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"Services or tools that don't require a separate API key" matching MCP servers:

  • ccpp-tools-mcp

    jinhyunan
    A
    license
    B
    quality
    B
    maintenance
    MCP server providing deterministic, standards-traceable engineering calculations for combined-cycle power plant balance-of-plant design, such as fluid properties, pipe sizing, pump NPSH, and valve sizing, with every result including method, assumptions, and warnings.
    11
    1
    Apache 2.0

  • ladybug-tools-mcp

    LoftyTao
    A
    license
    -
    quality
    A
    maintenance
    Enables natural-language interaction with Ladybug Tools for building performance simulation, 3D modeling, and data visualization, allowing agents to perform complex environmental analysis tasks without CAD software.
    3
    GPL 3.0

  • shelly-api-mcp

    adambenhassen
    F
    license
    -
    quality
    B
    maintenance
    Provides read-only access to Shelly Cloud energy data, including live power, lifetime energy, and historical consumption with cost, enabling AI agents to monitor electricity usage without device control.

  • Cernion Grid Intelligence

    energychain
    A
    license
    -
    quality
    A
    maintenance
    87+ specialized tools for German and European energy data. Direct AI access to Marktstammdatenregister (MaStR), ENTSO-E, Redispatch 2.0, and Grid Operations for utilities and datacenters.
    2
    GPL 3.0

  • Elecz MCP Server

    zemloai-ctrl
    F
    license
    -
    quality
    A
    maintenance
    Provides real-time electricity prices, cheapest hours, and contract comparison for 40+ countries, enabling AI agents to make energy-aware decisions.
    2
  • PowerGridIQ by powergridiq

    PowerGridIQofficial

    powergridiq
    A
    license
    A
    quality
    B
    maintenance
    The PGIQ Rating as agent tools: where to site or schedule a large electricity load across 67 global power markets. Wraps a read-only REST API returning reasoned, cited ratings across access, availability, cost, momentum, and carbon, plus live grid snapshots and cheapest-window scheduling.
    6
    44
    MIT

  • fin-data-mcp-server

    CohenD
    A
    license
    A
    quality
    C
    maintenance
    A Model Context Protocol server providing free financial market data across 13 categories with 83 no-key tools, enabling access to stocks, indices, options, forex, crypto, energy, prediction markets, and more.
    83
    MIT

  • @cyanheads/eia-energy-mcp

    cyanheads
    A
    license
    -
    quality
    A
    maintenance
    Browse and query the U.S. Energy Information Administration API v2 — electricity, petroleum, natural gas, coal, forecasts, and more via MCP. STDIO or Streamable HTTP.
    799
    2
    Apache 2.0

  • epwforge-mcp

    guzz-labs
    A
    license
    -
    quality
    B
    maintenance
    Weather files (EPW/DDY) for building energy simulation, on-demand. Four tools: search the 17,000-station catalog, analyze any EPW (design conditions, HDD/CDD, DesignDay IDF emit), render 5 chart types (diurnal, wind rose, temp carpet, monthly box plot, comparison), and generate TMY/AMY/CMIP6-morphed scenarios with UHI, extreme events, and wildfire smoke overlays. 3 of 4 tools work without API key.
    MIT

  • data-odre

    pipeworx-io
    A
    license
    -
    quality
    C
    maintenance
    Provides tools to search, inspect, and query energy open data from ODRE (electricity & gas production, consumption, grid load, renewables) using natural language or direct tool calls.
    9
    MIT

  • Energi Data Service MCP

    Enevoldsen88
    F
    license
    -
    quality
    C
    maintenance
    Read-only MCP server for Energinet's public Energi Data Service. Enables dataset search, arbitrary dataset queries with filters, and CO2 emissions retrieval for DK1/DK2 without an API key.

  • GridPulse Energy

    DevTee-dot
    F
    license
    -
    quality
    B
    maintenance
    MCP server for real-time electricity prices, carbon intensity, and energy analytics across 41+ zones in Europe, Great Britain, the United States, and Australia. Query live prices, compare zones, check gas storage levels, get green scores, find optimal charging windows, and access advanced analytics. Free Basic tier requires no API key. Install via npx gridpulse-mcp or connect directly via Streamab

  • Kia Access MCP

    chrischall
    A
    license
    A
    quality
    A
    maintenance
    A Model Context Protocol server that connects Claude to your own Kia vehicle through the Kia Owners API, enabling vehicle status, location, odometer, EV charge state, and confirm-gated commands for doors, climate, and charging.
    16
    248
    MIT

  • HueMCP

    mbruton
    A
    license
    A
    quality
    D
    maintenance
    Enables discovery and control of Philips Hue lighting devices via a local bridge using the CLIP v2 API, without any cloud dependency.
    10
    MIT

  • mcp-server-eia

    GSA-TTS
    F
    license
    A
    quality
    C
    maintenance
    An MCP server that exposes the U.S. Energy Information Administration (EIA) Open Data API, enabling LLMs to browse and query energy data across 17 datasets with generic, composable tools.
    4

  • aria-mcp-elpriser

    kimhjort
    A
    license
    A
    quality
    C
    maintenance
    MCP server for fetching Danish electricity spot prices (DK1/DK2) using the free elprisenligenu.dk API, providing tools to get current price, cheapest hours, and price summaries.
    4
    MIT