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GET
By FID or cast

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

The requested Reaction.

hash
string
required
Pattern: ^0x[0-9a-fA-F]{40}$
Example:

"0xd2b1ddc6c88e865a33cb1a565e0058d757042974"

hashScheme
enum<string>
default:HASH_SCHEME_BLAKE3
required

Type of hashing scheme used to produce a digest of MessageData. - HASH_SCHEME_BLAKE3: Default scheme for hashing MessageData

Available options:
HASH_SCHEME_BLAKE3
signature
string<byte>
required
Pattern: ^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$
signatureScheme
enum<string>
default:SIGNATURE_SCHEME_ED25519
required

Type of signature scheme used to sign the Message hash

  • SIGNATURE_SCHEME_ED25519: Ed25519 signature (default)
  • SIGNATURE_SCHEME_EIP712: ECDSA signature using EIP-712 scheme
Available options:
SIGNATURE_SCHEME_ED25519,
SIGNATURE_SCHEME_EIP712
signer
string
required
Pattern: ^0x[0-9a-fA-F]+$
data
object
required

Represents a user's reaction to content on the Farcaster network. Reactions can be likes or recasts of casts, allowing users to express appreciation or share content with their followers.