{"uid":"cap_7KG2bHmilPeSbVDhX1aVB","slug":"synap-tts-text-to-speech-via-x402-cdf38635","name":"Synap TTS — Text-to-Speech via x402","description":"AI powered by the people, for the people. OpenAI-compatible inference API with zero data retention — qwen3-coder-30b at $0.0675/1M in, $0.27/1M out. Contribute your GPU, earn credits.","url":"https://synap.linkrra.com/api/billing/x402/tts?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input","output"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object"},"type":{"type":"string"},"method":{"type":"string"},"bodyType":{"type":"string"}}},"output":{"type":"object","required":["type","mimeType"],"properties":{"type":{"type":"string"},"mimeType":{"type":"string"}}}}},"responseSchema":{"type":"binary","example":"<WAV file bytes>","mimeType":"audio/wav"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jmOPNVnuXm5Us4q7HND7U","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts text input to speech audio, returning a WAV file, billed per-call via x402 micropayment at $0.01 USDC.","exampleAgentPrompt":"Say this out loud for me and give me a WAV file: 'Welcome to our platform. Your account has been successfully created.' — use Synap's TTS to synthesize it.","exampleUseCases":[{"title":"Audio narration for onboarding message","prompt":"Take this onboarding message and turn it into spoken audio: 'Hello and welcome! We're excited to have you on board. Let's get started.' Give me back a WAV file I can use in the app."},{"title":"Voiceover for accessibility feature","prompt":"I need a WAV audio version of this paragraph for screen-reader accessibility: 'Your order has been placed and will arrive in 3 to 5 business days. Thank you for shopping with us.' Can you synthesize that as speech?"},{"title":"Podcast intro spoken audio","prompt":"Generate a spoken WAV file for my podcast intro script: 'Welcome to The Daily Byte, the podcast where we break down tech news in plain English. I'm your host, and today we're diving into AI trends.'"}],"resultDescription":"A binary WAV audio file (audio/wav) containing the synthesized speech corresponding to the submitted text input. The response is raw audio bytes suitable for playback or storage.","failureModes":["Missing required fields (input.type, input.method, input.bodyType, input.body, output.type, output.mimeType) — returns 400 validation error","Insufficient USDC balance or x402 payment failure — returns 402 Payment Required","Unsupported output MIME type specified — may return 400 or 415","Empty or malformed text body — may return empty audio or 400 error","Service unavailability due to community GPU resource constraints — returns 503 or timeout"],"whenToPreferThis":"Choose this endpoint when you need per-call micropayment TTS with no subscription, no data retention, and OpenAI-compatible semantics — particularly useful in privacy-sensitive contexts or pay-as-you-go agent workflows using the x402 payment protocol. Prefer over larger TTS providers when minimizing cost per call ($0.01 USDC) and avoiding data storage are priorities.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T18:35:04.738Z","isFirstParty":false,"canonicalSlug":"synap-tts-text-to-speech-via-x402-cdf38635"}