{"uid":"cap_g4nPlcXTws7yX8BsDaRxY","slug":"forgemesh-voice-tts-base-f1d0b13d","name":"ForgeMesh Voice TTS Base","description":"Text-to-speech synthesis in 1 of 10 standard voices (5 male M1-M5, 5 female F1-F5) across 31 languages, up to 500 characters, returned as inline WAV audio. Use it to: give an agent a spoken reply, read an alert aloud, narrate a short UI prompt, add voice to a chatbot response, speak a confirmation message. Cheapest tier. USDC on Base via x402, no API key, no signup.","url":"https://voice.forgemesh.io/v1/tts/base","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."},"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":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_cFlypYEMdd7fM_mPOzGJF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts text to speech audio using configurable voices, personas, and 31 languages, returning a 44.1kHz WAV file via pay-per-call API.","exampleAgentPrompt":"Read this passage aloud using the Storyteller persona voice in English at a slightly slow speed of 0.85: 'Once upon a time in a land far away, there lived a brave young inventor who changed the world.'","exampleUseCases":null,"resultDescription":"A 44.1kHz 16-bit mono WAV audio file containing the synthesized speech, returned as audio/wav content, ready to play or embed in apps, videos, or other media.","failureModes":["Text exceeds 2000 character limit — request rejected or truncated","Unsupported language code — returns error for invalid ISO lang","Invalid voice ID — unrecognized M/F codes or persona names return an error","Speed or steps outside Pro-tier range — may fall back to default or return validation error","Payment failure via x402 — call blocked if USDC payment is not completed","Rate limiting — too many requests in short succession may be throttled"],"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 OpenAI-compatible request shaping. Ideal for AI agents needing on-demand voice output billed in USDC microtransactions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":2,"lastUsedAt":"2026-07-25T21:16:29.389Z","lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:47:15.554Z","isFirstParty":false}