{"machine":"quadratic-solver","slot":"S166","title":"Quadratic equation solver","how_to_call":"POST https://innernetcorp.com/machines/quadratic-solver 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":{"a":1,"b":-3,"c":2},"input_schema":{"type":"object"},"summary":"Solve ax² + bx + c = 0: real or complex roots, discriminant and vertex.","catalog":"/catalog"}