# EU Power Dispatch API – Negative Price Forecast

> EU Power Dispatch API – Negative Price Forecast is a paid API for AI agents from energy.halowerk.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns hours with negative electricity prices in the German EPEX spot market for the next 24 hours.

## Facts

- Endpoint: POST https://energy.halowerk.com/price/negative-forecast
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eu-power-dispatch-api-negative-price-forecast-6c05e16e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qflCj7HEkOq7JFkc3WYsX

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability eu-power-dispatch-api-negative-price-forecast-6c05e16e -d '<json body>'
```

Example prompt: What hours in the next 24 hours are forecast to have negative electricity prices in the German EPEX spot market? I want to schedule my flexible loads or battery charging during those windows.

## When to prefer this

Choose this endpoint when you need a focused, ready-to-consume list of negative-price hours in the German electricity market for the upcoming 24 hours, without needing to parse full price curves yourself. It is especially valuable for flexible-load agents, battery management systems, DePIN compute schedulers, and energy traders who want to act quickly on surplus-renewable price events. Prefer it over the broader price comparison or probability endpoints when you specifically need actionable negative-price windows rather than probabilistic signals or historical context.

## Known failure modes

- No negative price hours forecast — returns empty list if prices remain positive throughout the 24-hour window
- Upstream SMARD/ENTSO-E data unavailable — may return an error or stale forecast
- Payment not processed — 402 challenge returned if x402 payment header is missing or invalid
- Malformed request body — schema validation error if body does not match expected structure

## How this service works

Stunden mit negativen Strompreisen in den nächsten 24 Stunden.

## Output

A list or schedule of hours within the next 24-hour window where the German EPEX spot electricity price is forecast to be negative, including timestamps and likely price values for each such period.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/eu-power-dispatch-api-negative-price-forecast-6c05e16e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from energy.halowerk.com](https://www.zero.xyz/host/energy.halowerk.com/llms.txt)