German Day-Ahead Electricity Prices by Hour (aWATTar)

awattarde/day-ahead-prices

Hourly day-ahead electricity market prices for Germany from aWATTar, in Eur/MWh, from the current hour up to about a day ahead. Each entry has a start and end time as epoch milliseconds, the market price and its unit. Use it to find the cheapest or most expensive upcoming hours, for example to schedule an electric car, heat pump or battery. The feed changes once a day (about 14:00) and the upstream fair-use budget is shared by every caller, so Eden Engine caps this tool at 50 calls a day in total: calls past that are refused until the next day, so do not poll. aWATTar data, passed through unmodified and served by Eden Engine; not an official aWATTar product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.

Data source

aWATTar

Data from aWATTar, derived from EPEX Spot day-ahead prices. Credit: aWATTar (aWATTar). Served by Eden Engine; not an official aWATTar product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "awattarde/day-ahead-prices" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "awattarde/day-ahead-prices" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "awattarde/day-ahead-prices", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "awattarde/day-ahead-prices", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 20, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "results"
  ],
  "properties": {
    "results": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "start_timestamp",
          "end_timestamp",
          "marketprice",
          "unit"
        ],
        "properties": {
          "unit": {
            "type": "string",
            "description": "Unit of marketprice, as the feed reports it: Eur/MWh."
          },
          "marketprice": {
            "type": "number",
            "description": "Day-ahead market price for the hour, in the unit given."
          },
          "end_timestamp": {
            "type": "integer",
            "description": "End of the hour, epoch milliseconds (UTC)."
          },
          "start_timestamp": {
            "type": "integer",
            "description": "Start of the hour, epoch milliseconds (UTC)."
          }
        },
        "additionalProperties": true
      },
      "description": "One entry per hour."
    }
  },
  "description": "The hourly day-ahead prices, in the order the feed returns them (earliest hour first)."
}