calculator
A simple calculator that can add, subtract, multiply, and divide numbers. Use when the user needs to perform basic arithmetic operations.
npx skills add EXboys/evotown --skill calculator --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Calculator Skill A simple calculator that performs basic arithmetic operations. ## Usage Provide an operation and two numbers to get the result. ### Examples - Add: `{"operation": "add", "a": 5, "b": 3}` → `8` - Subtract: `{"operation": "subtract", "a": 10, "b": 4}` → `6` - Multiply: `{"operation": "multiply", "a": 6, "b": 7}` → `42` - Divide: `{"operation": "divide", "a": 20, "b": 4}` → `5`
- Usage
- Examples
What does the calculator skill do?
A simple calculator that can add, subtract, multiply, and divide numbers. Use when the user needs to perform basic arithmetic operations.
How do I install it?
Run `npx skills add EXboys/evotown --skill calculator --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From EXboys/evotown, a repository with 659 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.