io.github.mrfentmen/unit-convert-mcp
Convert 100+ units offline: length, mass, temperature, volume, area, speed, data and time
MCP server · by mrfentmen
About
io.github.mrfentmen/unit-convert-mcp is an MCP server published by mrfentmen. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-28 and have recorded no change since. As of our marketplace pass on 2026-11-10.
What it asks for
- Runs on your machine
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Package
npm @mrfentmen/unit-convert-mcp (@mrfentmen/unit-convert-mcp on npm)
- npm downloads/week: 81 (2026-11-10)
- npm downloads/month: 719 (2026-11-10)
- Latest version on npm: 1.0.1, published 2026-10-28
npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a local MCP server: npm package
Built from what Official MCP Registry declares.
claude mcp add --transport stdio unit-convert-mcp -- npx -y @mrfentmen/unit-convert-mcp
[mcp_servers.unit-convert-mcp]
command = "npx"
args = ["-y", "@mrfentmen/unit-convert-mcp"]
{
"mcpServers": {
"unit-convert-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/unit-convert-mcp"
]
}
}
}
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.0.1 | Downloads/month (npm): 719 Downloads/week (npm): 81 Forks (GitHub): 0 Stars (GitHub): 0 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
- Became a product we track
- Official MCP Registry: appeared
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
unit-converter-mcp io.github.mrfentmen/unit-converter-mcp
Convert between units of length, weight, temperature, speed, and data size locally. No network...
-
mcp-units io.github.sellisd/mcp-units
An MCP server that provides some common units conversions for cooking
-
toolalize-mcp io.github.Vertisky/toolalize-mcp
Free unit & live currency conversion tools from toolalize.com (convert_units, convert_currency).
-
70+ free calculators & converters as MCP tools; each result links to its source page.
-
utility-converter io.github.punchfan01/utility-converter
7 utility tools in here: exchange rate, UUID, hash, Base64, timestamp, calculator, unit conversion.
-
devtools-mcp cn.pianam.mcp/devtools-mcp
Developer toolkit: UUID, timestamp, unit conversion, JSON tools, and QR code (SVG). Free.
-
drawing-converter com.imnoo/drawing-converter
Metric ⇄ imperial for technical drawings: dimensions, tolerances, ISO fits, threads, roughness.
-
vega com.thetempleofdoom.vega-mcp/vega
22 developer utilities: base64, hashes, JWT, JSON tools, unit conversion. Free, keyless.
-
polymath-megablaster-mcp io.github.headlessherm-creator/polymath-megablaster-mcp
Local deterministic calc MCP: exact math, dates, unit conversion, stats, subnet math.
-
agent-toolbox com.nclexdrill/agent-toolbox
13 free utility tools for AI agents: web text, markdown, hashing, IDs, dates, units, JSON.
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
Convert MCP servers to token-efficient CLI tools with auto-generated SKILL.md files for Claude Code agents
-
nodebench io.github.HomenShum/nodebench
260 MCP tools across 49 domains. AI Flywheel, quality gates, research, web scraping.
-
memex io.github.STiFLeR7/memex
Temporal engineering context for agents via MCP.
-
claude-code-organizer io.github.mcpware/claude-code-organizer
Organize Claude Code memories, skills, MCP servers, commands, agents, rules via drag-and-drop.
-
Skills for creating MCP Apps with the MCP Apps SDK
Has a listing on Claude Code: claude-plugins-official (5)
-
Skills for creating MCP Apps with the MCP Apps SDK
-
MCP server for terminal commands, file operations, and process management
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
-
Detect an MCP server's language (Python, TypeScript or Go) and instrument it with the matching Pendo SDK so MCP tool calls flow into Pendo Agent Analytics.
Has a listing on Claude: knowledge-work-plugins (5)
-
MCP server for terminal commands, file operations, and process management
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
Unity's official plugin for Claude Code, with curated skills for game development, monetization, and performance optimization.
-
Hosted MCP server for AI-assisted Grafana Cloud observability — no local installation required.
-
Use Datadog directly in Claude Code through a preconfigured Datadog MCP server. Query logs, metrics, traces, dashboards, and more through natural conversation. This plugin is in…
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Skills for NVIDIAs ecosystem spans GPU acceleration, CUDA, AI agents, inference, robotics, Physical AI, Omniverse, and simulation. This plugin helps you understand the pieces…
-
Test Android apps with emulator workflows for reproduction, screenshots, UI inspection, log capture, and performance profiling.
-
Cloudflare platform plugin with curated skills for Workers, Wrangler, and Agents SDK plus the official Cloudflare API MCP server.
-
Install, open, and connect the signed ChatCut Desktop app from Codex.
-
Evaluate Codex skills and plugins from chat with a beginner-friendly start command, local-first reports, token budget explanations, and guided benchmarking.
Has a listing on Community GitHub marketplaces (5)
-
Conversions across 221 color spaces, tested against cited sources: CSS strings, gamut, LUTs
-
Build high-quality MCP servers for LLM integrations
-
Rust MCP server and CLI for Unraid GraphQL operations across NAS, Docker, VM, and storage workflows.
-
Developer tools for three.ws: scaffold agents, configure MCP servers, and get runnable code examples for paid MCP tools.
-
Firecrawl, the context API for AI agents: search, scrape, interact with the web, plus paper search.
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Explore and query TimeBase streams, schemas, QQL, symbols, and server status via MCP.
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
model-apps
Build and deploy Power Apps generative pages for model-driven apps with specialist agents for planning, entity creation, and parallel code generation. Requires PAC CLI >= 2.7.0…
-
Navigate and interact with your C++ code using the Microsoft C++ Language Server.
Has a listing on Cursor: cursor/plugins (5)
-
Build apps, scripts, and automations with the TypeScript SDK.
-
Inspect and manage feature gates, experiments, dynamic configs, and metrics.
-
Let Grok Bot reach MCP servers on your private Tailscale network: connect your own tailnet, or your team's company tailnets turned on by a team admin, with each member using their…
-
Skills for building on the Cursor Origin API. Fetch the live spec first, then follow the Origin rules for credentials, scopes, webhooks, paging, and errors. Includes a skill that…
-
playwright-mcp io.github.microsoft/playwright-mcp
Playwright Tools for MCP
Has a listing on Docker MCP Catalog (4)
-
Access to Rube's catalog of remote MCP servers.
-
Firecrawl, the context API for AI agents: search, scrape, interact with the web, plus paper search.
-
The Official Model Context Protocol (MCP) server for Kagi Search & other tools.
-
MCP server for terminal commands, file operations, and process management
Has a listing on Official MCP Registry (5)
-
unit-converter-mcp io.github.mrfentmen/unit-converter-mcp
Convert between units of length, weight, temperature, speed, and data size locally. No network...
-
mcp-units io.github.sellisd/mcp-units
An MCP server that provides some common units conversions for cooking
-
toolalize-mcp io.github.Vertisky/toolalize-mcp
Free unit & live currency conversion tools from toolalize.com (convert_units, convert_currency).
-
70+ free calculators & converters as MCP tools; each result links to its source page.
-
utility-converter io.github.punchfan01/utility-converter
7 utility tools in here: exchange rate, UUID, hash, Base64, timestamp, calculator, unit conversion.
Has a listing on PyPI (MCP servers) (5)
-
A calculator MCP server using the FastMCP framework.
-
oura-mcp io.github.proscar87/oura-mcp
The Oura v2 API as an MCP server. Paginates, fixes the date range, warns when data is missing.
-
Model Context Protocol (MCP) To LangChain Tools Conversion Utility
-
Snodo MCP — MCP servers, planning, recon, and jobs
-
convertapi com.mcparmory/convertapi
Convert files across 500+ formats: documents, PDFs, and images
Has a listing on npm registry (MCP servers) (5)
-
Extract durations, sizes, percentages and frequencies in one base unit, refusing ambiguous ones.
-
Maths a model gets wrong: units with dimensional checking, equations, sheets. 5 tools, local.
-
tools-mcp io.github.First-CH/tools-mcp
Web production tools for AI agents: contrast, JP text, WebP, JSON-LD, slugs, dates and 40+ more
-
reference-data-mcp-server io.github.cyanheads/reference-data-mcp-server
Countries, timezones, elements, constants, HTTP status codes, unit conversion, and MIME type lookup.
-
MCP server for the GadgetHumans API: 226 tools in one install (ocr, ens, token safety, translate, sentiment, whois, hash, geocode, dns, weather, vat, timezone, ip, search, and a…
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Want this mark on your plugin in our catalog?
Prove you maintain it with a file in its repository, a file on your domain or a DNS record, and you can show this mark on the card, with live banners for your site and README. How verification works
You also get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.