> ## Documentation Index
> Fetch the complete documentation index at: https://gnosispay-feat-v2-auth-module.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Siwe message

> Retrieve the message that users need to Sign in with Ethereum (SIWE)



## OpenAPI

````yaml https://gp-auth-module.prod.gnosispay.com/openapi.json get /auth/siwe/{address}
openapi: 3.0.0
info:
  version: 1.0.0
  title: SIWE Authentication API
  description: Sign In With Ethereum authentication service
servers:
  - url: https://gp-auth-module.prod.gnosispay.com
    description: API server
security: []
paths:
  /auth/siwe/{address}:
    get:
      tags:
        - Auth
      summary: Get Siwe message
      description: Retrieve the message that users need to Sign in with Ethereum (SIWE)
      parameters:
        - schema:
            type: string
            description: Ethereum address
          required: true
          description: Ethereum address
          name: address
          in: path
        - schema:
            type: string
            minLength: 1
            description: Domain requesting authentication
          required: true
          description: Domain requesting authentication
          name: domain
          in: query
        - schema:
            type: string
            format: uri
            description: URI of the application
          required: true
          description: URI of the application
          name: uri
          in: query
        - schema:
            type: string
            minLength: 1
            description: Application name to display in wallet
          required: true
          description: Application name to display in wallet
          name: appName
          in: query
      responses:
        '200':
          description: Siwe message retrieved successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetSiweMessageResponse'
        '400':
          description: Bad request - invalid or missing query parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationError'
        '422':
          description: >-
            Unable to create SIWE message due to validation or challenge
            creation failure
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    GetSiweMessageResponse:
      type: object
      properties:
        success:
          type: boolean
          enum:
            - true
        message:
          type: string
      required:
        - success
        - message
    ValidationError:
      type: object
      properties:
        success:
          type: boolean
          enum:
            - false
        error:
          type: object
          properties:
            name:
              type: string
              enum:
                - ValidationError
            message:
              type: string
          required:
            - name
            - message
      required:
        - success
        - error
    Error:
      type: object
      properties:
        success:
          type: boolean
          enum:
            - false
        error:
          type: string
      required:
        - success
        - error

````