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"Free tools or resources that do not require an API" matching MCP servers:

  • nrf-mcp

    pshanesmith
    A
    license
    A
    quality
    D
    maintenance
    An MCP server for Nordic nRF Connect SDK development that enables users to list, read, and search documentation and sample code from the nrfconnect/sdk-nrf repository. It provides Claude with specialized tools to navigate SDK resources, source files, and configuration examples directly through the GitHub API.
    Last updated
    3
    26
    MIT

  • pebble-mcp

    dbonomo
    A
    license
    A
    quality
    C
    maintenance
    An MCP server for the Pebble smartwatch ecosystem, offering appstore search, a 64-color design toolkit, and build-emulator-screenshot development workflows as typed tools.
    Last updated
    29
    MIT

  • siglent-sds-mcp

    MagnusJohansson
    A
    license
    A
    quality
    D
    maintenance
    An MCP server that enables AI assistants to control Siglent SDS oscilloscopes over a local network using SCPI commands. It allows users to measure signals, configure channel and acquisition settings, and capture waveforms or screenshots through natural language.
    Last updated
    13
    6
    6
    MIT

  • pixelblaze

    tomnz
    F
    license
    A
    quality
    D
    maintenance
    Enables Claude to create, update, and manage LED patterns on a PixelBlaze controller, including setting brightness and reading device info, through a set of tools that interact with the device's API.
    Last updated
    14

  • scpi-mcp

    armchairdeity
    A
    license
    A
    quality
    A
    maintenance
    An MCP server that enables AI agents to operate an oscilloscope through high-level tools like signal capture and measurement, abstracting vendor-specific SCPI commands.
    Last updated
    18
    1
    MIT

  • rs3005p-mcp

    Gigaclank
    A
    license
    A
    quality
    C
    maintenance
    An MCP server that lets AI agents control an RS PRO RS-3005P/RS-6005P programmable DC power supply over USB/RS232, enabling voltage/current control, measurements, output switching, and memory operations.
    Last updated
    14
    MIT

  • UGS-MCP

    zackpeters93
    A
    license
    A
    quality
    B
    maintenance
    MCP server for controlling CNC machines via Universal GCode Sender. Lets Claude (or any MCP-compatible AI assistant) connect to a CNC machine, inspect G-code, and issue motion commands — all through the UGS Pendant REST API.
    Last updated
    19
    3
    MIT

  • OBD MCP Server

    ayhammouda
    A
    license
    A
    quality
    B
    maintenance
    A local-first, read-only MCP server for vehicle diagnostics that exposes structured OBD-II tools for reading PIDs, DTCs, and ECU snapshots without raw protocol access.
    Last updated
    7
    Apache 2.0

  • FlipperTalk

    ReconGrunt
    A
    license
    A
    quality
    B
    maintenance
    Talk to your Flipper Zero from Claude Code — or any MCP client. Storage, app deployment, screen capture, button automation, JavaScript execution on the device, and honest answers about what is nearby.
    Last updated
    66
    MIT

  • mcp-rs232

    daedalus
    A
    license
    A
    quality
    C
    maintenance
    An MCP server that exposes RS232 serial port connectivity, enabling listing, opening, reading, and writing to serial ports via tools and resources.
    Last updated
    6
    MIT

  • lava-mcp

    mattface
    A
    license
    B
    quality
    B
    maintenance
    An MCP server that exposes a LAVA instance to agents, enabling querying the board farm, submitting and managing test jobs, and opening interactive board sessions.
    Last updated
    21
    MIT

  • ikmcp

    isakruas
    A
    license
    B
    quality
    B
    maintenance
    An MCP server that enables agents to build, test, and simulate complete ik firmware projects for 8-bit AVR microcontrollers, using real compilation and simulation tools.
    Last updated
    30
    1
    Apache 2.0

  • uc-remote-mcp

    msvinth
    A
    license
    B
    quality
    C
    maintenance
    Enables reading and configuring an Unfolded Circle Remote Two or Remote 3 through the official Core REST API, exposing activities, touchscreen pages, profiles, integration entities, and physical-button mappings to MCP clients.
    Last updated
    25
    MIT