Farcaster: New Cast

Trigger Social

Triggers when a new cast (post) is published on Farcaster. Optionally filter by author FID, mentioned users, text pattern, or channel URL. Powered by Neynar webhooks.

At a Glance

Field	Value
Trigger ID	farcaster-new-cast
Category	Social
Tags	farcaster, social, cast, post, neynar, webhook

Trigger Configuration

Field	Type	Required	Description
authorFids	array	No	Filter by author Farcaster IDs (FIDs). Only casts from these users will trigger the workflow.
mentionedFids	array	No	Filter by mentioned Farcaster IDs. Only casts mentioning these users will trigger.
textPattern	string	No	Regex pattern to match against cast text (e.g., '\bbase\b' for word 'base').
channelUrl	string	No	Filter by Farcaster channel URL (e.g., 'https://warpcast.com/~/channel/base'\).

Trigger Result

Field	Type	Required	Description
triggeredAt	string	Yes	Timestamp when the cast was detected (UTC, RFC3339 format)
eventType	string	Yes	Neynar event type
body	object	Yes	Full Neynar cast event data including hash, author (fid, username, display_name, pfp_url), text, timestamp, embeds, channel, reactions, replies, mentioned_profiles

Workflow Root Example

json
{  "nodes": {    "root": {      "type": "farcaster-new-cast",      "payload": {        "authorFids": [],        "mentionedFids": [],        "textPattern": "Workflow completed",        "channelUrl": "https://example.com/webhook"      },      "children": [        "log_event"      ]    },    "log_event": {      "type": "log",      "payload": {        "message": "Triggered at {{$trigger.triggeredAt}}"      },      "children": []    }  }}

Downstream nodes can use {{$trigger.triggeredAt}} and any result fields listed above. Event triggers usually expose the raw source payload under a field such as event, body, trade, or raw.