{"id":"a3175f25-15fe-4f3a-8530-b100b935ee77","shortId":"HWKQYN","kind":"mpp","title":"Grok-powered image editing via micropayments — $0.022 per edit, ~3s latency","tagline":"Grok-powered image editing via micropayments — $0.022 per edit, ~3s latency","description":"This endpoint provides AI image editing using xAI's Grok model, accessed through StableStudio's pay-per-generation platform. You POST a prompt and one or more reference image URLs (previously uploaded via StableStudio's file upload flow) along with an optional aspect ratio, and receive a job ID. You then poll the job status endpoint until the edited image URL is returned. The endpoint costs $0.022 per edit and typically completes in about 3 seconds.\n\nPayment is handled via the MPP protocol (Tempo method on pathUSD) or x402 (USDC on Base, network eip155:8453). No API keys or subscriptions are required — each call is paid individually with a signed crypto transaction. The flow is: (1) POST without payment to receive a 402 challenge with the exact amount, (2) sign the payment and re-POST with the PAYMENT-SIGNATURE header to get a pending job, (3) poll GET /api/jobs/{jobId} with a SIGN-IN-WITH-X wallet signature header until the result contains an imageUrl.\n\nGrok edit supports 13 aspect ratios including standard (1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3), wide (2:1, 1:2), and ultra-wide (19.5:9, 9:19.5, 20:9, 9:20). Reference images must first be uploaded through StableStudio's three-step upload flow ($0.01) to obtain blob URLs. The endpoint is part of a broader StableStudio platform that also offers generation and editing via Nano Banana Pro, GPT Image 1.5, Flux 2 Pro, Grok Video, Seedance, Wan, Sora, and Veo models.","tags":["image","video","generation","nano-banana","gpt-image","grok","flux","sora","veo","seedance","wan"],"capabilities":["image-editing","grok-model","prompt-based-editing","multi-aspect-ratio","ultra-wide-aspect-ratio","micropayment","mpp-tempo","x402-usdc","async-job-polling","reference-image-input"],"categories":["vision","image-editing"],"synonyms":["grok image edit","xai image editing","ai photo editing","image manipulation api","grok edit endpoint","stablestudio grok","pay-per-use image editing","crypto image editing"],"warnings":["Probe returned 405 because HEAD/GET are not supported; endpoint requires POST method","Reference images must be uploaded first via the paid /api/upload flow ($0.01) before editing","No dedicated documentation page exists at /docs (returns 404)"],"endpointUrl":"https://stablestudio.dev/api/generate/grok/edit","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 ($0.022), documented payment flow, and comprehensive guidance. The probe returned 405 (not 402) because the endpoint only accepts POST, not HEAD/GET — this is expected behavior, not a liveness issue. Deducted slightly because no direct 402 challenge was captured for this specific endpoint and no /docs page 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'0.01':247 '0.022':8,20,92 '1':141,202,203,218,219 '1.5':273 '13':197 '16':204,207 '19.5':225,228 '2':154,213,214,217,220,275 '20':229,232 '3':100,173,209,210,212,215 '3s':11,23 '4':208,211 '402':148 '8453':120 '9':205,206,226,227,230,231 'access':36 'ai':28 'ai photo editing' 'along':64 'also':262 'amount':153 'api':122 'aspect':68,198 'async-job-polling' 'banana':269 'base':117 'blob':250 'broader':258 'call':129 'challeng':149 'complet':97 'contain':191 'cost':91 'crypto':136 'crypto image editing' 'edit':5,10,17,22,30,84,94,195,266 'eip155':119 'endpoint':26,81,90,253 'exact':152 'file':61 'first':236 'flow':63,139,246 'flux':274 'generat':43,264 'get':169,175 'gpt':271 'grok':2,14,34,194,277 'grok edit endpoint' 'grok image edit' 'grok-model' 'grok-pow':1,13 'handl':104 'header':167,187 'id':74 'imag':4,16,29,54,85,234,272 'image manipulation api' 'image-editing' 'imageurl':193 'includ':200 'individu':132 'job':73,79,172 'jobid':177 'key':123 'latenc':12,24 'method':110 'micropay':7,19 'micropayment' 'model':35,284 'mpp':107 'mpp-tempo' 'multi-aspect-ratio' 'must':235 'nano':268 'network':118 'obtain':249 'offer':263 'one':50 'option':67 'paid':131 'part':255 'pathusd':112 'pay':41 'pay-per-gener':40 'pay-per-use image editing' 'payment':102,144,157,165 'payment-signatur':164 'pend':171 'per':9,21,42,93 'platform':44,260 'poll':77,174 'post':46,142,161 'power':3,15 'previous':56 'pro':270,276 'prompt':48 'prompt-based-editing' 'protocol':108 'provid':27 'ratio':69,199 're':160 're-post':159 'receiv':71,146 'refer':53,233 'reference-image-input' 'requir':127 'result':190 'return':88 'second':101 'seedanc':279 'sign':135,155,181 'sign-in-with-x':180 'signatur':166,186 'sora':281 'stablestudio':38,59,240,259 'stablestudio grok' 'standard':201 'status':80 'step':244 'subscript':125 'support':196 'tempo':109 'three':243 'three-step':242 'transact':137 'typic':96 'ultra':223 'ultra-wid':222 'ultra-wide-aspect-ratio' 'upload':57,62,238,245 'url':55,86,251 'usdc':115 'use':31 'veo':283 'via':6,18,58,105,267 'video':278 'wallet':185 'wan':280 'wide':216,224 'without':143 'x':184 'x402':114 'x402-usdc' 'xai':32 'xai image editing'","prices":[{"id":"7e026f5b-049d-4f15-9e0b-3ee4d4674940","listingId":"a3175f25-15fe-4f3a-8530-b100b935ee77","amountUsd":"0.022","unit":"per_call","nativeCurrency":"pathUSD","nativeAmount":"22000","chain":"tempo","payTo":null,"paymentMethod":"mpp-tempo","isPrimary":true,"details":{"realm":"stablestudio.dev","intent":"charge","method":"tempo","dynamic":false,"decimals":6,"unit_type":null,"amount_hint":null,"raw_payment":{"amount":"22000","intent":"charge","method":"tempo","currency":"0x20c000000000000000000000b9537d11c60e8b50","decimals":6,"description":"Grok image editing"},"asset_contract":"0x20c000000000000000000000b9537d11c60e8b50"},"createdAt":"2026-04-18T20:00:05.266Z"}],"sources":[{"listingId":"a3175f25-15fe-4f3a-8530-b100b935ee77","source":"mpp_dev","sourceId":"stablestudio:POST:/api/generate/grok/edit","sourceUrl":"https://mpp.dev/api/services","isPrimary":true,"firstSeenAt":"2026-04-18T20:00:05.266Z","lastSeenAt":"2026-04-22T04:15:10.138Z"}],"details":{"listingId":"a3175f25-15fe-4f3a-8530-b100b935ee77","quickStartSnippet":"# 1. POST to get 402 challenge\ncurl -X POST https://stablestudio.dev/api/generate/grok/edit \\\n  -H 'Content-Type: application/json' \\\n  -d '{\"prompt\": \"Add sunglasses to the person\", \"images\": [\"https://your-blob-url.vercel-storage.com/img.png\"]}'\n# Returns 402 with PAYMENT-REQUIRED header\n# 2. Sign payment, re-POST with PAYMENT-SIGNATURE header\n# 3. Poll GET /api/jobs/{jobId} with SIGN-IN-WITH-X header","exampleRequest":{"images":["https://example.blob.vercel-storage.com/uploads/abc/photo.png"],"prompt":"Add sunglasses to the person in the photo","aspect_ratio":"16:9"},"exampleResponse":{"type":"grok-edit","jobId":"job_abc123","status":"pending","success":true},"schema":{"path":"/api/generate/grok/edit","method":"POST","payment":{"amount":"22000","intent":"charge","method":"tempo","currency":"0x20c000000000000000000000b9537d11c60e8b50","decimals":6,"description":"Grok image editing"},"description":"Grok image editing"},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Grok edit costs $0.022 per call with ~3s latency","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"Grok edit accepts prompt, aspect_ratio, and images fields","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"Payment is USDC on Base (eip155:8453) or pathUSD via Tempo","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"13 aspect ratios supported including ultra-wide 19.5:9, 20:9","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"File upload flow costs $0.01 and uses Vercel Blob storage","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"StableStudio describes itself as AI image/video generation via micropayments","source_url":"https://stablestudio.dev"}],"useCases":["Edit or modify existing images using natural language prompts via Grok","Apply style changes, object additions/removals, or transformations to uploaded images","Integrate low-cost image editing into agent workflows without API key management","Build automated image processing pipelines with per-call micropayments"],"bestFor":["Agents needing cheap, fast image edits ($0.022/call, ~3s)","Workflows requiring ultra-wide or unusual aspect ratios (up to 20:9)","Developers who want pay-per-use image editing without subscriptions or API keys"],"notFor":["Batch processing thousands of images (each requires a separate crypto payment)","Use cases requiring fiat/credit-card payment (crypto wallet required)","Real-time editing with sub-second latency (async job polling adds overhead)"],"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":"2026-04-22T04:15:10.138Z"}}