{"id":"ffe63fda-22d8-4745-87da-bdfe8ca67b63","shortId":"tG5U5L","kind":"x402","title":"Generate images via OpenAI through a pay-per-request x402 endpoint on Base Sepolia.","tagline":"Generate images via OpenAI through a pay-per-request x402 endpoint on Base Sepolia.","description":"This x402-enabled endpoint wraps OpenAI image generation behind a crypto-native paywall hosted by Questflow. Callers send a POST request with a text prompt in the `input` field and receive a generated image response. Payment is handled via the x402 protocol using USDC on the Base Sepolia testnet, with a maximum charge of 0.1 USDC per request (100000 units at 6 decimals).\n\nThe endpoint is discoverable and accepts a simple JSON body with a single required string field (`input`). The response returns a string in the `response` field. No further documentation, OpenAPI spec, or usage examples are provided by the operator. The underlying Questflow platform is primarily focused on autonomous AI trading agents (\"Clones\") for prediction and crypto markets, and this image generation agent appears to be one of potentially many agents exposed through their x402 infrastructure.\n\nNote that this endpoint operates on Base Sepolia (a testnet), which means it is likely in a development or staging phase. There is no official API documentation, no rate limit information, and no details about which specific OpenAI image model is used. The maximum timeout is 1200 seconds (20 minutes), suggesting potentially long-running generation tasks.","tags":[],"capabilities":["image-generation","openai-integration","x402-payment","base-sepolia-usdc","text-to-image","pay-per-request"],"categories":["vision","llm"],"synonyms":["AI image generation","OpenAI DALL-E","text-to-image API","x402 image endpoint","crypto-paid image generation","Questflow image agent"],"warnings":["Endpoint is on Base Sepolia testnet—not suitable for production use","No API documentation or OpenAPI spec available","Response format is inferred; actual output structure is unverified","No information about which OpenAI image model is used (DALL-E 2, DALL-E 3, gpt-image-1, etc.)","Maximum timeout of 1200 seconds suggests potentially very long response times","The example_response_json is speculative—actual response format is unknown"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:687f3708eb51e7d6d6849d8c","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xDDc61c9781aBC70E83Daf3AaDB9b3D7BE0fc3eD7","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:687f3708eb51e7d6d6849d8c","description":"Generate high-quality images using OpenAI. | Powered by Questflow","outputSchema":{"input":{"type":"http","method":"POST","bodyFields":{"input":{"type":"string","required":true,"description":"Your message to the agent"}},"discoverable":true},"output":{"response":{"type":"string","required":true,"description":"Response from the agent"}}},"maxAmountRequired":"100000","maxTimeoutSeconds":1200}]},"qualityScore":"0.300","qualityRationale":"No OpenAPI spec, no dedicated docs, no usage examples, and the endpoint runs on a testnet (Base Sepolia). The only schema information comes from the x402 challenge payload. The response format is inferred—it is unclear whether the response contains a URL, base64 data, or something 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'100000':91 '1200':217 '20':219 '6':94 'AI image generation' 'OpenAI DALL-E' 'Questflow image agent' 'accept':101 'agent':146,157,165 'ai':144 'api':196 'appear':158 'autonom':143 'base':14,29,79,177 'base-sepolia-usdc' 'behind':40 'bodi':105 'caller':49 'charg':85 'clone':147 'crypto':43,151 'crypto-n':42 'crypto-paid image generation' 'decim':95 'detail':204 'develop':188 'discover':99 'document':124,197 'enabl':34 'endpoint':12,27,35,97,174 'exampl':129 'expos':166 'field':61,111,121 'focus':141 'generat':1,16,39,65,156,226 'handl':70 'host':46 'imag':2,17,38,66,155,209 'image-generation' 'inform':201 'infrastructur':170 'input':60,112 'json':104 'like':185 'limit':200 'long':224 'long-run':223 'mani':164 'market':152 'maximum':84,214 'mean':182 'minut':220 'model':210 'nativ':44 'note':171 'offici':195 'one':161 'openai':4,19,37,208 'openai-integration' 'openapi':125 'oper':134,175 'pay':8,23 'pay-per-request':7,22 'payment':68 'paywal':45 'per':9,24,89 'phase':191 'platform':138 'post':52 'potenti':163,222 'predict':149 'primarili':140 'prompt':57 'protocol':74 'provid':131 'questflow':48,137 'rate':199 'receiv':63 'request':10,25,53,90 'requir':109 'respons':67,114,120 'return':115 'run':225 'second':218 'send':50 'sepolia':15,30,80,178 'simpl':103 'singl':108 'spec':126 'specif':207 'stage':190 'string':110,117 'suggest':221 'task':227 'testnet':81,180 'text':56 'text-to-image' 'text-to-image API' 'timeout':215 'trade':145 'under':136 'unit':92 'usag':128 'usdc':76,88 'use':75,212 'via':3,18,71 'wrap':36 'x402':11,26,33,73,169 'x402 image endpoint' 'x402-enabled':32 'x402-payment'","prices":[{"id":"6a803d5f-563a-48ed-90d0-c993881317f1","listingId":"ffe63fda-22d8-4745-87da-bdfe8ca67b63","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"100000","chain":"base-sepolia","payTo":"0xDDc61c9781aBC70E83Daf3AaDB9b3D7BE0fc3eD7","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xDDc61c9781aBC70E83Daf3AaDB9b3D7BE0fc3eD7","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:687f3708eb51e7d6d6849d8c","description":"Generate high-quality images using OpenAI. | Powered by Questflow","outputSchema":{"input":{"type":"http","method":"POST","bodyFields":{"input":{"type":"string","required":true,"description":"Your message to the agent"}},"discoverable":true},"output":{"response":{"type":"string","required":true,"description":"Response from the agent"}}},"maxAmountRequired":"100000","maxTimeoutSeconds":1200}],"asset_contract":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","max_timeout_seconds":1200},"createdAt":"2026-04-18T06:06:24.842Z"}],"sources":[{"listingId":"ffe63fda-22d8-4745-87da-bdfe8ca67b63","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:687f3708eb51e7d6d6849d8c","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T06:06:24.842Z","lastSeenAt":"2026-04-22T02:30:07.982Z"}],"details":{"listingId":"ffe63fda-22d8-4745-87da-bdfe8ca67b63","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:687f3708eb51e7d6d6849d8c \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"input\": \"A futuristic city skyline at sunset\"}'","exampleRequest":{"input":"A futuristic city skyline at sunset"},"exampleResponse":{"response":"https://example.com/generated-image-url.png"},"schema":{"input":{"type":"http","method":"POST","bodyFields":{"input":{"type":"string","required":true,"description":"Your message to the agent"}},"discoverable":true},"output":{"response":{"type":"string","required":true,"description":"Response from the agent"}}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"x402 payment uses USDC on Base Sepolia with maxAmountRequired of 100000","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:687f3708eb51e7d6d6849d8c"},{"claim":"The endpoint accepts a POST with a required 'input' string field and returns a 'response' string","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:687f3708eb51e7d6d6849d8c"},{"claim":"Maximum timeout is 1200 seconds","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:687f3708eb51e7d6d6849d8c"},{"claim":"Questflow is a platform for autonomous AI trading agents","source_url":"https://api-dev.intra-tls2.dctx.link"}],"useCases":["Generating images from text prompts with crypto micropayments","Agent-to-agent image generation where the caller pays per request via x402","Prototyping x402-based workflows that include image generation steps"],"bestFor":["Developers experimenting with x402 payment protocol for AI services","Agents needing on-demand image generation with crypto-native billing","Testing pay-per-call image generation on a testnet before mainnet deployment"],"notFor":["Production image generation workloads (testnet only)","Users who need detailed API documentation or SLAs","High-volume or low-latency image generation pipelines"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:49.39Z"},"updatedAt":"2026-04-22T02:30:07.982Z"}}