Calculator MCP Server
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| addA | Add two numbers together. Args: a: The first number. b: The second number. Returns: A string with the sum of a and b. |
| subtractA | Subtract the second number from the first. Args: a: The number to subtract from. b: The number to subtract. Returns: A string with the result of a - b. |
| multiplyA | Multiply two numbers together. Args: a: The first number. b: The second number. Returns: A string with the product of a and b. |
| divideA | Divide the first number by the second. Args: a: The numerator. b: The denominator. Must not be zero. Returns: A string with the result of a / b, or an error message if b is zero. |
| powerA | Raise a number to a power. Args: base: The base number. exponent: The exponent to raise the base to. Returns: A string with the result of base ** exponent, or an error message if the operation is undefined (e.g. a negative base with a fractional exponent). |
| square_rootA | Compute the square root of a number. Args: value: The number to take the square root of. Must be non-negative. Returns: A string with the square root of value, or an error message if value is negative. |
| percentageA | Compute what percentage 'part' is of 'whole'. Args: part: The partial amount. whole: The total amount. Must not be zero. Returns: A string with the percentage part is of whole, or an error message if whole is zero. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
| solve_equation | Guide the assistant through solving a math word problem step by step. Args: problem: The word problem or equation to solve. |
| calculation_help | Offer guidance on how to use the calculator tools for a given topic. Args: topic: The area to get help with (e.g. "percentages", "exponents", "square roots", or "general"). |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
| get_math_constants | Reference table of common math constants (pi, e, golden ratio, tau). |
| get_calculation_history | Log of every successful calculation made this session, oldest first. |
TDQS
Scored across 7 tools
Each tool performs a unique arithmetic operation with no overlap or ambiguity. The names and descriptions clearly distinguish addition, subtraction, multiplication, division, exponentiation, square root, and percentage.
All tool names follow a consistent lowercase_with_underscores pattern (e.g., add, square_root, percentage). The naming is uniform and predictable across the set.
With 7 tools, the set covers the core arithmetic operations needed for a calculator server. The count is well within the typical 3-15 range and feels neither sparse nor bloated.
The tool set covers the essential operations (add, subtract, multiply, divide, power, square root, percentage). A modulo operation could be expected but its absence does not create a significant gap for standard calculator use.