{"id":"969919f0-48b0-44d6-9f97-e183733aa4aa","shortId":"juGUUj","kind":"mpp","title":"Grok-powered text-to-video and image-to-video generation via micropayments, $0.15–$0.75 per clip.","tagline":"Grok-powered text-to-video and image-to-video generation via micropayments, $0.15–$0.75 per clip.","description":"This endpoint generates videos using xAI's Grok Video model through StableStudio's pay-per-generation platform. It supports both text-to-video (prompt only) and image-to-video (pass an optional `image` URL) in a single endpoint. Videos can be 3–15 seconds long at 480p or 720p resolution, with seven aspect ratio options including 16:9, 9:16, and 1:1.\n\nPayment is handled via the MPP protocol (Tempo method, pathUSD on Tempo L2) or x402 (USDC on Base, network eip155:8453). No API keys are needed — callers POST to the endpoint, receive a 402 payment challenge, sign a USDC/pathUSD authorization, then resubmit with a `PAYMENT-SIGNATURE` header. The response returns a `jobId` with status \"pending\". Callers then poll `GET /api/jobs/{jobId}` (authenticated via `SIGN-IN-WITH-X` wallet signature) until the job completes, at which point the response includes `videoUrl` and `thumbnailUrl`. Typical generation time is approximately 17 seconds.\n\nPricing is dynamic, ranging from $0.15 to $0.75 per generation depending on duration and resolution. For image-to-video, images must first be uploaded via the `/api/upload` flow ($0.01) to obtain a blob URL. The endpoint is part of StableStudio's broader suite that also offers image generation (Nano Banana Pro, GPT Image 1.5, Flux 2 Pro, Grok Image) and other video models (Seedance, Wan 2.6, Sora 2, Veo 3.1). An MCP server is available via `npx -y agentcash@latest`.","tags":["image","video","generation","nano-banana","gpt-image","grok","flux","sora","veo","seedance","wan"],"capabilities":["text-to-video","image-to-video","grok-video","variable-duration","aspect-ratio-selection","resolution-selection","micropayment-auth","async-job-polling","usdc-on-base","tempo-pathusd","no-api-key"],"categories":["video","vision"],"synonyms":["grok video generation","xAI video","text to video API","image to video API","AI video generation","micropayment video","pay-per-use video","StableStudio grok-video","short video generation"],"warnings":["Probe returned 405 on HEAD/GET because this endpoint only accepts POST — it is not broken, just method-restricted","No dedicated documentation page found (stablestudio.dev/docs returns 404); all docs are in the OpenAPI spec","Requires a crypto wallet (Base USDC or Tempo pathUSD) — no fiat payment option documented"],"endpointUrl":"https://stablestudio.dev/api/generate/grok-video/generate","protocol":"mpp","transport":"http","auth":{"type":"mpp","details":{"realm":"stablestudio.dev","intent":"charge","method":"tempo","service_methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}}}},"qualityScore":"0.820","qualityRationale":"Full OpenAPI schema with detailed input/output definitions, clear pricing ($0.15–$0.75), documented payment flow, and comprehensive guidance. The probe returned 405 (not 402) because grok-video only accepts POST, but the endpoint is clearly live based on the full OpenAPI spec and platform context. No direct crawl docs page exists (404), but the OpenAPI x-guidance is 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'/api/upload':223 '0.01':225 '0.15':16,35,201 '0.75':17,36,203 '1':103,104 '1.5':250 '15':84 '16':98,101 '17':194 '2':252,264 '2.6':262 '3':83 '3.1':266 '402':138 '480p':88 '720p':90 '8453':125 '9':99,100 'AI video generation' 'StableStudio grok-video' 'agentcash':275 'also':241 'api':127 'approxim':193 'aspect':94 'aspect-ratio-selection' 'async-job-polling' 'authent':167 'author':144 'avail':271 'banana':246 'base':122 'blob':229 'broader':238 'caller':131,161 'challeng':140 'clip':19,38 'complet':179 'depend':206 'durat':208 'dynam':198 'eip155':124 'endpoint':40,79,135,232 'first':218 'flow':224 'flux':251 'generat':13,32,41,55,190,205,244 'get':164 'gpt':248 'grok':2,21,46,254 'grok video generation' 'grok-pow':1,20 'grok-video' 'handl':107 'header':152 'imag':10,29,68,74,213,216,243,249,255 'image to video API' 'image-to-video':9,28,67,212 'includ':97,185 'job':178 'jobid':157,166 'key':128 'l2':117 'latest':276 'long':86 'mcp':268 'method':113 'micropay':15,34 'micropayment video' 'micropayment-auth' 'model':48,259 'mpp':110 'must':217 'nano':245 'need':130 'network':123 'no-api-key' 'npx':273 'obtain':227 'offer':242 'option':73,96 'part':234 'pass':71 'pathusd':114 'pay':53 'pay-per-gener':52 'pay-per-use video' 'payment':105,139,150 'payment-signatur':149 'pend':160 'per':18,37,54,204 'platform':56 'point':182 'poll':163 'post':132 'power':3,22 'price':196 'pro':247,253 'prompt':64 'protocol':111 'rang':199 'ratio':95 'receiv':136 'resolut':91,210 'resolution-selection' 'respons':154,184 'resubmit':146 'return':155 'second':85,195 'seedanc':260 'server':269 'seven':93 'short video generation' 'sign':141,170 'sign-in-with-x':169 'signatur':151,175 'singl':78 'sora':263 'stablestudio':50,236 'status':159 'suit':239 'support':58 'tempo':112,116 'tempo-pathusd' 'text':5,24,61 'text to video API' 'text-to-video':4,23,60 'thumbnailurl':188 'time':191 'typic':189 'upload':220 'url':75,230 'usdc':120 'usdc-on-base' 'usdc/pathusd':143 'use':43 'variable-duration' 'veo':265 'via':14,33,108,168,221,272 'video':7,12,26,31,42,47,63,70,80,215,258 'videourl':186 'wallet':174 'wan':261 'x':173 'x402':119 'xAI video' 'xai':44 'y':274","prices":[{"id":"f8ffe4e1-dd50-40bc-ae6a-dc646286f341","listingId":"969919f0-48b0-44d6-9f97-e183733aa4aa","amountUsd":null,"unit":"per_call","nativeCurrency":"pathUSD","nativeAmount":null,"chain":"tempo","payTo":null,"paymentMethod":"mpp-tempo","isPrimary":true,"details":{"realm":"stablestudio.dev","intent":"charge","method":"tempo","dynamic":true,"decimals":6,"unit_type":null,"amount_hint":null,"raw_payment":{"intent":"charge","method":"tempo","dynamic":true,"currency":"0x20c000000000000000000000b9537d11c60e8b50","decimals":6,"description":"Grok video generation"},"asset_contract":"0x20c000000000000000000000b9537d11c60e8b50"},"createdAt":"2026-04-18T20:00:05.894Z"}],"sources":[{"listingId":"969919f0-48b0-44d6-9f97-e183733aa4aa","source":"mpp_dev","sourceId":"stablestudio:POST:/api/generate/grok-video/generate","sourceUrl":"https://mpp.dev/api/services","isPrimary":true,"firstSeenAt":"2026-04-18T20:00:05.894Z","lastSeenAt":"2026-04-22T02:45:08.128Z"}],"details":{"listingId":"969919f0-48b0-44d6-9f97-e183733aa4aa","quickStartSnippet":"# 1. POST without payment to get 402 challenge\ncurl -X POST https://stablestudio.dev/api/generate/grok-video/generate \\\n  -H 'Content-Type: application/json' \\\n  -d '{\"prompt\": \"A cat surfing on ocean waves at sunset\", \"duration\": \"6\", \"resolution\": \"720p\", \"aspect_ratio\": \"16:9\"}'\n# Returns 402 with PAYMENT-REQUIRED header (base64 JSON)\n# 2. Decode challenge, sign USDC payment, re-POST with PAYMENT-SIGNATURE header\n# 3. Poll GET /api/jobs/{jobId} with SIGN-IN-WITH-X header until complete","exampleRequest":{"prompt":"A cat surfing on ocean waves at sunset, cinematic lighting","duration":"6","resolution":"720p","aspect_ratio":"16:9"},"exampleResponse":{"type":"grok-video","jobId":"abc123-def456","status":"pending","success":true},"schema":{"path":"/api/generate/grok-video/generate","method":"POST","payment":{"intent":"charge","method":"tempo","dynamic":true,"currency":"0x20c000000000000000000000b9537d11c60e8b50","decimals":6,"description":"Grok video generation"},"description":"Grok video generation"},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Grok-video generate costs $0.15–$0.75 with ~17s generation time","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"Supports durations of 3, 6, 9, 12, 15 seconds at 480p or 720p","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"Payment via USDC on Base (eip155:8453) or Tempo method with pathUSD","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"MCP server available via npx -y agentcash@latest","source_url":"https://stablestudio.dev/agents.txt"},{"claim":"Job polling at GET /api/jobs/{jobId} with SIGN-IN-WITH-X header, videos return videoUrl and thumbnailUrl","source_url":"https://stablestudio.dev/api/openapi.json"}],"useCases":["Generate short video clips from text prompts for social media content","Animate a still image into a video clip using image-to-video mode","Create vertical (9:16) video content for mobile platforms","Produce quick video prototypes or storyboard animations","Agent-driven automated video content pipelines with crypto micropayments"],"bestFor":["Agents or apps needing on-demand short video generation without subscriptions","Developers who want crypto-native pay-per-call video APIs","Quick text-to-video or image-to-video clips up to 15 seconds at 720p"],"notFor":["Long-form video generation (max 15 seconds)","High-resolution video above 720p (use Veo 3.1 or Wan 2.6 for 1080p)","Users without a crypto wallet (requires USDC on Base or pathUSD on Tempo)"],"kindDetails":{"docs":{"llmsTxt":"https://stablestudio.dev/llms.txt","homepage":"https://stablestudio.dev"},"tags":["image","video","generation","nano-banana","gpt-image","grok","flux","sora","veo","seedance","wan"],"realm":"stablestudio.dev","status":"active","methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}},"provider":{"url":"https://stablestudio.dev","name":"Merit Systems"},"categories":["ai","media"],"service_id":"stablestudio","integration":"first-party","service_name":"StableStudio","service_description":"Pay-per-generation AI image and video creation — Nano Banana, GPT Image, Grok, Flux, Sora, Veo, Seedance, and Wan."},"updatedAt":"2026-04-22T02:45:08.128Z"}}