voltcast
European day-ahead electricity prices (43 zones), accuracy-published forecasts, carbon, optimize.
Should I use this
Quality & Safety
Findings (2)
- LOWTool 'get_realtime_prices' description lacks action verbin get_realtime_prices
- LOWTool 'get_carbon' description lacks action verbin get_carbon
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"voltcast": {
"url": "https://voltcast.com/api/mcp"
}
}
}Remote endpoints
https://voltcast.com/api/mcpstreamable-httpWhat it can do
Tool inventory
Tools (7)
🟢list_zones
List all supported European bidding zones with codes, names, and capabilities. No auth required.
Input Schema
{
"type": "object",
"properties": {},
"required": []
}🟢get_prices(zone, from, to, resolution)
Day-ahead electricity prices in each zone's native currency and native market resolution. Connect an existing Voltcast account to access account-scoped data.
Input Schema
{
"type": "object",
"properties": {
"zone": {
"type": "string",
"description": "Bidding zone code, e.g. 'DE-LU'"
},
"from": {
"type": "string",
"description": "ISO 8601 start (default: yesterday)"
},
"to": {
"type": "string",
"description": "ISO 8601 end (default: tomorrow)"
},
"resolution": {
"type": "string",
"enum": [
"native",
"hourly"
]
}
},
"required": [
"zone"
]
}🟢get_realtime_prices(zone, from, to, market)
Explicitly labeled real-time market prices (currently WEIM), kept separate from day-ahead curves. Requires an API key.
Input Schema
{
"type": "object",
"properties": {
"zone": {
"type": "string",
"description": "Market reference code, e.g. 'US-WEIM-AZPS'"
},
"from": {
"type": "string",
"description": "ISO 8601 start (default: last 24h)"
},
"to": {
"type": "string",
"description": "ISO 8601 end (default: now)"
},
"market": {
"type": "string",
"description": "Optional market filter, e.g. 'weim'"
}
},
"required": [
"zone"
]
}🟢get_forecast(zone, horizon)
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.
Input Schema
{
"type": "object",
"properties": {
"zone": {
"type": "string"
},
"horizon": {
"type": "string",
"enum": [
"48h",
"7d"
]
}
},
"required": [
"zone"
]
}🟢get_carbon(zone, from, to)
Carbon intensity (gCO2eq/kWh) and green score (0-100 low-carbon share) derived from the live generation mix.
Input Schema
{
"type": "object",
"properties": {
"zone": {
"type": "string"
},
"from": {
"type": "string"
},
"to": {
"type": "string"
}
},
"required": [
"zone"
]
}🟢get_renewables(zone, from, to)
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.
Input Schema
{
"type": "object",
"properties": {
"zone": {
"type": "string",
"description": "Bidding zone code, e.g. 'DE-LU'"
},
"from": {
"type": "string",
"description": "ISO 8601 start"
},
"to": {
"type": "string",
"description": "ISO 8601 end"
}
},
"required": [
"zone"
]
}🟢cheapest_window(zone, duration_minutes, from, to, count, ...)
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.
Input Schema
{
"type": "object",
"properties": {
"zone": {
"type": "string"
},
"duration_minutes": {
"type": "integer",
"description": "Window length in minutes"
},
"from": {
"type": "string"
},
"to": {
"type": "string"
},
"count": {
"type": "integer",
"description": "How many windows (default 3)"
},
"objective": {
"type": "string",
"enum": [
"cost",
"carbon",
"balanced"
],
"description": "Ranking objective (default cost). Carbon/balanced are experimental historical-profile heuristics, not forward carbon forecasts."
},
"tariff": {
"type": "object",
"description": "Optional variable household bill inputs; fixed monthly charges are excluded.",
"properties": {
"grid_fee_eur_kwh": {
"type": "number",
"minimum": 0,
"maximum": 2
},
"supplier_markup_eur_kwh": {
"type": "number",
"minimum": 0,
"maximum": 2
},
"vat_percent": {
"type": "number",
"minimum": 0,
"maximum": 50
}
},
"additionalProperties": false
}
},
"required": [
"zone",
"duration_minutes"
]
}Community
Evidence