{"machine":"npv","slot":"S106","title":"Net present value (NPV)","how_to_call":"POST https://innernetcorp.com/machines/npv 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":{"rate":10,"cash_flows":[-10000,3000,4200,6800]},"input_schema":{"type":"object"},"summary":"Compute the net present value of a series of cash flows at a discount rate - project and investment appraisal.","catalog":"/catalog"}