{"uid":"cap_8qQ_C6zpoa547zWLCclAP","slug":"withzero-grok-voice-speech-synthesis-via-zeroclick-484f97d3","name":"WithZero Grok Voice Speech Synthesis via ZeroClick","description":"Create media, research companies and people, publish to the web, remember context, deploy apps, and schedule work—on demand, without vendor accounts or API keys. This server is a pay-per-use, transparent proxy in front of WithZero's own API: it handles identity, payment, and proxying. Agents can purchase autonomously or with their human's approval. This document is the source of truth for agents: it lists the complete verified paid surface with each operation's live price in its x-payment-info. Endpoints not listed here are not part of the supported catalog. The live catalog at /manifest.json is authoritative for prices and any free included units (prices[].includedUnits) - some meters include free usage per account before any charge.","url":"https://agents.withzero.xyz/api/v1/audio/speech/grok-voice","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"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":"0.50","reviews":0,"stars":null,"state":"rated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":{"amountUsd":"0.08","asset":"USDC"},"pricing":{"kind":"session","summary":"$0.08/call","primary":{"kind":"session","protocol":"mpp","network":"tempo","amountUsd":"0.08","per":"call","confidence":"exact","depositUsd":"0.08"},"accepted":[{"kind":"session","protocol":"mpp","network":"tempo","amountUsd":"0.08","per":"call","confidence":"exact","depositUsd":"0.08"},{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.08","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_k2bOii4T2j2ozjbEoLDob","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"session","costAmount":"0.08","costPer":"request","priority":0,"asset":"0x20C000000000000000000000b9537d11c60E8b50","unit":"request","depositMicros":80000,"planRef":null},{"uid":"pm_Py1XkDNPEmCxRbFMsvx-A","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 to speech audio using Grok Voice model via a pay-per-use proxy, requiring no vendor account or API keys.","exampleAgentPrompt":"Can you turn this script into spoken audio using Grok Voice: 'Welcome to our quarterly update. This quarter we achieved record growth across all product lines.'","exampleUseCases":[{"title":"Narrate a blog post as audio","prompt":"Take this blog post intro and convert it to speech using Grok Voice: 'Artificial intelligence is reshaping how we work, create, and communicate. Here's what you need to know for 2025.'"},{"title":"Generate podcast intro voiceover","prompt":"Create a spoken audio clip from this podcast intro script using Grok Voice: 'Hey everyone, welcome back to The Future Forward podcast. I'm your host, and today we're diving deep into autonomous AI agents.'"},{"title":"Produce accessibility audio for article","prompt":"Convert this article summary into audio so visually impaired users can listen to it — use Grok Voice to synthesize: 'Our new product launches next month with three pricing tiers designed for teams of all sizes.'"}],"resultDescription":"An audio file or audio stream containing the synthesized speech of the provided text, spoken in the Grok Voice model's voice. The response is the rendered audio data returned from the WithZero API via the ZeroClick proxy.","failureModes":["Missing required 'input' body field returns a validation error","Empty or malformed text body may result in an empty or error audio response","Payment failure (insufficient USDC balance) blocks the request before synthesis","Grok Voice model unavailability causes upstream 5xx errors propagated through the proxy","Incorrect bodyType (not json/form-data/text) causes request rejection","Rate limiting or quota exceeded from the upstream WithZero API"],"whenToPreferThis":"Choose this endpoint when you need text-to-speech synthesis using the Grok Voice model specifically, without needing your own API keys or accounts. Ideal for autonomous AI agents that can pay per call in USDC via x402. Prefer over alternatives when the Grok Voice model quality or style is specifically desired, or when avoiding vendor account setup is important.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":3,"lastUsedAt":"2026-08-20T23:14:25.555Z","lastSuccessfullyRanAt":"2026-06-16T13:14:55.201Z","lastHealthCheckAt":"2026-09-14T00:39:52.591Z","isFirstParty":true}