through Postbroad, with a preview first. Its drafts wait for you unless you allow more.

Ask your agentExample
Draft a Farcaster version of this week's launch post
for Northwind. Show me the preview, and don't
schedule anything until I say yes.
ChatGPTHosted MCPClaudeHosted MCPClaude CodeHosted MCPCursorHosted MCPOpenAI CodexHosted MCPGemini CLIHosted MCPOpenClawHosted MCPn8nREST APIMakeREST APIZapierREST API

Farcaster questions.

What can I post to Farcaster?

Text: 1,024 bytes. Up to 320 bytes is a regular cast; longer is a long cast. Posts: Text casts and threads, in your feed or a channel. Media: Links only. Images aren't offered yet.

Does Farcaster need to approve my app?

No review is needed. You connect a Farcaster account, with your own Neynar key and a signer you approve.

How do I know a Farcaster post went live?

After Farcaster accepts the post, Postbroad reads it back. Only then is it marked live, with the time and a link.

Can an AI agent post to Farcaster for me?

Yes, through the Postbroad MCP server or the API. Its drafts wait for you unless you switch on autonomy for the brand.

Every channel

Schedule your first Farcaster post.

Start for $0Connect your agent