{"uid":"cap_pwVBMJcbWp6BIuHzMxUMj","slug":"agentservices-voice-call-text-to-speech-phone-call-1f10dec9","name":"AgentServices Voice Call — Text-to-Speech Phone Call","description":"AI voice call — outbound phone call with text-to-speech","url":"https://agentservices.to/v1/calls","method":"POST","headers":{},"bodySchema":{"type":"object","required":["to"],"properties":{"to":{"type":"string","description":"Phone number to call (E.164 format, e.g., +1234567890)"},"message":{"type":"string","description":"Message to speak on the call (text-to-speech)"}}},"responseSchema":{},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.54","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":1,"rating":{"score":"0.00","successRate":"1.00","reviews":1,"stars":null,"state":"rated"},"availabilityStatus":"healthy","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.54/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.54","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.54","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dOyY6JuPs9XIgTy7vQn6H","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.54","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Places an outbound phone call to a specified number and speaks a custom message using text-to-speech, paid via x402 micropayment on Base.","exampleAgentPrompt":"Call +12025551234 and say 'Your package has been delivered to the front door. Please collect it at your earliest convenience.'","exampleUseCases":[{"title":"Automated delivery notification call","prompt":"Call +14155552671 and tell them their order #8821 is ready for pickup at the store."},{"title":"Appointment reminder to patient","prompt":"Call +13105559043 and remind them that their dental appointment is tomorrow at 2pm and they should arrive 10 minutes early."},{"title":"Urgent alert to on-call engineer","prompt":"Call +17185554892 and say 'Critical alert: the production database is down. Please log in and investigate immediately.'"}],"resultDescription":"Returns a response indicating whether the outbound call was successfully initiated, including call status or confirmation details. The response schema is currently unspecified, so the agent should expect a basic success/failure indicator.","failureModes":["Invalid or non-E.164 phone number format — call not placed","Insufficient USDC balance for x402 micropayment — payment failure","Empty or missing message field — TTS has nothing to speak","Network or telephony provider error — call fails to connect","Rate limiting or abuse prevention rejection"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to deliver a spoken message to a real phone number programmatically, especially in agentic workflows that require voice notifications, alerts, or reminders without requiring a human to manually place a call. Prefer it over SMS or email APIs when voice delivery is explicitly needed. Best suited for single, targeted outbound calls paid per-call via x402 micropayments on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":1,"lastUsedAt":"2026-09-03T12:54:21.446Z","lastSuccessfullyRanAt":"2026-09-03T12:54:21.446Z","lastHealthCheckAt":"2026-09-14T18:55:39.995Z","isFirstParty":false}