# Calculator MCP

> Use this tool when you need to perform mathematical operations within a language model, such as calculating expressions or converting units, to solve problems that require numerical computations. The Calculator MCP server takes in mathematical expressions as input and returns the calculated results as output, supporting operations like addition, subtraction, multiplication, and more. It is ideal for use cases where numerical calculations are necessary, such as data analysis or scientific applications.

Canonical page: https://skillsregistry.net/skills/wrtnlabs-calculator-mcp  
JSON: https://api.skillsregistry.net/v1/skills/wrtnlabs-calculator-mcp

## Description

A Model Context Protocol server that provides basic calculator functionality for LLMs, enabling them to perform mathematical operations like addition, subtraction, multiplication, division, modulo, and square root.

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** verified
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-09-02

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/or17qswqzb)
- **Repository:** <https://github.com/wrtnlabs/calculator-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "wrtnlabs-calculator-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/wrtnlabs-calculator-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/wrtnlabs-calculator-mcp/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt