{"id":"f4b0f067-ac49-44fc-8101-9fde7121daf4","shortId":"M85Jtf","kind":"x402","title":"x402-payable agent returning Hello World UI block designs in various styles","tagline":"x402-payable agent returning Hello World UI block designs in various styles","description":"This endpoint is an x402-gated agent hosted on Questflow's development API that generates a set of Hello World UI blocks spanning minimal centered layouts, gradient designs, animations, and neon-styled versions. It accepts a text prompt via a POST request with an `input` field and returns a string response from the agent.\n\nPayment is required via the x402 protocol on the Base Sepolia testnet using USDC (contract 0x036CbD53842c5426634e7929541eC2318f3dCF7e). The maximum amount required per request is 500,000 units (likely 0.50 USDC given 6 decimals), with a maximum timeout of 1,200 seconds. The endpoint is discoverable and uses the \"exact\" payment scheme.\n\nDocumentation is extremely sparse — there is no OpenAPI spec, no dedicated docs page, and no usage examples beyond the x402 challenge metadata. The parent platform, Questflow, is primarily an AI clone/agent economy platform focused on onchain trading and prediction markets; this particular endpoint appears to be a demo or showcase agent for front-end UI component generation. The output schema indicates a simple string response, so the exact format and richness of the returned UI blocks is unknown.","tags":[],"capabilities":["x402-payment","ui-generation","hello-world-demo","agent-chat","base-sepolia-usdc"],"categories":["design","llm"],"synonyms":["hello world UI","UI block generator","front-end component demo","neon UI design","gradient UI blocks","Questflow agent","x402 agent","paid AI agent"],"warnings":["Endpoint is on a development domain (api-dev) using Base Sepolia testnet — not production","No OpenAPI specification or documentation available","Response format and content are entirely inferred from minimal outputSchema metadata","No real response examples exist; the example_response_json above is fabricated for illustration","Parent platform Questflow focuses on trading/prediction markets; this agent appears to be a demo"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x11d0bb8CB412AC8C631586539b71798656e97056","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5","description":"A set of Hello World UI blocks, from a minimal centered design to enhanced gradient, animation, and neon‑styled versions. Demonstrates modern UI patterns, visual flair, and interactive effects, useful for showcasing design capabilities and marketing front‑end components. | 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":"500000","maxTimeoutSeconds":1200}]},"qualityScore":"0.200","qualityRationale":"No OpenAPI spec, no docs, no usage examples, and no real response samples are available. The only structured information comes from the x402 challenge metadata. The endpoint is on a dev/testnet domain, and the response format is entirely 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'000':107 '0x036cbd53842c5426634e7929541ec2318f3dcf7e':98 '1':120 '200':121 '500':106 '6':113 'Questflow agent' 'UI block generator' 'accept':63 'agent':4,17,34,82,183 'agent-chat' 'ai':162 'amount':101 'anim':56 'api':40 'appear':176 'base':92 'base-sepolia-usdc' 'beyond':150 'block':9,22,49,209 'center':52 'challeng':153 'clone/agent':163 'compon':189 'contract':97 'decim':114 'dedic':143 'demo':180 'design':10,23,55 'develop':39 'discover':126 'doc':144 'document':133 'economi':164 'end':187 'endpoint':28,124,175 'exact':130,201 'exampl':149 'extrem':135 'field':74 'focus':166 'format':202 'front':186 'front-end':185 'front-end component demo' 'gate':33 'generat':42,190 'given':112 'gradient':54 'gradient UI blocks' 'hello':6,19,46 'hello world UI' 'hello-world-demo' 'host':35 'indic':194 'input':73 'layout':53 'like':109 'market':172 'maximum':100,117 'metadata':154 'minim':51 'neon':59 'neon UI design' 'neon-styl':58 'onchain':168 'openapi':140 'output':192 'page':145 'paid AI agent' 'parent':156 'particular':174 'payabl':3,16 'payment':83,131 'per':103 'platform':157,165 'post':69 'predict':171 'primarili':160 'prompt':66 'protocol':89 'questflow':37,158 'request':70,104 'requir':85,102 'respons':79,198 'return':5,18,76,207 'rich':204 'schema':193 'scheme':132 'second':122 'sepolia':93 'set':44 'showcas':182 'simpl':196 'span':50 'spars':136 'spec':141 'string':78,197 'style':13,26,60 'testnet':94 'text':65 'timeout':118 'trade':169 'ui':8,21,48,188,208 'ui-generation' 'unit':108 'unknown':211 'usag':148 'usdc':96,111 'use':95,128 'various':12,25 'version':61 'via':67,86 'world':7,20,47 'x402':2,15,32,88,152 'x402 agent' 'x402-gated':31 'x402-payable':1,14 'x402-payment'","prices":[{"id":"ef874f25-95d9-4faf-98ee-fdf20bcf9f04","listingId":"f4b0f067-ac49-44fc-8101-9fde7121daf4","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0x11d0bb8CB412AC8C631586539b71798656e97056","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x11d0bb8CB412AC8C631586539b71798656e97056","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5","description":"A set of Hello World UI blocks, from a minimal centered design to enhanced gradient, animation, and neon‑styled versions. Demonstrates modern UI patterns, visual flair, and interactive effects, useful for showcasing design capabilities and marketing front‑end components. | 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":"500000","maxTimeoutSeconds":1200}],"asset_contract":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","max_timeout_seconds":1200},"createdAt":"2026-04-18T18:30:22.806Z"}],"sources":[{"listingId":"f4b0f067-ac49-44fc-8101-9fde7121daf4","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:30:22.806Z","lastSeenAt":"2026-04-22T07:00:11.721Z"}],"details":{"listingId":"f4b0f067-ac49-44fc-8101-9fde7121daf4","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"input\": \"Generate a neon-styled Hello World UI block\"}'","exampleRequest":{"input":"Generate a neon-styled Hello World UI block"},"exampleResponse":{"response":"Here is a neon-styled Hello World UI block: <div style='background: #0a0a0a; border: 2px solid #0ff; box-shadow: 0 0 20px #0ff; padding: 2rem; text-align: center;'><h1 style='color: #0ff; text-shadow: 0 0 10px #0ff;'>Hello World</h1></div>"},"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":"Payment uses Base Sepolia testnet with USDC asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e and maxAmountRequired of 500000","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5"},{"claim":"The endpoint accepts a POST with an 'input' string field and returns a 'response' string field per the outputSchema","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5"},{"claim":"Maximum timeout is 1200 seconds and payment scheme is 'exact'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5"},{"claim":"Questflow is an AI clone/agent economy platform","source_url":"https://api-dev.intra-tls2.dctx.link"}],"useCases":["Generating sample Hello World UI blocks in various visual styles","Demonstrating modern front-end design patterns via an AI agent","Showcasing x402 micropayment-gated agent interactions","Prototyping UI component ideas with gradient, animation, and neon themes"],"bestFor":["Developers exploring x402 payment protocol with a simple demo agent","Front-end designers seeking quick UI block inspiration","Teams evaluating Questflow's agent-as-a-service platform"],"notFor":["Production UI component generation at scale (this is a dev/demo endpoint on testnet)","Users needing free or unauthenticated access to design tools","Complex multi-step design workflows requiring structured output formats"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:38.872Z"},"updatedAt":"2026-04-22T07:00:11.721Z"}}