{"id":"afd7111f-273c-4627-afe6-8dd2978ac5eb","shortId":"d49T83","kind":"x402","title":"Chat with a Web3 trading agent via x402 micropayment on Base Sepolia","tagline":"Chat with a Web3 trading agent via x402 micropayment on Base Sepolia","description":"Web3 Trader is an x402-payable AI agent endpoint hosted by Questflow. It accepts a text message and returns a response from a Web3-focused trading agent. Payment is handled via the x402 protocol on the Base Sepolia testnet using USDC (asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e), with a maximum charge of 0.5 USDC per request.\n\nThe endpoint is a simple POST interface: you send a JSON body with an \"input\" string field containing your message, and receive a JSON response with a \"response\" string field. The agent is part of Questflow's broader platform, which aggregates onchain markets (Polymarket, Pump.fun, OKX, Opinion Labs) and provides AI-driven trading clones that scan markets, detect patterns, and execute trades. However, the specific capabilities exposed through this single endpoint are limited to conversational interaction — the probe material does not document what trading actions, if any, the agent can execute on your behalf through this API.\n\nNo OpenAPI spec, dedicated docs, or pricing page was found for this endpoint. The x402 challenge is the primary source of schema information. The endpoint runs on a development/staging domain (api-dev), suggesting it may not be production-stable. The maximum timeout of 1200 seconds (20 minutes) indicates responses may involve longer-running agent workflows.","tags":[],"capabilities":["x402-payment","web3-trading-agent","conversational-ai","base-sepolia-usdc","onchain-market-aggregation"],"categories":["crypto","llm","trading"],"synonyms":["Questflow Web3 agent","crypto trading chatbot","x402 trading endpoint","onchain trading AI","Web3 AI agent","prediction market agent","DeFi trading bot"],"warnings":["Endpoint is on a development domain (api-dev), suggesting it may not be production-ready","Uses Base Sepolia testnet USDC — not real funds, likely for testing only","No API documentation found; /docs, /api, /pricing, /README all return 404","Response format and agent capabilities are inferred from minimal schema in x402 challenge","maxTimeoutSeconds is 1200 (20 minutes), indicating potentially very slow responses"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xF67A70744CcA9727D9585B3Db13CD747424021f5","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7","description":"Web3 Trader | 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":"0.300","qualityRationale":"No OpenAPI spec, no dedicated documentation, no examples beyond the x402 challenge schema. The endpoint is on a dev/staging domain. The response example is entirely inferred. Only the x402 challenge provides structural information about the 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'0x036cbd53842c5426634e7929541ec2318f3dcf7e':69 '1200':222 '20':224 'DeFi trading bot' 'Questflow Web3 agent' 'Web3 AI agent' 'accept':39 'action':164 'agent':6,18,33,53,110,168,233 'aggreg':119 'ai':32,130 'ai-driven':129 'api':176,208 'api-dev':207 'asset':68 'base':11,23,63 'base-sepolia-usdc' 'behalf':173 'bodi':90 'broader':116 'capabl':145 'challeng':192 'charg':73 'chat':1,13 'clone':133 'contain':96 'convers':154 'conversational-ai' 'crypto trading chatbot' 'dedic':180 'detect':137 'dev':209 'development/staging':205 'doc':181 'document':161 'domain':206 'driven':131 'endpoint':34,80,150,189,201 'execut':140,170 'expos':146 'field':95,108 'focus':51 'found':186 'handl':56 'host':35 'howev':142 'indic':226 'inform':199 'input':93 'interact':155 'interfac':85 'involv':229 'json':89,102 'lab':126 'limit':152 'longer':231 'longer-run':230 'market':121,136 'materi':158 'maximum':72,219 'may':212,228 'messag':42,98 'micropay':9,21 'minut':225 'okx':124 'onchain':120 'onchain trading AI' 'onchain-market-aggregation' 'openapi':178 'opinion':125 'page':184 'part':112 'pattern':138 'payabl':31 'payment':54 'per':77 'platform':117 'polymarket':122 'post':84 'prediction market agent' 'price':183 'primari':195 'probe':157 'product':216 'production-st':215 'protocol':60 'provid':128 'pump.fun':123 'questflow':37,114 'receiv':100 'request':78 'respons':46,103,106,227 'return':44 'run':202,232 'scan':135 'schema':198 'second':223 'send':87 'sepolia':12,24,64 'simpl':83 'singl':149 'sourc':196 'spec':179 'specif':144 'stabl':217 'string':94,107 'suggest':210 'testnet':65 'text':41 'timeout':220 'trade':5,17,52,132,141,163 'trader':26 'usdc':67,76 'use':66 'via':7,19,57 'web3':4,16,25,50 'web3-focused':49 'web3-trading-agent' 'workflow':234 'x402':8,20,30,59,191 'x402 trading endpoint' 'x402-payable':29 'x402-payment'","prices":[{"id":"979d2b8a-c867-45a8-9229-11c45a0f0c30","listingId":"afd7111f-273c-4627-afe6-8dd2978ac5eb","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0xF67A70744CcA9727D9585B3Db13CD747424021f5","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xF67A70744CcA9727D9585B3Db13CD747424021f5","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7","description":"Web3 Trader | 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":"2026-04-18T18:30:39.899Z"}],"sources":[{"listingId":"afd7111f-273c-4627-afe6-8dd2978ac5eb","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:30:39.899Z","lastSeenAt":"2026-04-22T02:30:09.721Z"}],"details":{"listingId":"afd7111f-273c-4627-afe6-8dd2978ac5eb","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"input\": \"What are the top prediction market opportunities right now?\"}'","exampleRequest":{"input":"What are the top prediction market opportunities right now?"},"exampleResponse":{"response":"Based on current Polymarket data, the top opportunities include..."},"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 USDC on Base Sepolia with maxAmountRequired of 500000 (0.5 USDC)","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7"},{"claim":"The endpoint accepts a POST with an 'input' string field and returns a 'response' string field","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7"},{"claim":"Questflow aggregates Polymarket, Pump.fun, OKX, and Opinion Labs markets","source_url":"https://api-dev.intra-tls2.dctx.link"},{"claim":"maxTimeoutSeconds is 1200","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7"},{"claim":"Description in x402 challenge is 'Web3 Trader | Powered by Questflow'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a31888e91d0ba6c976f7"}],"useCases":["Querying an AI agent for Web3 market insights via micropayment","Integrating an autonomous trading agent into an agent-to-agent workflow","Asking for analysis on prediction markets, meme coins, or token launches"],"bestFor":["Developers experimenting with x402 payment protocol on Base Sepolia","Agent-to-agent workflows needing a Web3-knowledgeable conversational endpoint","Prototyping pay-per-query trading assistant integrations"],"notFor":["Production trading with real funds (this uses Base Sepolia testnet)","Users needing detailed API documentation or guaranteed uptime","Bulk data retrieval or structured market data feeds"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:28.33Z"},"updatedAt":"2026-04-22T02:30:09.721Z"}}