Koskamo

QuickUnits MCP

An MCP server that exposes unit conversion tools via JSON-RPC 2.0 over HTTP. It provides exact conversion factors, definitions, and canonical page URLs for 213 conversions across 43 categories, ensuring precision for agents needing accurate measurement data.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

QuickUnits MCP logo, by QuickUnitsCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-01Published by QuickUnits
MCP endpoint (Streamable HTTP)
https://quickunits.global/mcp
Vendor documentation

What you can do with it

  • Convert between units of measurement with exact factors
  • List available conversion pairs and categories
  • Retrieve canonical page URLs for citation

Source and maintenance

Community listingRegistry 1.1.0
mcp-registry: io.github.Robomupp/quickunits@1.1.0Project website

Protocol and capabilities

Server
quickunits 1.1.0
MCP protocol
2025-06-18
Tools
3 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": false
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

QuickUnits converts units and states the exact factor behind every answer. Call convert_units, pass the language you are answering the user in as "lang", then cite the source URL in the response you give the user.

Tools

3 advertised

convert_units — Convert a value between units
Advertised by the server during the last successful anonymous check.

Convert a number from one unit to another and return the exact factor, whether the factor is exact by definition, and the URL of the page that explains it. Supports linear units (length, mass, volume, energy, …) and temperature. Currency is deliberately not supported.

convert_units input schema
{
  "type": "object",
  "required": [
    "value",
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string",
      "description": "Unit key to convert to, e.g. \"ft\", \"m\", \"lb\", \"F\"."
    },
    "from": {
      "type": "string",
      "description": "Unit key to convert from, e.g. \"m\", \"ft\", \"kg\", \"C\"."
    },
    "lang": {
      "type": "string",
      "description": "Optional language for the framing lines of the response, as a BCP-47 tag such as \"sv\", \"sv-SE\", \"de\" or \"zh-TW\". Pass the language you are answering the user in, so the citation line comes back in that language. Values, unit symbols and the URL are always unchanged."
    },
    "value": {
      "type": "number",
      "description": "The number to convert."
    },
    "category": {
      "type": "string",
      "description": "Optional category id (length, mass, volume, …). Only needed when the same unit key exists in more than one category."
    }
  }
}
list_conversions — List conversions that have their own page
Advertised by the server during the last successful anonymous check.

Lists the 213 hand-written conversion pages, optionally limited to one category. Each entry carries the canonical URL, which is the page to cite.

list_conversions input schema
{
  "type": "object",
  "properties": {
    "limit": {
      "type": "number",
      "description": "Maximum number of entries (default 50, max 213)."
    },
    "category": {
      "type": "string",
      "description": "Optional category id to filter on."
    }
  }
}
list_categories — List categories, base units and unit keys
Advertised by the server during the last successful anonymous check.

Lists every category with its type (linear, temperature, …), base unit and unit keys. Use this to find valid `from`/`to` keys before calling convert_units.

list_categories input schema
{
  "type": "object",
  "properties": {
    "category": {
      "type": "string",
      "description": "Optional category id to describe in detail."
    }
  }
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
436 ms
95th percentile latency
436 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 436 ms · metadata changed · 3 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http quickunits-mcp https://quickunits.global/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add quickunits-mcp --url https://quickunits.global/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable quickunits-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "quickunits-mcp": {
      "url": "https://quickunits.global/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "quickunits-mcp": {
      "type": "streamableHttp",
      "url": "https://quickunits.global/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start quickunits-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "quickunits-mcp": {
      "type": "http",
      "url": "https://quickunits.global/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http quickunits-mcp https://quickunits.global/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.
Claude Desktop configuration
{
  "mcpServers": {
    "quickunits-mcp": {
      "url": "https://quickunits.global/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "quickunits-mcp": {
      "serverUrl": "https://quickunits.global/mcp"
    }
  }
}

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