{"machine":"irr","slot":"S107","title":"Internal rate of return (IRR)","how_to_call":"POST https://innernetcorp.com/machines/irr with Content-Type: application/json","price_usd":"$0.003","currencies":["USDC","EURC"],"payment":"x402: send the POST without payment to receive a 402 with signed requirements; pay any option and retry.","input_example":{"cash_flows":[-10000,3000,4200,6800]},"input_schema":{"type":"object"},"summary":"Find the internal rate of return of a cash-flow series - the discount rate where NPV is zero. Investment comparison standard.","catalog":"/catalog"}