---
title: "Get a signed liveness challenge nonce with randomized sequence"
method: GET
path: "/api/v1/verify/age/challenge"
tags: ["Age Verification"]
---

# Get a signed liveness challenge nonce with randomized sequence

`GET /api/v1/verify/age/challenge`

## Request

- Base URL: `https://api.tuteliq.ai`
- URL: `https://api.tuteliq.ai/api/v1/verify/age/challenge`
- Auth: one of:
  - HTTP bearer
  - API key in header `x-api-key`

Returns a server-signed nonce and a randomized challenge sequence. The client must follow the prescribed order.

## Response `200`

Default Response

- object
  - `nonce` string
  - `signature` string
  - `expires_at` number
  - `challenges` string[]

## Changes

- **2026-10-19** `8490332e0031`: 1 info
  - added the optional property `challenges` to the response with the `200` status

[Operation history](https://skmtc.dev/tuteliq/apis/tuteliq-api/changes/api/v1/verify/age/challenge/get.md)

---

[API](https://skmtc.dev/tuteliq/apis/tuteliq-api.md) · [All operations](https://skmtc.dev/tuteliq/apis/tuteliq-api/llms.txt) · [OpenAPI document](https://skmtc.dev/tuteliq/apis/tuteliq-api/revisions/8490332e0031?raw)