---
title: "Buy Current Negative Price Signal"
method: POST
path: "/predict/negative-price"
---

# Buy Current Negative Price Signal

`POST /predict/negative-price`

## Request

- Base URL: `https://energy.halowerk.com`
- URL: `https://energy.halowerk.com/predict/negative-price`
- Auth: none declared

Battery, EV, and trading agents buy this endpoint to receive calibrated 2h/4h/6h negative-price probabilities, reviewed threshold profiles and an executable response policy.

## Request body

- object
  - `policy_profile` 'balanced' | 'utility' | 'precision' | 'recall': Selects the reviewed probability threshold profile without changing the underlying calibrated probabilities.

## 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)