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Unit Converter API MCP Server

by br0ski777 Your server? Claim it
not responding

Unit Converter API is listed as active in the registry but did not answer our last check. It exposes 1 tools. Last commit 2 Sep 2026.

Unit conversion — length, weight, temperature, volume, speed, data. x402 micropayment.

Uptime history 91 days of history · worst day 0%
91 days agonow
0.0%
Uptime 24h
0 of 91 checks
1
Tools
read from the server
38 ms
Response time
average over 24h
0
Stars
last commit 2 Sep 2026

Unit Converter API does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

run in your terminal
claude mcp add unit-converter --transport sse https://unit-converter.api.klymax402.com/mcp
Settings → Connectors → Add custom connector, then paste this address
https://unit-converter.api.klymax402.com/mcp
~/.codex/config.toml
[mcp_servers.unit-converter]
url = "https://unit-converter.api.klymax402.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "unit-converter": {
      "url": "https://unit-converter.api.klymax402.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "unit-converter": {
      "type": "sse",
      "url": "https://unit-converter.api.klymax402.com/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

utility
utility_convert_units
Use this when you need to convert between measurement units. Returns the conversion result with formula in JSON. Returns: 1. result (converted value) 2. from and to units 3. inputValue 4. formula (human-readable conversion formula) 5. category (length/weight/temperature/volume/speed/data). Supports: length (m, km, mi, ft, in, cm, mm, yd), weight (kg, g, lb, oz, mg, ton), temperature (celsius, fahrenheit, kelvin), volume (l, ml, gal, qt, pt, cup, fl_oz), speed (m/s, km/h, mph, knots), data (B, KB, MB, GB, TB, PB). Example output: {"inputValue":100,"from":"km","to":"mi","result":62.1371,"formula":"100 km * 0.621371 = 62.1371 mi","category":"length"} Use this FOR unit conversions in calculations, data analysis, scientific computing, recipe scaling, and engineering applications. Do NOT use for currency conversion -- use finance_convert_currency instead. Do NOT use for timezone conversion -- use utility_convert_timezone instead. Do NOT use for stock prices -- use finance_get_stock_price instead.

Endpoints

URLTransportStateLatencyChecked
https://unit-converter.api.klymax402.com/mcp sse answering 38 ms 10 min ago

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Unit Converter API — questions

Answers built from our own checks of this server.

What can Unit Converter API do?
It exposes 1 tools, read directly from the server on our last check. Among them: utility_convert_units. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Unit Converter API working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 38 ms. The bar chart above shows every period we have measured.
The registry lists Unit Converter API as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Unit Converter API?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Unit Converter API need an API key?
No. Unit Converter API completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
Is Unit Converter API open source?
The code is open source: it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at unit-converter.api.klymax402.com, which runs on its operator's own terms.