Essentials

io.github.fieldcure/essentials · v2.6.1

Essential MCP server: HTTP, web search, downloads, Wolfram|Alpha, shell, JS, file I/O, memory.

Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add essentials -e ESSENTIALS_SEARCH_ENGINE=<ESSENTIALS_SEARCH_ENGINE> -e ESSENTIALS_SEARCH_API_KEY=<ESSENTIALS_SEARCH_API_KEY> -e SERPER_API_KEY=<SERPER_API_KEY> -e SERPAPI_API_KEY=<SERPAPI_API_KEY> -e TAVILY_API_KEY=<TAVILY_API_KEY> -e WOLFRAM_APPID=<WOLFRAM_APPID> -e ESSENTIALS_MEMORY_PATH=<ESSENTIALS_MEMORY_PATH> -e ESSENTIALS_DOWNLOAD_DIRECTORY=<ESSENTIALS_DOWNLOAD_DIRECTORY> -e ESSENTIALS_SETTINGS_PATH=<ESSENTIALS_SETTINGS_PATH> -- dnx FieldCure.Mcp.Essentials --yes

claude_desktop_config.json

{
  "mcpServers": {
    "essentials": {
      "command": "dnx",
      "args": [
        "FieldCure.Mcp.Essentials",
        "--yes"
      ],
      "env": {
        "ESSENTIALS_SEARCH_ENGINE": "<ESSENTIALS_SEARCH_ENGINE>",
        "ESSENTIALS_SEARCH_API_KEY": "<ESSENTIALS_SEARCH_API_KEY>",
        "SERPER_API_KEY": "<SERPER_API_KEY>",
        "SERPAPI_API_KEY": "<SERPAPI_API_KEY>",
        "TAVILY_API_KEY": "<TAVILY_API_KEY>",
        "WOLFRAM_APPID": "<WOLFRAM_APPID>",
        "ESSENTIALS_MEMORY_PATH": "<ESSENTIALS_MEMORY_PATH>",
        "ESSENTIALS_DOWNLOAD_DIRECTORY": "<ESSENTIALS_DOWNLOAD_DIRECTORY>",
        "ESSENTIALS_SETTINGS_PATH": "<ESSENTIALS_SETTINGS_PATH>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "essentials": {
      "command": "dnx",
      "args": [
        "FieldCure.Mcp.Essentials",
        "--yes"
      ],
      "env": {
        "ESSENTIALS_SEARCH_ENGINE": "<ESSENTIALS_SEARCH_ENGINE>",
        "ESSENTIALS_SEARCH_API_KEY": "<ESSENTIALS_SEARCH_API_KEY>",
        "SERPER_API_KEY": "<SERPER_API_KEY>",
        "SERPAPI_API_KEY": "<SERPAPI_API_KEY>",
        "TAVILY_API_KEY": "<TAVILY_API_KEY>",
        "WOLFRAM_APPID": "<WOLFRAM_APPID>",
        "ESSENTIALS_MEMORY_PATH": "<ESSENTIALS_MEMORY_PATH>",
        "ESSENTIALS_DOWNLOAD_DIRECTORY": "<ESSENTIALS_DOWNLOAD_DIRECTORY>",
        "ESSENTIALS_SETTINGS_PATH": "<ESSENTIALS_SETTINGS_PATH>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "essentials": {
      "type": "stdio",
      "command": "dnx",
      "args": [
        "FieldCure.Mcp.Essentials",
        "--yes"
      ],
      "env": {
        "ESSENTIALS_SEARCH_ENGINE": "<ESSENTIALS_SEARCH_ENGINE>",
        "ESSENTIALS_SEARCH_API_KEY": "<ESSENTIALS_SEARCH_API_KEY>",
        "SERPER_API_KEY": "<SERPER_API_KEY>",
        "SERPAPI_API_KEY": "<SERPAPI_API_KEY>",
        "TAVILY_API_KEY": "<TAVILY_API_KEY>",
        "WOLFRAM_APPID": "<WOLFRAM_APPID>",
        "ESSENTIALS_MEMORY_PATH": "<ESSENTIALS_MEMORY_PATH>",
        "ESSENTIALS_DOWNLOAD_DIRECTORY": "<ESSENTIALS_DOWNLOAD_DIRECTORY>",
        "ESSENTIALS_SETTINGS_PATH": "<ESSENTIALS_SETTINGS_PATH>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Name	Description
`ESSENTIALS_SEARCH_ENGINE` Optional
`ESSENTIALS_SEARCH_API_KEY` Optional
`SERPER_API_KEY` Optional
`SERPAPI_API_KEY` Optional
`TAVILY_API_KEY` Optional
`WOLFRAM_APPID` Optional
`ESSENTIALS_MEMORY_PATH` Optional
`ESSENTIALS_DOWNLOAD_DIRECTORY` Optional
`ESSENTIALS_SETTINGS_PATH` Optional

Details

Package	`[email protected]` (NUGET, stdio)
First published	25 May 2026
Last updated	25 May 2026
Registry name	`io.github.fieldcure/essentials`

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Local install

Installed and run on your own machine, so there is no public endpoint to check.

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