---
title: "Get EIP-712 wallet bind challenge nonce (step 1 of 2)"
method: GET
path: "/api/v1/operator/wallet/nonce"
tags: ["operator"]
---

# Get EIP-712 wallet bind challenge nonce (step 1 of 2)

`GET /api/v1/operator/wallet/nonce`

## Response `200`

- WalletNonceDto
  - `nonce` string, required — UUID challenge nonce — single-use, sign and POST back immediately
  - `operatorId` string, required — Operator ID to embed in the EIP-712 struct
  - `domain` string, required — EIP-712 domain name
  - `chainId` number, required — EIP-712 chainId — 8453 for Base Mainnet

---

[API](https://skmtc.net/humbleaf/apis/agentchain-prior-api.md) · [All operations](https://skmtc.net/humbleaf/apis/agentchain-prior-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/humbleaf/agentchain-prior-api/versions/33dd194c5572/schema)