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Essentials MCP server

by fieldcure·io.github.fieldcure/essentials·v2.6.1
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Essential MCP server: HTTP, web search, downloads, Wolfram|Alpha, shell, JS, file I/O, memory.

B73/100grade B
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Safety scan
B73/100

full report

Adoption
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If you have run it, two minutes of your experience saves the next person an afternoon.

Essentials tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • –Code scanpackage could not be scannedn/a
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 125 days ago8/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year9/10
Overall 73/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Essentials compares

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

Safety score
73/100
higher than 43% of 3,472 Web search servers

Install Essentials in Claude Code, Cursor or VS Code

The registry entry has no remote endpoint or installable package.

What the publisher says

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

FieldCure MCP Essentials

Install once, get the basics. A Model Context Protocol (MCP) server that provides 20 essential tools — HTTP requests, web search & fetch, URL file downloads, Wolfram|Alpha computational knowledge, shell commands, JavaScript execution, file I/O, environment info, and persistent memory — for any MCP client. Category search (news, images, scholar, patents) and runtime engine switching (get/set) are always available; capabilities are guarded at invocation time against the active engine. Built with C# and the official MCP C# SDK.

Features

  • 20 essential tools — HTTP, web search & fetch, URL file downloads, runtime search-engine switching (get/set), Wolfram|Alpha, shell, JavaScript sandbox, environment info, file read/write/search, persistent memory + category search (news, images, scholar, patents)
  • Zero configuration — no API keys needed for default Bing search; optional API keys unlock Serper, Tavily, SerpApi (+ category search tools), and Wolfram|Alpha
  • Document parsing — webfetch and readfile extract text from PDF, DOCX, HWPX, PPTX, XLSX into Markdown. PDF text extraction is text-layer only; scanned PDFs without a text layer yield empty text. For OCR-backed indexing use fieldcure-mcp-rag.
  • Sandboxed JavaScript — Jint engine with strict limits (timeout, statement count, recursion depth)
  • SSRF protection — HTTP requests, web fetch, and file downloads block private IP ranges and loopback addresses
  • Cross-client — works with Claude Desktop, VS Code, AssistStudio, and any MCP-compatible client
  • Stdio transport — standard MCP subprocess model via JSON-RPC over stdin/stdout

Installation

dotnet tool install -g FieldCure.Mcp.Essentials

After installation, the fieldcure-mcp-essentials command is available globally.

From source

git clone https://github.com/fieldcure/fieldcure-mcp-essentials.git
cd fieldcure-mcp-essentials
dotnet build

Requirements

  • .NET 8.0 Runtime or later

Tools

Shortened. The full README is on GitHub.

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

Essentials: common questions

Is Essentials MCP server safe?
Mostly: it is graded B (73/100). Read the Essentials safety report
Does Essentials need an API key?
No secret keys are declared. It reads 9 settings from the environment.
Is Essentials maintained?
The last commit was 161 days ago (2026-05-25). The latest release is v2.6.1.
What can I use instead of Essentials?
Servers from other publishers that do the same job: Brave MCP server, Repomix MCP server and Zotero MCP server.

Alternatives to Essentials

Same job from other publishers: the closest match first, then the best rated.

  • Brave
    Visit https://brave.com/search/api/ for a free API key. Search the web, local businesses, images,…
    A
  • Repomix
    Pack local or remote codebases into AI-friendly files that LLMs and coding agents can read or search
    A
  • Zotero MCP
    Search, read, annotate, and add to your Zotero research library, local or web.
    B
  • Perplexity API Platform (moved to ai.perplexity/mcp-server)
    Real-time web search, reasoning, and research through Perplexity's API
    A
  • Arxiv
    Search arXiv papers, download full text, semantic search, citation graphs, and alerts via MCP.
    A

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