{"uid":"cap_zvZOgecIEK6jFunV-Ei0t","slug":"delx-commerce-speech-hd-high-quality-text-to-speech-api-052fa142","name":"Delx Commerce Speech HD — High-Quality Text-to-Speech API","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/speech-hd?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","maxLength":500,"minLength":1,"description":"Text to synthesize; the UTF-8 encoding must not exceed 500 bytes.","x-maxUtf8Bytes":500},"input":{"type":"string","maxLength":500,"minLength":1,"description":"Alias for text; the UTF-8 encoding must not exceed 500 bytes.","x-maxUtf8Bytes":500},"pitch":{"type":"integer","default":0,"maximum":12,"minimum":-12},"speed":{"type":"number","default":1,"maximum":2,"minimum":0.5},"voice":{"enum":["English_Wiselady","English_Deep-VoicedGentleman","English_CaptivatingStoryteller","Portuguese_Wiselady","Portuguese_Deep-VoicedGentleman","Portuguese_CaptivatingStoryteller","Portuguese_Narrator","Spanish_Wiselady","Spanish_Deep-tonedMan","Spanish_CaptivatingStoryteller","Spanish_Narrator"],"type":"string","default":"English_Wiselady"},"emotion":{"enum":["auto","happy","sad","angry","fearful","disgusted","surprised","neutral"],"type":"string","default":"auto"},"language":{"enum":["Automatic","English","French","German","Italian","Japanese","Korean","Portuguese","Spanish"],"type":"string","default":"Automatic"}}},"responseSchema":{"type":"json","example":{"bytes":588252,"model":"minimax/speech-02-hd","pitch":0,"speed":1,"voice":"English_CaptivatingStoryteller","sha256":"7ded32df89c15e721f6e997931b3ee28d40a89635fe35d91b5a496712e95bead","emotion":"happy","channels":1,"language":"English","provider":"replicate","audio_url":"https://api.delx.ai/api/v1/generated-audio-hd/7de36cd5f5f34ef8a28904b9b5985f60.wav","media_type":"audio/wav","duration_ms":9172,"input_tokens":130,"generation_id":"7de36cd5f5f34ef8a28904b9b5985f60","sample_rate_hz":32000,"sale_price_usdc":0.08,"gross_margin_usd":0.067,"provider_attempts":1,"sample_width_bits":16,"upstream_cost_usd":0.013}},"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_5wzUrI1FCYUQdUlpuve2b","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.08","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts text into high-definition audio (WAV) using AI voice synthesis with configurable voice, emotion, pitch, speed, and language options, billed per result in USDC via x402.","exampleAgentPrompt":"Can you synthesize this paragraph into speech using the CaptivatingStoryteller English voice with a happy emotion and normal speed: 'Welcome to the future of AI-powered commerce, where every transaction is instant and verifiable.'","exampleUseCases":[{"title":"Podcast intro narration generation","prompt":"Turn this intro script into audio using the English Deep-VoicedGentleman voice with a neutral emotion: 'Welcome back to Tech Horizons. I'm your host, and today we're diving deep into blockchain payments.'"},{"title":"Multilingual customer message voiceover","prompt":"Generate a Spanish voiceover of this customer support message using the Spanish Narrator voice at 0.9 speed and a friendly, happy emotion: 'Gracias por contactarnos. Su solicitud ha sido recibida y será atendida en breve.'"},{"title":"Audiobook chapter narration","prompt":"Synthesize this chapter excerpt into high-definition audio with the CaptivatingStoryteller English voice, sad emotion, and pitch set to -2: 'The last train had left the station, and with it, any hope of making it home by midnight.'"}],"resultDescription":"Returns a JSON object containing a publicly accessible WAV audio file URL, audio duration in milliseconds, sample rate (32000 Hz), channel count, voice and emotion used, generation ID, SHA256 hash for verification, USDC sale price, provider details, and input token count.","failureModes":["Text exceeds 500 UTF-8 bytes — returns validation error","Invalid voice enum value — returns 422 unprocessable entity","Upstream provider (Replicate/MiniMax) failure — may return 502 or retry indicated","Insufficient USDC payment via x402 — returns 402 Payment Required","Unsupported language/voice combination — may fall back to auto or error"],"whenToPreferThis":"Choose this endpoint when you need high-definition (HD) AI voice synthesis with verifiable delivery, multilingual support (English, Spanish, Portuguese, French, German, Italian, Japanese, Korean), fine-grained emotion control, and pay-per-result USDC billing without account signup. Prefer over standard TTS APIs when audio quality, SHA256 delivery verification, and crypto-native micropayment billing are priorities.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T01:13:21.331Z","isFirstParty":false,"canonicalSlug":"delx-commerce-speech-hd-high-quality-text-to-speech-api-052fa142"}