{"id":"06c81ac4-25ad-4ac3-981b-3351d9633398","shortId":"gzwRkR","kind":"mpp","title":"GPT Image 1.5 generation via micropayments — $0.009–$0.20 per image, ~3s, no API key needed.","tagline":"GPT Image 1.5 generation via micropayments — $0.009–$0.20 per image, ~3s, no API key needed.","description":"This endpoint generates images using OpenAI's GPT Image 1.5 model, accessed through StableStudio's pay-per-call micropayment platform. It accepts a text prompt and optional parameters for quality (low/medium/high), size (1024x1024, 1536x1024, 1024x1536, or auto), background (transparent/opaque/auto), output format (png/jpeg/webp), compression level, and content moderation strictness. Pricing is dynamic, ranging from $0.009 to $0.20 per generation depending on quality and size settings. Generation takes approximately 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 — 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} with a SIGN-IN-WITH-X wallet signature header until the job completes and returns an imageUrl.\n\nStableStudio also exposes a companion edit endpoint at /api/generate/gpt-image-1.5/edit that accepts reference images for image editing tasks. The platform hosts many other models (Nano Banana Pro, Flux 2 Pro, Grok, Seedance, Wan, Sora, Veo) for both image and video generation, all using the same payment flow. An MCP server is available via `npx -y agentcash@latest` for agent integration.","tags":["image","video","generation","nano-banana","gpt-image","grok","flux","sora","veo","seedance","wan"],"capabilities":["text-to-image","image-generation","gpt-image-1.5","transparent-background","quality-control","multiple-output-formats","dynamic-pricing","micropayment","x402","mpp-tempo","usdc-base","no-api-key","async-job-polling"],"categories":["vision","image-generation"],"synonyms":["GPT Image 1.5","OpenAI image generation","text to image API","AI image generator","StableStudio GPT image","pay-per-image","micropayment image API","DALL-E alternative","image generation endpoint"],"warnings":["Probe returned 405 because HEAD/GET were used on a POST-only endpoint; this does not indicate the endpoint is down","Requires a crypto wallet with USDC on Base (eip155:8453) or pathUSD on Tempo to make payments","No dedicated documentation page found (/docs returns 404); all docs are embedded in OpenAPI x-guidance"],"endpointUrl":"https://stablestudio.dev/api/generate/gpt-image-1.5/generate","protocol":"mpp","transport":"http","auth":{"type":"mpp","details":{"realm":"stablestudio.dev","intent":"charge","method":"tempo","service_methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}}}},"qualityScore":"0.880","qualityRationale":"Full OpenAPI schema with detailed input/output definitions, clear pricing, comprehensive payment flow documentation, and agents.txt present. The endpoint returned 405 on HEAD/GET probes (expected since it's POST-only), but the OpenAPI spec and guidance docs confirm it is live and well-documented. Minor deduction for no direct 402 challenge captured on this specific endpoint and no dedicated docs 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'/api/jobs':161 '0.009':7,22,85 '0.20':8,23,87 '1.5':3,18,40 '1024x1024':64 '1024x1536':66 '1536x1024':65 '2':208 '3':99 '3s':11,26 '402':134 '8453':119 'AI image generator' 'DALL-E alternative' 'GPT Image 1.5' 'OpenAI image generation' 'StableStudio GPT image' 'accept':53,191 'access':42 'agent':238 'agentcash':235 'also':182 'api':13,28,121 'approxim':98 'async-job-polling' 'author':140 'auto':68 'avail':231 'background':69 'banana':205 'base':116 'call':49 'caller':127,157 'challeng':136 'companion':185 'complet':176 'compress':74 'content':77 'depend':90 'dynam':82 'dynamic-pricing' 'edit':186,196 'eip155':118 'endpoint':32,131,187 'expos':183 'flow':226 'flux':207 'format':72 'generat':4,19,33,89,96,220 'get':160 'gpt':1,16,38 'gpt-image-1.5' 'grok':210 'handl':103 'header':148,172 'host':200 'imag':2,10,17,25,34,39,193,195,217 'image generation endpoint' 'image-generation' 'imageurl':180 'integr':239 'job':175 'jobid':153,162 'key':14,29,122 'latest':236 'level':75 'low/medium/high':62 'mani':201 'mcp':228 'method':109 'micropay':6,21,50 'micropayment' 'micropayment image API' 'model':41,203 'moder':78 'mpp':106 'mpp-tempo' 'multiple-output-formats' 'nano':204 'need':15,30 'network':117 'no-api-key' 'npx':233 'openai':36 'option':58 'output':71 'paramet':59 'pathusd':111 'pay':47 'pay-per-cal':46 'pay-per-image' 'payment':101,135,146,225 'payment-signatur':145 'pend':156 'per':9,24,48,88 'platform':51,199 'png/jpeg/webp':73 'poll':159 'post':128 'price':80 'pro':206,209 'prompt':56 'protocol':107 'qualiti':61,92 'quality-control' 'rang':83 'receiv':132 'refer':192 'requir':126 'respons':150 'resubmit':142 'return':151,178 'second':100 'seedanc':211 'server':229 'set':95 'sign':137,166 'sign-in-with-x':165 'signatur':147,171 'size':63,94 'sora':213 'stablestudio':44,181 'status':155 'strict':79 'subscript':124 'take':97 'task':197 'tempo':108 'text':55 'text to image API' 'text-to-image' 'transparent-background' 'transparent/opaque/auto':70 'usdc':114 'usdc-base' 'usdc/pathusd':139 'use':35,222 'veo':214 'via':5,20,104,232 'video':219 'wallet':170 'wan':212 'x':169 'x402':113 'y':234","prices":[{"id":"30a9c32a-0a38-4193-b246-77b1354ef447","listingId":"06c81ac4-25ad-4ac3-981b-3351d9633398","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":"GPT Image 1.5 generation"},"asset_contract":"0x20c000000000000000000000b9537d11c60e8b50"},"createdAt":"2026-04-18T20:00:06.517Z"}],"sources":[{"listingId":"06c81ac4-25ad-4ac3-981b-3351d9633398","source":"mpp_dev","sourceId":"stablestudio:POST:/api/generate/gpt-image-1.5/generate","sourceUrl":"https://mpp.dev/api/services","isPrimary":true,"firstSeenAt":"2026-04-18T20:00:06.517Z","lastSeenAt":"2026-04-22T04:15:10.191Z"}],"details":{"listingId":"06c81ac4-25ad-4ac3-981b-3351d9633398","quickStartSnippet":"# 1. Send request without payment to get 402 challenge\ncurl -X POST https://stablestudio.dev/api/generate/gpt-image-1.5/generate \\\n  -H 'Content-Type: application/json' \\\n  -d '{\"prompt\": \"A cat astronaut floating in space\", \"quality\": \"high\", \"size\": \"1024x1024\"}'\n# Returns 402 with PAYMENT-REQUIRED header (base64 JSON)\n# 2. Decode challenge, sign USDC payment, resend with PAYMENT-SIGNATURE header\n# 3. Poll GET /api/jobs/{jobId} with SIGN-IN-WITH-X header until complete","exampleRequest":{"size":"1024x1024","prompt":"A cat astronaut floating in space, photorealistic","quality":"high","background":"opaque","moderation":"auto","output_format":"png"},"exampleResponse":{"type":"gpt-image-1.5","jobId":"abc123-def456","status":"pending","success":true},"schema":{"path":"/api/generate/gpt-image-1.5/generate","method":"POST","payment":{"intent":"charge","method":"tempo","dynamic":true,"currency":"0x20c000000000000000000000b9537d11c60e8b50","decimals":6,"description":"GPT Image 1.5 generation"},"description":"GPT Image 1.5 generation"},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"GPT Image 1.5 generate costs $0.009–$0.20 per call and takes ~3s","source_url":"https://stablestudio.dev"},{"claim":"Payment is via USDC on Base (eip155:8453) or Tempo method with pathUSD","source_url":"https://stablestudio.dev"},{"claim":"Input schema supports prompt, quality, size, background, output_format, output_compression, and moderation parameters","source_url":"https://stablestudio.dev"},{"claim":"MCP server available via npx -y agentcash@latest","source_url":"https://stablestudio.dev"},{"claim":"agents.txt lists gpt-image-1.5 at $0.009-0.20 with ~3s latency","source_url":"https://stablestudio.dev"}],"useCases":["Generate images from text prompts with configurable quality and size","Create images with transparent backgrounds for design assets","Produce quick low-cost draft images at $0.009 per call","Agent-driven image generation with crypto micropayments","Batch image creation workflows without subscription commitments"],"bestFor":["Agents or apps needing fast, cheap text-to-image with no API key signup","Generating images with transparent backgrounds (PNG output)","Low-latency image generation (~3 seconds)","Crypto-native applications paying per call with USDC or pathUSD"],"notFor":["High-volume batch jobs where subscription pricing would be cheaper","Users without a crypto wallet (requires USDC on Base or pathUSD on Tempo)","Image editing with reference images (use the /edit endpoint instead)"],"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":"2026-04-22T04:15:10.191Z"}}