> ## Documentation Index
> Fetch the complete documentation index at: https://docs.0xarchive.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Web3ChallengeResponse Schema

> Web3ChallengeResponse JSON Schema for 0xArchive OpenAPI responses and field contracts. Includes route metadata, schemas, examples, and implementation notes.

Source OpenAPI: 0xArchive API 1.5.0; 140 paths; 119 component schemas.

Use the JSON Schema block below for field-level types, required fields, nested objects, and enum values.

## Required Fields

No required fields are declared on this component schema.

## JSON Schema

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Web3ChallengeResponse",
  "type": "object",
  "properties": {
    "message": {
      "description": "SIWE message to sign with personal_sign (EIP-191)",
      "type": "string"
    },
    "nonce": {
      "description": "Single-use nonce (expires after 10 minutes)",
      "type": "string"
    }
  }
}
```

## Referenced By

* [POST /v1/auth/web3/challenge](/schemas/operations/web3-challenge)