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Create x402 signature
Group: Onchain APIs
Use this when you need: Create x402 signature.

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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.createX402Signature({
  xWalletId: "example", // Wallet ID to use for transactions
  xApiKey: "example", // required
  createX402SignatureRequest: "value", // required
});
console.log(res);

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Parameters

ParameterTypeRequiredDescription
xWalletIdstring✅Wallet ID to use for transactions
xApiKeystring✅-
createX402SignatureRequestCreateX402SignatureRequest✅-

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Response

Returns a RequestArgs object.

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Error Handling

try {
  const res = await client.createX402Signature({
    xWalletId: "example",
    xApiKey: "example",
    createX402SignatureRequest: "value"
  });
  // use res
} catch (err) {
  // Axios/HTTP errors, invalid params, auth issues, etc.
  console.error(err);
}
📖 API Reference: createX402Signature For detailed information about the HTTP endpoint, request/response schemas, and additional examples, see the complete API documentation.

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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.