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Reactions for cast
Group: Reaction APIs
Use this when you need: Reactions for cast.

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Usage

import { NeynarAPIClient, Configuration } from "@neynar/nodejs-sdk";

const client = new NeynarAPIClient(
  new Configuration({ apiKey: "YOUR_NEYNAR_API_KEY" })
);

const res = await client.fetchCastReactions({
  hash: "example", // required
  types: [], // Customize which reaction types the request should search for. This is a comma-separated string that can include the following values: \'likes\' and \'recasts\'. By default api returns both. To select multiple types, use a comma-separated list of these values.
  // viewerFid: 123, 
  // limit: 123, 
  // cursor: "example", 
});
console.log(res);

​
Parameters

ParameterTypeRequiredDescription
hashstring✅-
typesArray<FetchCastReactionsTypesEnum>✅Customize which reaction types the request should search for. This is a comma-separated string that can include the following values: &#39;likes&#39; and &#39;recasts&#39;. By default api returns both. To select multiple types, use a comma-separated list of these values.
viewerFidnumber❌-
limitnumber❌-
cursorstring❌-

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Response

Returns a RequestArgs object.

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Error Handling

try {
  const res = await client.fetchCastReactions({
    hash: "example",
    types: []
  });
  // use res
} catch (err) {
  // Axios/HTTP errors, invalid params, auth issues, etc.
  console.error(err);
}

​
Tips

  • Provide a viewerFid when supported to respect mutes/blocks and include viewer_context.
  • Keep requests scoped (e.g., use limit) to improve latency.
  • Cache results where sensible.