Voltcast

European day-ahead electricity prices (43 zones), accuracy-published forecasts, carbon, optimize.

Quick Install

Automated & IDE Setup

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Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "voltcast": {
      "command": "npx",
      "args": [
        "-y",
        "voltcast-mcp"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Capabilities & Tool Schemas (6)Self-reported

Inspect callable tools, capabilities, and parameters exposed to AI agents by Voltcast.

list_zones

The zone registry (codes, names, currencies)

get_prices

Day-ahead prices for a zone/date at native market intervals

get_forecast

P50 on Home/Starter and P10/P90 on Pro+

get_carbon

Carbon intensity + green score from the live generation mix

get_renewables

Wind/solar forecasts (TSO + Voltcast model) vs realized

cheapest_window

Cheapest contiguous window for a load in the next 48h

Documentation Overview

Voltcast MCP Server — European electricity prices, forecasts & carbon

Model Context Protocol server for Voltcast: day-ahead electricity prices for 47 European bidding zones (15-minute native resolution, history to 2015), probabilistic price forecasts whose accuracy is published daily at voltcast.com/accuracy, carbon intensity, and cheapest-window optimization.

Two ways to run it:

1. Hosted endpoint (recommended)

Code

https://voltcast.com/api/mcp

Streamable HTTP transport, protocol 2025-06-18. Server card: /.well-known/mcp.json.

2. Local stdio server (this repo)

bash

VOLTCAST_API_KEY=your_key npx voltcast-mcp

Or with Docker:

Terminal

docker build -t voltcast-mcp .
docker run -i -e VOLTCAST_API_KEY=your_key voltcast-mcp

The stdio server is a thin proxy onto the same REST API — identical tools, auth and rate limits. It starts and answers introspection without a key; list_zones works keyless too.

config.json

{
  "mcpServers": {
    "voltcast": {
      "command": "npx",
      "args": ["voltcast-mcp"],
      "env": { "VOLTCAST_API_KEY": "YOUR_API_KEY" }
    }
  }
}

Tools

Tool	Auth	What it does
`list_zones`	none	The zone registry (codes, names, currencies)
`get_prices`	key	Day-ahead prices for a zone/date at native market intervals
`get_forecast`	key	P50 on Home/Starter and P10/P90 on Pro+
`get_carbon`	key	Carbon intensity + green score from the live generation mix
`get_renewables`	key	Wind/solar forecasts (TSO + Voltcast model) vs realized
`cheapest_window`	Pro+ key	Cheapest contiguous window for a load in the next 48h

Auth

Authorization: Bearer <api key>. New accounts start with Home at €9/month after a 7-day card-required trial; existing Free accounts remain grandfathered. list_zones works without a key. The exact hosted-connector walkthrough is at voltcast.com/ai/local-electricity-price.

Client config

config.json

{
  "mcpServers": {
    "voltcast": {
      "url": "https://voltcast.com/api/mcp",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}

Honesty, stated plainly

Every forecast the server returns is benchmarked daily against a naive baseline in public — losses included. Zones where the model loses are free to use under the guarantee. Data sources: ENTSO-E Transparency Platform, SMARD.de (CC BY 4.0), attributed in every response.

Read the full README →View source on GitHub →

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Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

Last commit

26d ago

Most recent push to the default branch.

Tools exposed

Callable tools this server registers over MCP.

Directory activity

2 views

Config copies, upvotes, and views on AllMCPs.

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Frequently Asked Questions about Voltcast

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "voltcast": { "command": "npx", "args": ["-y","voltcast-mcp"] } }

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Technical Specs & Signals

CategoryFinance & Fintech

11/12 checks healthy over the last 45d

52Quality signal: Good · 52/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools25/30

Adoption & activity4/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

Supply-chain signal

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Scanned 2d ago via OSV.dev · voltcast-mcp (npm)

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Documentation Overview

Voltcast MCP Server — European electricity prices, forecasts & carbon

Two ways to run it:

1. Hosted endpoint (recommended)

Code

https://voltcast.com/api/mcp

Streamable HTTP transport, protocol 2025-06-18. Server card: /.well-known/mcp.json.

2. Local stdio server (this repo)

bash

VOLTCAST_API_KEY=your_key npx voltcast-mcp

Or with Docker:

Terminal

docker build -t voltcast-mcp .
docker run -i -e VOLTCAST_API_KEY=your_key voltcast-mcp

The stdio server is a thin proxy onto the same REST API — identical tools, auth and rate limits. It starts and answers introspection without a key; list_zones works keyless too.

config.json

{
  "mcpServers": {
    "voltcast": {
      "command": "npx",
      "args": ["voltcast-mcp"],
      "env": { "VOLTCAST_API_KEY": "YOUR_API_KEY" }
    }
  }
}

Tools

Tool	Auth	What it does
`list_zones`	none	The zone registry (codes, names, currencies)
`get_prices`	key	Day-ahead prices for a zone/date at native market intervals
`get_forecast`	key	P50 on Home/Starter and P10/P90 on Pro+
`get_carbon`	key	Carbon intensity + green score from the live generation mix
`get_renewables`	key	Wind/solar forecasts (TSO + Voltcast model) vs realized
`cheapest_window`	Pro+ key	Cheapest contiguous window for a load in the next 48h

Auth

Client config

config.json

{
  "mcpServers": {
    "voltcast": {
      "url": "https://voltcast.com/api/mcp",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}