{"id":"dcf3e3de-40f5-406d-a9d2-6d2db90794d5","shortId":"pvCUhQ","kind":"mpp","title":"Upload images to StableStudio for editing or image-to-video workflows, paid via USDC micropayment ($0.01).","tagline":"Upload images to StableStudio for editing or image-to-video workflows, paid via USDC micropayment ($0.01).","description":"The `/api/upload` endpoint is part of StableStudio, a pay-per-generation AI image and video platform that accepts USDC micropayments on Base (or Tempo L2) with no API keys or subscriptions. This specific endpoint handles the first step of a three-step file upload flow: you POST a JSON body with `filename` and `contentType`, pay $0.01 via a signed USDC payment header, and receive back an `uploadId` plus a `clientToken` for direct upload to Vercel Blob storage. After uploading the file to Vercel Blob (step 2), you confirm the upload at `/api/upload/confirm` (step 3, authenticated via SIGN-IN-WITH-X wallet signature, no additional payment). The resulting `blobUrl` can then be used as input to any of StableStudio's edit or image-to-video endpoints.\n\nStableStudio supports a wide range of models for downstream use of uploaded images: Nano Banana Pro and GPT Image 1.5 for image editing, Flux 2 Pro and Grok for image editing, and Seedance, Wan 2.6, Sora 2, Veo 3.1, and Grok Video for image-to-video generation. Accepted content types are JPEG, PNG, GIF, and WebP. The endpoint accepts both x402 and MPP (Tempo method, charge intent) payment protocols. The upload endpoint is POST-only; HEAD and GET return 405, which is expected behavior for this route.","tags":["image","video","generation","nano-banana","gpt-image","grok","flux","sora","veo","seedance","wan"],"capabilities":["file-upload","image-upload","vercel-blob-storage","usdc-micropayment","base-l2-payment","tempo-l2-payment","x402-protocol","mpp-protocol","wallet-auth","image-editing-prep","image-to-video-prep"],"categories":["vision","storage"],"synonyms":["image upload","file upload for AI","upload image for editing","upload image for video","StableStudio upload","blob upload","image-to-video upload","reference image upload"],"warnings":["Probe returned 405 on HEAD and GET — this is expected since /api/upload is POST-only; the endpoint is live","The OpenAPI 200 response for /api/upload lacks a formal JSON schema; response shape is documented only in the x-guidance text","Upload is only step 1 of 3; agents must also call Vercel Blob PUT and /api/upload/confirm to complete the flow"],"endpointUrl":"https://stablestudio.dev/api/upload","protocol":"mpp","transport":"http","auth":{"type":"mpp","details":{"realm":"stablestudio.dev","intent":"charge","method":"tempo","service_methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}}}},"qualityScore":"0.880","qualityRationale":"Full OpenAPI schema with detailed request/response documentation, clear pricing ($0.01 fixed), complete three-step upload flow documented in x-guidance, and dual protocol support (x402 + MPP). The endpoint returned 405 on HEAD/GET probes, which is expected since it's POST-only. The 200 response schema is not fully specified in the OpenAPI (just \"Successful response\"), but the guidance docs describe the response shape in 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'/api/upload/confirm':128 '0.01':17,34,92 '1.5':183 '2':122,188,200 '2.6':198 '3':130 '3.1':202 '405':245 'StableStudio upload' 'accept':53,212,223 'addit':141 'ai':47 'api':63 'authent':131 'back':101 'banana':178 'base':57 'base-l2-payment' 'behavior':249 'blob':112,120 'blob upload' 'bloburl':145 'bodi':86 'charg':230 'clienttoken':106 'confirm':124 'content':213 'contenttyp':90 'direct':108 'downstream':172 'edit':6,23,157,186,194 'endpoint':37,69,163,222,236 'expect':248 'file':79,117 'file upload for AI' 'file-upload' 'filenam':88 'first':72 'flow':81 'flux':187 'generat':46,211 'get':243 'gif':218 'gpt':181 'grok':191,204 'handl':70 'head':241 'header':98 'imag':2,9,19,26,48,160,176,182,185,193,208 'image upload' 'image-editing-prep' 'image-to-video':8,25,159,207 'image-to-video upload' 'image-to-video-prep' 'image-upload' 'input':151 'intent':231 'jpeg':216 'json':85 'key':64 'l2':60 'method':229 'micropay':16,33,55 'model':170 'mpp':227 'mpp-protocol' 'nano':177 'paid':13,30 'part':39 'pay':44,91 'pay-per-gener':43 'payment':97,142,232 'per':45 'platform':51 'plus':104 'png':217 'post':83,239 'post-on':238 'pro':179,189 'protocol':233 'rang':168 'receiv':100 'reference image upload' 'result':144 'return':244 'rout':252 'seedanc':196 'sign':95,134 'sign-in-with-x':133 'signatur':139 'sora':199 'specif':68 'stablestudio':4,21,41,155,164 'step':73,78,121,129 'storag':113 'subscript':66 'support':165 'tempo':59,228 'tempo-l2-payment' 'three':77 'three-step':76 'type':214 'upload':1,18,80,109,115,126,175,235 'upload image for editing' 'upload image for video' 'uploadid':103 'usdc':15,32,54,96 'usdc-micropayment' 'use':149,173 'veo':201 'vercel':111,119 'vercel-blob-storage' 'via':14,31,93,132 'video':11,28,50,162,205,210 'wallet':138 'wallet-auth' 'wan':197 'webp':220 'wide':167 'workflow':12,29 'x':137 'x402':225 'x402-protocol'","prices":[{"id":"df7c7443-5327-44c7-b163-6cb856d57464","listingId":"dcf3e3de-40f5-406d-a9d2-6d2db90794d5","amountUsd":"0.01","unit":"per_call","nativeCurrency":"pathUSD","nativeAmount":"10000","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":"10000","intent":"charge","method":"tempo","currency":"0x20c000000000000000000000b9537d11c60e8b50","decimals":6,"description":"Upload image for editing or image-to-video"},"asset_contract":"0x20c000000000000000000000b9537d11c60e8b50"},"createdAt":"2026-04-18T20:00:09.583Z"}],"sources":[{"listingId":"dcf3e3de-40f5-406d-a9d2-6d2db90794d5","source":"mpp_dev","sourceId":"stablestudio:POST:/api/upload","sourceUrl":"https://mpp.dev/api/services","isPrimary":true,"firstSeenAt":"2026-04-18T20:00:09.583Z","lastSeenAt":"2026-04-22T02:45:08.369Z"}],"details":{"listingId":"dcf3e3de-40f5-406d-a9d2-6d2db90794d5","quickStartSnippet":"# Step 1: Request upload token (requires PAYMENT-SIGNATURE header with signed USDC auth)\ncurl -X POST https://stablestudio.dev/api/upload \\\n  -H 'Content-Type: application/json' \\\n  -H 'PAYMENT-SIGNATURE: <signed-usdc-payment>' \\\n  -d '{\"filename\": \"photo.png\", \"contentType\": \"image/png\"}'","exampleRequest":{"filename":"photo.png","contentType":"image/png"},"exampleResponse":{"pathname":"uploads/a1b2c3d4-e5f6-7890-abcd-ef1234567890/photo.png","uploadId":"a1b2c3d4-e5f6-7890-abcd-ef1234567890","expiresAt":"2025-01-15T12:30:00.000Z","clientToken":"vercel_blob_rw_abc123..."},"schema":{"path":"/api/upload","method":"POST","payment":{"amount":"10000","intent":"charge","method":"tempo","currency":"0x20c000000000000000000000b9537d11c60e8b50","decimals":6,"description":"Upload image for editing or image-to-video"},"description":"Upload image for editing or image-to-video"},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Upload endpoint costs $0.01 (fixed price)","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"Accepted content types: image/jpeg, image/jpg, image/png, image/gif, image/webp","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"Three-step upload flow: get token, upload to Vercel Blob, confirm","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"Payment via USDC on Base (eip155:8453) or Tempo L2","source_url":"https://stablestudio.dev/api/openapi.json"},{"claim":"Supports both x402 and MPP (method: tempo, intent: charge) protocols","source_url":"https://stablestudio.dev/api/openapi.json"}],"useCases":["Upload a reference image before running an image edit with Nano Banana Pro, GPT Image 1.5, Flux 2 Pro, or Grok","Upload a first-frame image for image-to-video generation with Seedance, Wan 2.6, Sora 2, or Veo 3.1","Upload style reference images for Veo 3.1 reference mode","Upload interpolation frames (first + last) for Veo 3.1 or Seedance interpolation"],"bestFor":["Agents that need to programmatically upload images before calling StableStudio edit/i2v endpoints","Workflows combining image upload with pay-per-call AI generation","Automated pipelines that need keyless, wallet-authenticated file staging"],"notFor":["Standalone file hosting — uploaded blobs are scoped to StableStudio workflows","Large file or non-image uploads (only JPEG, PNG, GIF, WebP accepted)","Users who only need text-to-image or text-to-video (no upload needed)"],"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":"2026-04-22T02:45:08.369Z"}}