{"name":"irr","title":"Internal Rate of Return (IRR) Calculator","category":"valuation","description":"The discount rate where NPV=0 for a cash-flow series (solved by bisection).","price_usd":0.002,"input_schema":{"type":"object","properties":{"cash_flows":{"type":"array","description":"Array of cash flows with at least one sign change"}},"additionalProperties":false,"required":["cash_flows"]}}