---
title: "x402 Paid Signal Test"
method: GET
path: "/demo/paid-sample"
---

# x402 Paid Signal Test

`GET /demo/paid-sample`

## Request

- Base URL: `https://energy.halowerk.com`
- URL: `https://energy.halowerk.com/demo/paid-sample`
- Auth: none declared

Cheapest end-to-end x402 purchase test. Always returns a 402 challenge without payment and the current full NegPrice decision after a valid USDC payment.

## Response `200`

Result. Settled.

- object

## Other responses

- `400`: Request body does not match inputSchema. Nothing settled.
- `402`: Payment required — 0.001 USDC (per_request). The challenge carries accepts, description and inputSchema.
- `500`: Internal error. Nothing settled.

---

[API](https://skmtc.dev/halowerk/apis/halowerk-energy.md) · [All operations](https://skmtc.dev/halowerk/apis/halowerk-energy/llms.txt) · [OpenAPI document](https://skmtc.dev/halowerk/apis/halowerk-energy/revisions/59458d8c787e?raw)