# Halowerk Day-Ahead Power Price Snapshot

> Halowerk Day-Ahead Power Price Snapshot is a paid API for AI agents from finanz.halowerk.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns quarter-hourly or hourly day-ahead electricity prices for a European bidding zone, including min, max, mean, cheapest/dearest interval, and negative-price interval count.

## Facts

- Endpoint: POST https://finanz.halowerk.com/v1/commodity-snapshot
- 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/halowerk-day-ahead-power-price-snapshot-295ba7d8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_du-6uZPITb4T83kHW0B-R

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 halowerk-day-ahead-power-price-snapshot-295ba7d8 -d '<json body>'
```

Example prompt: Pull the day-ahead electricity price snapshot for the DE-LU bidding zone for tomorrow — I need the full hourly curve, plus the cheapest and most expensive hour and how many intervals go negative, so I can decide when to charge the battery.

## When to prefer this

Choose this endpoint when you need structured day-ahead electricity price analytics for a specific European bidding zone, especially when the decision logic requires knowing the cheapest/dearest hour, the presence of negative prices, or the statistical distribution of prices across the day. It is ideal for load-shifting automation, battery charge scheduling, energy cost monitoring, and any application that needs commercially usable (CC BY 4.0) European power price data without scraping SMARD directly.

## Known failure modes

- Unknown or unsupported bidding zone identifier returns an error
- Date outside available SMARD data range returns no data
- Malformed date format in request body causes a 400 bad request
- Energy-Charts upstream data unavailable causes a 5xx or empty response
- Resolution parameter not matching supported values (quarter-hourly/hourly) returns validation error

## How this service works

Day-ahead power prices for a European bidding zone from Energy-Charts, published by Fraunhofer ISE from Bundesnetzagentur SMARD data under CC BY 4.0 and therefore usable commercially with attribution. Returns the quarter-hourly or hourly curve with minimum, maximum, mean, the cheapest and the dearest hour, and how many intervals carry a negative price — the figures a load-shifting or battery decision actually turns on.

## Output

Returns a time-series of quarter-hourly or hourly day-ahead electricity prices for the requested European bidding zone, along with summary statistics: minimum, maximum, and mean price across the day; the timestamp and price of the cheapest interval; the timestamp and price of the most expensive interval; and a count of intervals where the price is negative.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "zone": {
   "type": "string",
   "default": "DE-LU",
   "maxLength": 20,
   "description": "European bidding zone, e.g. DE-LU, FR, NL, AT, CH, PL."
  },
  "include_curve": {
   "type": "boolean",
   "default": false,
   "description": "Return the full price curve as well as the statistics."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-day-ahead-power-price-snapshot-295ba7d8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from finanz.halowerk.com](https://www.zero.xyz/host/finanz.halowerk.com/llms.txt)