API Reference — @tuwaio/siwx (CAIP-122 Authentication Layer)

buildMessage()

buildMessage(fields): string

Defined in: packages/siwx-core/src/buildMessage.ts:29 

Builds a CAIP-122 compliant sign-in message string from the provided fields. The output format follows the EIP-4361 / CAIP-122 specification exactly.

Parameters

fields

SiwxMessageFields

The structured fields to encode into the message.

Returns

string

A formatted, human-readable message string ready for wallet signing.

Example

const message = buildMessage({
  domain: 'app.tuwa.io',
  address: 'eip155:1:0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B',
  uri: 'https://app.tuwa.io',
  version: '1',
  chainId: 'eip155:1',
  nonce: 'abc123xyz',
  issuedAt: new Date().toISOString(),
  statement: 'Sign in to TUWA.',
});