calculate
Calculates/evaluates the given expression.
LABSCO SUMMARY
A number in the middle of an answer gets computed instead of recalled.
One tool, one argument, and the value is in what it prevents rather than what it adds: an arithmetic result that would otherwise come from a language model's sense of what looks plausible. There is no state anywhere in the interface — no variables carried between calls, no session, no units — so anything that needs to accumulate belongs in a different server.
What it is
A single-tool server that evaluates a numeric expression passed as a string.
What you get
- Arithmetic evaluated rather than inferred: calculate takes the expression and returns its value
- One argument and one result, which makes it cheap enough to route to for a single number mid-answer
- No host, database or account in the call path — the expression is the whole input
Requirements
uv with a Python available. Nothing to configure past the launch: expression is the tool's only argument.
Setup effort
One command — uvx mcp-server-calculator
USE CASES
01
Getting a number right in the middle of an answer
Send the expression out to be evaluated instead of producing the result from memory, and put the returned value into the sentence.
1 tool
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
BEFORE YOU INSTALL
What to know first
Tools you get
1 tool when we connected.
Requires
uvx on PATH
CONTEXT COST
Light Standing cost
Rated by the size of the one tool definition that rides along on every turn
INSTALLATION
Connect your client
Add the block to your client, or run the command directly.
Server setup
Configuration file
JSON
{
"mcpServers": {
"mcp-server-calculator": {
"command": "uvx",
"args": [
"mcp-server-calculator"
]
}
}
}uvx
TERMINAL
uvx mcp-server-calculator
