{"ok":true,"tool":"Simple Interest Calculator","operation":"calculate-simple-interest","description":"Calculate simple interest and total amount from principal, rate, and time.","method":"POST","endpoint":"/api/simple-interest-calculator","webUrl":"https://ultraquick.tools/tools/simple-interest-calculator","parameters":{"type":"object","properties":{"principal":{"type":"number","description":"Principal amount"},"rate":{"type":"number","description":"Annual interest rate as a percentage"},"time":{"type":"number","description":"Time period"},"timeUnit":{"type":"string","enum":["years","months","days"],"description":"Unit of time (default years)"}},"required":["principal","rate","time"]},"response":{"type":"object","properties":{"principal":{"type":"number"},"rate":{"type":"number"},"time":{"type":"number"},"timeUnit":{"type":"string"},"interest":{"type":"number"},"total":{"type":"number"},"years":{"type":"number"}}},"example":{"request":{"principal":1000,"rate":5,"time":2,"timeUnit":"years"},"response_shape":{"type":"object","properties":{"principal":{"type":"number"},"rate":{"type":"number"},"time":{"type":"number"},"timeUnit":{"type":"string"},"interest":{"type":"number"},"total":{"type":"number"},"years":{"type":"number"}}}},"howToCall":"POST a JSON body to https://ultraquick.tools/api/simple-interest-calculator. Returns {\"ok\":true,\"result\":{...}} on success or {\"ok\":false,\"error\":\"...\"} on failure. No auth, CORS-enabled.","parametersSummary":"  principal (number, required) — Principal amount\n  rate (number, required) — Annual interest rate as a percentage\n  time (number, required) — Time period\n  timeUnit (string, optional, one of: years|months|days) — Unit of time (default years)","curlExample":"curl -X POST https://ultraquick.tools/api/simple-interest-calculator -H \"Content-Type: application/json\" -d '{\"principal\":1000,\"rate\":5,\"time\":2,\"timeUnit\":\"years\"}'"}