{"uid":"cap_F8r_ZXqQb1fEUy6jTtHR_","slug":"x402engine-elevenlabs-text-to-speech-6db68b62","name":"x402engine ElevenLabs Text-to-Speech","description":"Premium text-to-speech with ElevenLabs — ultra-realistic voices, multilingual support, custom voice IDs","url":"https://x402engine.app/api/tts/elevenlabs?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","bodyType","body","method"],"properties":{"body":{"type":"object","required":["text"],"properties":{"text":{"type":"string","example":"Hello world","description":"Text to convert to speech"},"voice_id":{"type":"string","example":"21m00Tcm4TlvDq8ikWAM","description":"ElevenLabs voice ID"}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":5,"rating":{"score":"0.85","successRate":"0.99","reviews":5,"stars":"4.4","state":"rated"},"availabilityStatus":"healthy","priceObserved":{"p10Cents":"2.0000","medianCents":"2.0000","p90Cents":"2.0000","minCents":"2.0000","maxCents":"2.0000","p95Cents":"2.0000","sampleCount":42,"varies":false,"failureChargeRate":null},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_v49AIAwWsqMoAKz3UCkZa","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts text to ultra-realistic speech audio using ElevenLabs voices, with multilingual support and custom voice ID selection, billed per call via x402 micropayments.","exampleAgentPrompt":"Use the ElevenLabs TTS endpoint to read this product description aloud in a warm, professional female voice: 'Introducing the new Aurora Lamp — ambient lighting designed to transform any room.' Use voice ID 21m00Tcm4TlvDq8ikWAM and return the audio file.","exampleUseCases":[{"title":"Podcast intro narration generation","prompt":"Turn this intro script into realistic spoken audio for my podcast using an ElevenLabs voice: 'Welcome to Deep Dive, the show where we explore technology's impact on everyday life.' Use a deep, confident male voice."},{"title":"Multilingual product announcement","prompt":"I need an audio version of this product announcement in Spanish: 'Presentamos nuestra nueva colección de verano, disponible ahora en tiendas.' Use a natural-sounding Spanish female voice via ElevenLabs."},{"title":"Custom voice ID audiobook narration","prompt":"Synthesize this chapter excerpt into speech using my custom ElevenLabs voice ID XrExE9yKIg1WjnnlVkGX: 'The morning fog rolled over the hills as Clara stepped onto the porch, coffee in hand.'"}],"resultDescription":"Returns a synthesized audio file (typically MP3 or WAV binary) of the input text spoken by the selected ElevenLabs voice, ready for playback or download. May include metadata such as audio duration or voice used.","failureModes":["Invalid or unrecognized voice ID returns an error response","Text input exceeding character limits triggers a validation error","Unsupported language or locale may produce degraded or incorrect audio","Payment failure via x402 protocol returns HTTP 402 and blocks synthesis","Network timeout for long texts may require retry"],"whenToPreferThis":"Choose this endpoint when you need premium, ultra-realistic text-to-speech powered by ElevenLabs with no subscription or API key setup — ideal for agents that need pay-per-call TTS with custom voice IDs, multilingual output, or production-quality narration billed in USDC micropayments.","instructions":null,"reviewSummary":"x402engine.app delivers ultra-realistic ElevenLabs text-to-speech with consistent reliability, returning base64-encoded MP3 audio (44.1 kHz, 128kbps mono) directly in JSON rather than as a URL. Custom voice IDs work cleanly, SSML break tags pass through correctly, and response times run around 3–4 seconds for short-to-medium inputs. The API accepts only text and voice_id with no controls for speed, stability, or model selection, and default pacing runs brisk (~190 wpm), which may not suit all use cases.","reviewSummaryHighlights":["Custom voice IDs and ElevenLabs SSML break tags work reliably","Consistent 3–4 second response times for short-to-medium text","Clean 44.1 kHz MP3 output delivered base64-encoded in JSON"],"reviewSummaryConcerns":["No controls for pacing, stability, or model — default speed (~190 wpm) may be too fast","Audio returned as base64 in JSON body, not a URL — undocumented behavior","Registry schema envelope reported as incorrect; flat {text, voice_id} body required"],"reviewSummaryGeneratedAt":"2026-10-02T18:15:06.459Z","activationCount":74,"lastUsedAt":"2026-10-02T15:48:40.011Z","lastSuccessfullyRanAt":"2026-10-02T15:48:40.011Z","lastHealthCheckAt":"2026-10-02T17:42:09.073Z","isFirstParty":false,"canonicalSlug":"x402engine-elevenlabs-text-to-speech-6db68b62"}