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Jarroba Tools · Calculation MCP Server

local only

Jarroba Tools · Calculation runs on your own machine — the client starts it, so there is no endpoint to ping. 77 installs a week from npm.

Maths a model gets wrong: units with dimensional checking, equations, sheets. 5 tools, local.

The linked repository no longer exists on GitHub — it was deleted or made private.

Installs per day peak 77 · avg 2
a month agotoday
77
Installs / week
npm · @jarroba/mcp-calc
Stars
on GitHub
Last commit
0 releases in 90 days
License
language unknown

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add jarroba-tools-calc -- npx -y @jarroba/mcp-calc
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "jarroba-tools-calc": {
      "args": [
        "-y",
        "@jarroba/mcp-calc"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.jarroba-tools-calc]
command = "npx"
args = ["-y", "@jarroba/mcp-calc"]
.cursor/mcp.json
{
  "mcpServers": {
    "jarroba-tools-calc": {
      "args": [
        "-y",
        "@jarroba/mcp-calc"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "jarroba-tools-calc": {
      "args": [
        "-y",
        "@jarroba/mcp-calc"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: JARROBA_MCP_DOMAINS (Which tool domains to publish, comma-separated. Defaults to what this package is for. Valid: core, calc, diagram, kg, db, ai, logs, queue, project, tests, api, chip, chem. Fewer domains means less of your context window spent on tool definitions.). The author declared them in the registry entry; get the values from the project itself.

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Jarroba Tools · Calculation — questions

Answers built from our own checks of this server.

Why is there no uptime for Jarroba Tools · Calculation?
Jarroba Tools · Calculation runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @jarroba/mcp-calc was installed 77 times last week.
Is Jarroba Tools · Calculation still maintained?
The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.
How do I connect Jarroba Tools · Calculation?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls @jarroba/mcp-calc straight from npm; nothing to host, nothing to sign up for.
How many people use Jarroba Tools · Calculation?
The npm package @jarroba/mcp-calc was installed 77 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.