MCP.Market

Voltcast MCP server

online · 100% uptime
by voltcast.com·com.voltcast/voltcast·v1.0.0
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European day-ahead electricity prices (43 zones), accuracy-published forecasts, carbon, optimize.

A88/100grade A
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Safety scan
A88/100

full report

Adoption
Growing

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Voltcast tools (7)

write = sends, deletes, buys or posts
  • cheapest_windowFree

    Rank household action windows by cost using current Voltcast curves and optional user-supplied variable tariff inputs. Experimental carbon/balanced modes use a disclosed trailing historical production-mix profile—not a forward carbon forecast—and support no emissions-reduction claim.

  • get_carbonFree

    Carbon intensity (gCO2eq/kWh) and green score (0-100 low-carbon share) derived from the live generation mix.

  • get_forecastFree

    Probabilistic price forecast up to 7 days ahead. Returns the P50 curve and any uncertainty bands included in the connected account. Accuracy is published daily at voltcast.com/accuracy.

  • get_pricesFree

    Day-ahead electricity prices in each zone's native currency and native market resolution. Connect an existing Voltcast account to access account-scoped data.

  • get_realtime_pricesFree

    Explicitly labeled real-time market prices (currently WEIM), kept separate from day-ahead curves. Requires an API key.

  • get_renewablesFree

    Day-ahead wind and solar generation forecasts: the TSO official forecast and Voltcast model with uncertainty bands, realized generation, and disclosed head-to-head verification. Requires the corresponding existing account entitlement.

  • list_zonesFree

    List all supported European bidding zones with codes, names, and capabilities. No auth required.

Public scan report

scanner v0.1.9 · 2026-09-25 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 1542ms20/20
  • Tool poisoning7 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 27 days ago15/15
  • Maintainer identitynamespace and repository owner differ; website matches verified namespace6/10
Overall 88/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Voltcast compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
88/100
higher than 75% of 48,255 servers
Tools
7
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
253 ms
faster than 55% of 30,031 servers

What its tools let an agent do: 7 read

Install Voltcast in Claude Code, Cursor or VS Code

claude mcp add --transport http voltcast https://voltcast.com/api/mcp
Add to Cursor

What the publisher says

From the Voltcast repository's README, as published. We do not edit it. Read it on GitHub

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)

https://voltcast.com/api/mcp

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

2. Local stdio server (this repo)

VOLTCAST_API_KEY=your_key npx voltcast-mcp

Or with Docker:

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.

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

Tools

Auth

Authorization: Bearer . 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

{
  "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.

Nothing above is checked by us. What we check is on the safety report.

Voltcast: common questions

Is Voltcast MCP server safe?
Yes, by our scan: it is graded A (88/100). Read the Voltcast safety report
How do I install Voltcast?
It runs remotely at voltcast.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Voltcast need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Voltcast maintained?
The last commit was 66 days ago (2026-08-29). The latest release is v1.0.0.
Is Voltcast up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Voltcast compare with other MCP servers?
safety score 88/100 (higher than 75% of 48,255 servers); tools 7 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.