{"uid":"cap_6pSWWT0QONT_V57YTg8nl","slug":"forgemesh-voice-pro-tts-ab919a97","name":"ForgeMesh Voice Pro TTS","description":"Text-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, up to 500 characters, returned as WAV audio. Use it to: speak an urgent alert faster, slow a reading for clarity, tune synthesis quality against latency, produce a paced voice cue for a UI, generate a rushed or calm-toned notification. USDC on Base via x402, no API key.","url":"https://voice.forgemesh.io/v1/tts/pro?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"lang":{"enum":["en","ko","ja","ar","bg","cs","da","de","el","es","et","fi","fr","hi","hr","hu","id","it","lt","lv","nl","pl","pt","ro","ru","sk","sl","sv","tr","uk","vi"],"type":"string","description":"Language code; 31 languages supported"},"text":{"type":"string","maxLength":2000,"minLength":1,"description":"Text to synthesize into speech, max 2000 characters. Use non-long routes for 1-500 chars and -long routes for 501-2000 chars."},"speed":{"type":"number","maximum":2,"minimum":0.7,"description":"Pro/Custom expressive speed control, 0.7-2.0. Presets: slow 0.7, normal 1.0, fast 1.3, rapid 1.6"},"steps":{"type":"integer","maximum":100,"minimum":1,"description":"Pro/Custom quality control, 1-100. Presets: draft 4, standard 8, high 16, ultra 24"},"voice":{"enum":["M1","M2","M3","M4","M5","F1","F2","F3","F4","F5"],"type":"string","description":"Standard voice: M1-M5 or F1-F5"}}},"responseSchema":{"type":"json","example":{"description":"44.1kHz 16-bit mono WAV speech audio returned inline","content_type":"audio/wav"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":1,"rating":{"score":"0.58","successRate":"1.00","reviews":1,"stars":"3.3","state":"rated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_2aGD-BlKIxuP9VDe_B31h","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts text to high-quality speech audio using persona voices across 31 languages with configurable speed and diffusion steps, returning a WAV file.","exampleAgentPrompt":"Read this passage aloud in French using the Storyteller persona at 1.3x speed with 20 diffusion steps: 'Il était une fois, dans un royaume lointain, un jeune prince qui rêvait de voir le monde.'","exampleUseCases":[{"title":"Narrate audiobook chapter aloud","prompt":"Take this chapter excerpt and read it out loud using the Narrator persona in English at 1.0x speed with 30 diffusion steps for the highest quality: 'The storm had been building for three days before it finally broke over the valley, sending torrents of rain down the hillsides and flooding the old mill road.'"},{"title":"Generate Spanish voiceover audio","prompt":"Convert this product description into spoken Spanish using the Storyteller persona at 1.1x speed: 'Descubre nuestra nueva línea de productos naturales, diseñada para cuidar tu piel con ingredientes puros y sostenibles.'"},{"title":"Give my agent a spoken voice","prompt":"My AI customer support agent just drafted a response message — can you turn it into audio using a friendly persona voice in English at normal speed so we can play it back to the caller over the phone?"}],"resultDescription":"A 44.1kHz 16-bit mono WAV audio file containing the synthesized speech of the provided text, in the requested language and voice persona.","failureModes":["Text exceeds 2000 character limit — request rejected","Unsupported language code provided — error returned","Invalid voice identifier (not in M1-M5, F1-F5, or persona list) — error","Speed out of range (outside 0.7-2.0) — validation error","Steps out of range (outside 1-100) — validation error","Payment failure via x402 — 402 Payment Required response","Service unavailability — 5xx error"],"whenToPreferThis":"Choose this endpoint when you need a pay-per-call TTS API with no subscription, support for 31 languages, named persona voices (Storyteller, Narrator, etc.), and fine-grained diffusion quality control. Ideal for AI agents, automated pipelines, or creators who want per-invocation USDC billing via x402 rather than a monthly SaaS plan.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":2,"lastUsedAt":"2026-07-02T01:42:09.284Z","lastSuccessfullyRanAt":"2026-07-02T01:42:09.284Z","lastHealthCheckAt":"2026-10-09T18:45:09.765Z","isFirstParty":false,"canonicalSlug":"forgemesh-voice-pro-tts-ab919a97"}