{"id":"3e2a4f82-32e2-4ec3-a0d8-cfad24c51fbf","shortId":"p6CESr","kind":"x402","title":"Generate images via Replicate Flux through an x402-payable agent on Base Sepolia.","tagline":"Generate images via Replicate Flux through an x402-payable agent on Base Sepolia.","description":"This x402 endpoint exposes a Questflow-hosted AI agent that generates high-quality images using Replicate Flux. Callers send a text prompt as the `input` field in a POST request body, and the agent returns a response string (presumably containing the generated image URL or data). Payment is handled via the x402 protocol using USDC on the Base Sepolia testnet, with a maximum cost of 0.1 USDC per request (100000 in 6-decimal USDC units).\n\nThe endpoint is live and returns a proper 402 challenge when called without payment. The output schema is minimal: a single `input` string field for the request and a single `response` string field for the reply. No additional parameters (e.g., image size, style, number of outputs) are documented. The provider, Questflow, is primarily an AI agent platform focused on onchain market aggregation and autonomous trading clones, and this image generation agent appears to be one of their hosted agent offerings.\n\nDocumentation is sparse — there is no OpenAPI spec, no dedicated docs page, and no usage examples beyond what the x402 challenge itself provides. The endpoint runs on a development API subdomain (`api-dev`), suggesting this may be a staging or testnet deployment rather than a production service.","tags":[],"capabilities":["image-generation","replicate-flux","x402-payment","usdc-payment","base-sepolia","text-to-image","agent-endpoint"],"categories":["vision","llm"],"synonyms":["Replicate Flux","text-to-image","AI image generation","Questflow agent","x402 image API","Flux model","image synthesis"],"warnings":["Endpoint is on a development subdomain (api-dev) and uses Base Sepolia testnet — likely not production-ready","No documentation, OpenAPI spec, or usage examples available","Response format (image URL vs. base64 vs. other) is unknown and inferred","The example response JSON is speculative — no actual successful response was captured","maxTimeoutSeconds is 1200 (20 minutes), suggesting potentially long processing times"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:686e427e62eed6598f066dfd","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x0C237b917f598670a66267545FE5c984BF4a991a","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:686e427e62eed6598f066dfd","description":"Generate high-quality images using Replicate Flux. | 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":"0.450","qualityRationale":"The endpoint is live and returns a valid x402 challenge with a basic input/output schema. However, there is no OpenAPI spec, no documentation, no usage examples, and the endpoint is on a dev subdomain using testnet USDC. The response format is inferred since no actual successful response was 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'100000':100 '402':114 '6':102 'AI image generation' 'Flux model' 'Questflow agent' 'Replicate Flux' 'addit':143 'agent':11,25,38,64,161,176,184 'agent-endpoint' 'aggreg':167 'ai':37,160 'api':215,218 'api-dev':217 'appear':177 'autonom':169 'base':13,27,88 'base-sepolia' 'beyond':202 'bodi':61 'call':117 'caller':48 'challeng':115,206 'clone':171 'contain':70 'cost':94 'data':76 'decim':103 'dedic':195 'deploy':228 'dev':219 'develop':214 'doc':196 'document':153,186 'e.g':145 'endpoint':31,107,210 'exampl':201 'expos':32 'field':56,129,138 'flux':5,19,47 'focus':163 'generat':1,15,40,72,175 'handl':79 'high':42 'high-qual':41 'host':36,183 'imag':2,16,44,73,146,174 'image synthesis' 'image-generation' 'input':55,127 'live':109 'market':166 'maximum':93 'may':222 'minim':124 'number':149 'offer':185 'onchain':165 'one':180 'openapi':192 'output':121,151 'page':197 'paramet':144 'payabl':10,24 'payment':77,119 'per':98 'platform':162 'post':59 'presum':69 'primarili':158 'product':232 'prompt':52 'proper':113 'protocol':83 'provid':155,208 'qualiti':43 'questflow':35,156 'questflow-host':34 'rather':229 'repli':141 'replic':4,18,46 'replicate-flux' 'request':60,99,132 'respons':67,136 'return':65,111 'run':211 'schema':122 'send':49 'sepolia':14,28,89 'servic':233 'singl':126,135 'size':147 'spars':188 'spec':193 'stage':225 'string':68,128,137 'style':148 'subdomain':216 'suggest':220 'testnet':90,227 'text':51 'text-to-image' 'trade':170 'unit':105 'url':74 'usag':200 'usdc':85,97,104 'usdc-payment' 'use':45,84 'via':3,17,80 'without':118 'x402':9,23,30,82,205 'x402 image API' 'x402-payable':8,22 'x402-payment'","prices":[{"id":"01bb36c5-4937-4e91-a64b-3faa1b16c769","listingId":"3e2a4f82-32e2-4ec3-a0d8-cfad24c51fbf","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"100000","chain":"base-sepolia","payTo":"0x0C237b917f598670a66267545FE5c984BF4a991a","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x0C237b917f598670a66267545FE5c984BF4a991a","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:686e427e62eed6598f066dfd","description":"Generate high-quality images using Replicate Flux. | 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":"2026-04-18T18:31:21.508Z"}],"sources":[{"listingId":"3e2a4f82-32e2-4ec3-a0d8-cfad24c51fbf","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:686e427e62eed6598f066dfd","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:21.508Z","lastSeenAt":"2026-04-22T02:30:11.501Z"}],"details":{"listingId":"3e2a4f82-32e2-4ec3-a0d8-cfad24c51fbf","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:686e427e62eed6598f066dfd \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"input\": \"A futuristic cityscape at sunset\"}'","exampleRequest":{"input":"A futuristic cityscape at sunset with neon lights"},"exampleResponse":{"response":"https://replicate.delivery/example/generated-image.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":"The endpoint returns a 402 challenge requiring USDC payment on Base Sepolia with maxAmountRequired of 100000","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:686e427e62eed6598f066dfd"},{"claim":"The x402 challenge describes the service as 'Generate high-quality images using Replicate Flux'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:686e427e62eed6598f066dfd"},{"claim":"Questflow is an AI agent platform focused on onchain market aggregation and autonomous trading","source_url":"https://api-dev.intra-tls2.dctx.link"},{"claim":"The input schema accepts a single 'input' string field and returns a single 'response' string field","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:686e427e62eed6598f066dfd"}],"useCases":["Generating images from text prompts via a pay-per-request model","Agent-to-agent image generation where the caller pays with USDC on Base Sepolia","Prototyping x402-based image generation workflows on testnet"],"bestFor":["Developers experimenting with x402 payment protocol for AI services","Agents needing on-demand image generation with crypto micropayments","Testing pay-per-call image generation on Base Sepolia testnet"],"notFor":["Production image generation workloads (this appears to be a dev/testnet endpoint)","Users needing fine-grained control over image parameters (size, style, etc.)","Anyone requiring mainnet payment settlement"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:10.956Z"},"updatedAt":"2026-04-22T02:30:11.501Z"}}