{"uid":"cap_fkIVxrQ6WLUokHkHDbX0j","slug":"palmyr-phone-call-speak-a3f943d9","name":"Palmyr Phone Call Speak","description":"Autonomous infrastructure for AI agents — pay with USDC on Solana or Base via x402.","url":"https://palmyr.ai/phone/calls/%7BcallControlId%7D/speak","method":"POST","headers":{},"bodySchema":{"properties":{"input":{"properties":{"body":{"type":"object","additionalProperties":true}}},"output":{"properties":{"example":{"type":"object","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.08","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.08/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.08","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.08","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_HxX6RZID-4iNNViyoU-iF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.08","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Send text-to-speech audio into an active phone call identified by a call control ID, paying $0.08 USDC per call via x402 on Solana or Base.","exampleAgentPrompt":"Say 'Your appointment is confirmed for tomorrow at 3pm. Thank you for calling.' into the active call with control ID abc-123-xyz right now.","exampleUseCases":null,"resultDescription":"A confirmation that the text-to-speech audio was successfully injected into the active phone call identified by the callControlId, along with any status details about the speak action.","failureModes":["Invalid or expired callControlId returns 404 or error — call may have ended","Insufficient USDC payment or failed x402 payment flow returns 402 Payment Required","Text content missing or malformed returns 400 Bad Request","Call already terminated before speak action is processed","Network latency causes speak action to arrive too late in call lifecycle"],"whenToPreferThis":"Use this endpoint when you need to inject synthesized speech into a live, in-progress phone call and you have a valid callControlId. Ideal for AI agent telephony workflows where autonomous bots need to speak during calls, deliver dynamic messages mid-call, or run IVR-style interactions — and you are equipped to pay per-call in USDC via x402 on Solana or Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:30:02.318Z","isFirstParty":false}