GET
/
v1
/
reactionById
By FID or cast
curl --request GET \
  --url https://hub-api.neynar.com/v1/reactionById \
  --header 'x-api-key: <api-key>'
{
  "hash": "0xd2b1ddc6c88e865a33cb1a565e0058d757042974",
  "hashScheme": "HASH_SCHEME_BLAKE3",
  "signature": "aSDinaTvuI8gbWludGxpZnk=",
  "signatureScheme": "SIGNATURE_SCHEME_ED25519",
  "signer": "<string>",
  "data": {
    "type": "MESSAGE_TYPE_CAST_ADD",
    "fid": 2,
    "timestamp": 48994466,
    "network": "FARCASTER_NETWORK_MAINNET",
    "reactionBody": {
      "type": "Like",
      "targetCastId": {
        "fid": 2,
        "hash": "0x03aff391a6eb1772b20b4ead9a89f732be75fe27"
      },
      "targetUrl": "https://www.example.com/article"
    }
  }
}

Authorizations

​
x-api-key
string
header
default:NEYNAR_API_DOCS
required

API key to authorize requests

Query Parameters

​
fid
integer
required

The FID of the reaction's creator

​
target_fid
integer
required

The FID of the cast's creator

​
target_hash
string
required

The cast's hash

​
reaction_type
enum<string>
default:Like
required

Type of interaction a user can have with content on the Farcaster network.

  • Like: Express appreciation for the target content. Similar to "likes" or "favorites" on other platforms.
  • Recast: Share the target content with the user's followers, similar to a "retweet" or "reblog". Helps increase content visibility.
Available options:
Like,
Recast
Example:

"Like"

Response

200
application/json

The requested Reaction.

The response is of type object.