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POST
Post a cast

Easiest way to start is to clone our repo that has sign in w/ Farcaster and writes. Ensure you’re using a signer_uuid that was made with the same API key.

Node.js SDK

πŸ”— SDK Method: publishCast Use this API endpoint with the Neynar Node.js SDK for typed responses and better developer experience.

Authorizations

x-api-key
string
header
default:NEYNAR_API_DOCS
required

API key to authorize requests

Body

application/json
signer_uuid
string
required

UUID of the signer. signer_uuid is paired with API key, can't use a uuid made with a different API key.

Example:

"19d0c5fd-9b33-4a48-a0e2-bc7b0555baec"

channel_id
string

Channel ID of the channel where the cast is to be posted. e.g. neynar, farcaster, warpcast

Example:

"neynar"

embeds
PostCastReqBodyEmbeds Β· object[]
Maximum array length: 2
idem
string

An Idempotency key is a unique identifier for the request. Note:

  1. This is used to prevent duplicate requests. Use the same idem key on retry attempts.
  2. This should be a unique identifier for each request.
  3. Recommended format is a 16-character string generated by the developer at the time of making this request.
parent
string

parent_url of the channel the cast is in, or hash of the cast

parent_author_fid
integer<int32>

The unique identifier of a farcaster user or app (unsigned integer)

Required range: x >= 0
Example:

3

text
string

Response

Success

cast
object
required
success
boolean
required