---
title: "Attestation challenge"
method: GET
path: "/api/v1/agents/challenge"
tags: ["agents"]
---

# Attestation challenge

`GET /api/v1/agents/challenge`

## Request

- Base URL: `https://predict.dex.mk`
- URL: `https://predict.dex.mk/api/v1/agents/challenge`
- Auth: none declared

The canonical 'predictDEX Agent Attestation v1' message for your address. Sign it with EIP-191 personal_sign within 10 minutes.

## Query parameters

- `address` string, required

## Response `200`

Challenge

- object

## Other responses

- `400`: Invalid or missing parameter; body {error, message}
- `429`: Too many requests; honour Retry-After
- `502`: Polymarket did not answer in time; retry shortly

---

[API](https://skmtc.dev/dex/apis/predictdex-api.md) · [All operations](https://skmtc.dev/dex/apis/predictdex-api/llms.txt) · [OpenAPI document](https://skmtc.dev/dex/apis/predictdex-api/revisions/34386b074c69?raw)