{"id":"2311c49e-8038-41ee-a889-5d7f6f1adb48","shortId":"wczBmm","kind":"x402","title":"Pay-per-message Web3 trading agent via x402 on Base Sepolia testnet","tagline":"Pay-per-message Web3 trading agent via x402 on Base Sepolia testnet","description":"Web3 Trader is an x402-payable AI agent endpoint hosted by Questflow. It accepts a text prompt and returns a response from a Web3-focused trading agent. The endpoint uses the x402 payment protocol on the Base Sepolia testnet, accepting USDC payments (up to 0.5 USDC per request based on the maxAmountRequired of 500000 in 6-decimal USDC units). The agent is part of Questflow's \"swarm\" infrastructure, identified by a QRN (Questflow Resource Name).\n\nBased on the parent platform's description, Questflow builds AI \"Clones\" that aggregate onchain markets such as Polymarket, Pump.fun, OKX, and Opinion Labs for discovering trading opportunities and executing trades. However, the specific capabilities of this particular Web3 Trader agent endpoint are not documented beyond the x402 challenge metadata. The endpoint accepts a POST request with a JSON body containing an \"input\" string field (your message to the agent) and returns a JSON response with a \"response\" string field.\n\nImportant caveats: This endpoint runs on Base Sepolia, which is a testnet — meaning payments use testnet USDC, not real funds. There is no OpenAPI spec, no dedicated documentation page, and no usage examples beyond what can be inferred from the x402 challenge's outputSchema. The maximum timeout of 1200 seconds (20 minutes) suggests the agent may perform complex or long-running operations before responding.","tags":[],"capabilities":["x402-payment","web3-trading-agent","text-in-text-out","base-sepolia-testnet","usdc-payment","autonomous-agent","onchain-market-aggregation"],"categories":["crypto","agent","trading"],"synonyms":["web3 trading bot","crypto AI agent","onchain trading assistant","Questflow swarm agent","x402 crypto agent","prediction market agent","DeFi trading agent"],"warnings":["Endpoint is on Base Sepolia testnet — payments use testnet USDC, not real funds","No API documentation available (all doc routes return 404)","No OpenAPI or AI plugin manifest found","Agent behavior and response quality are unknown — no examples or guarantees provided","maxTimeoutSeconds is 1200 (20 minutes), indicating potentially very slow responses","The example response JSON is entirely fabricated for illustration; actual responses are undocumented"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f1de319c162996ee728674","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x4182d4E3F57Bb78916552977A8eE1d5541fD684b","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f1de319c162996ee728674","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":"0.250","qualityRationale":"No OpenAPI spec, no documentation pages (all return 404), no usage examples, and the endpoint is on a testnet. The only structured information comes from the x402 challenge metadata, which provides a minimal input/output schema. Significant inference is required for most listing 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'1200':231 '20':233 '500000':82 '6':84 'DeFi trading agent' 'Questflow swarm agent' 'accept':41,68,155 'agent':7,20,35,55,89,143,172,237 'aggreg':116 'ai':34,113 'autonomous-agent' 'base':11,24,65,77,104,189 'base-sepolia-testnet' 'beyond':148,216 'bodi':162 'build':112 'capabl':137 'caveat':184 'challeng':151,224 'clone':114 'complex':240 'contain':163 'crypto AI agent' 'decim':85 'dedic':209 'descript':110 'discov':128 'document':147,210 'endpoint':36,57,144,154,186 'exampl':215 'execut':132 'field':167,182 'focus':53 'fund':202 'host':37 'howev':134 'identifi':97 'import':183 'infer':220 'infrastructur':96 'input':165 'json':161,176 'lab':126 'long':243 'long-run':242 'market':118 'maxamountrequir':80 'maximum':228 'may':238 'mean':195 'messag':4,17,169 'metadata':152 'minut':234 'name':103 'okx':123 'onchain':117 'onchain trading assistant' 'onchain-market-aggregation' 'openapi':206 'oper':245 'opinion':125 'opportun':130 'outputschema':226 'page':211 'parent':107 'part':91 'particular':140 'pay':2,15 'pay-per-messag':1,14 'payabl':33 'payment':61,70,196 'per':3,16,75 'perform':239 'platform':108 'polymarket':121 'post':157 'prediction market agent' 'prompt':44 'protocol':62 'pump.fun':122 'qrn':100 'questflow':39,93,101,111 'real':201 'request':76,158 'resourc':102 'respond':247 'respons':48,177,180 'return':46,174 'run':187,244 'second':232 'sepolia':12,25,66,190 'spec':207 'specif':136 'string':166,181 'suggest':235 'swarm':95 'testnet':13,26,67,194,198 'text':43 'text-in-text-out' 'timeout':229 'trade':6,19,54,129,133 'trader':28,142 'unit':87 'usag':214 'usdc':69,74,86,199 'usdc-payment' 'use':58,197 'via':8,21 'web3':5,18,27,52,141 'web3 trading bot' 'web3-focused':51 'web3-trading-agent' 'x402':9,22,32,60,150,223 'x402 crypto agent' 'x402-payable':31 'x402-payment'","prices":[{"id":"a7ad79b9-a51e-48cb-b818-4e00174afb7b","listingId":"2311c49e-8038-41ee-a889-5d7f6f1adb48","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0x4182d4E3F57Bb78916552977A8eE1d5541fD684b","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x4182d4E3F57Bb78916552977A8eE1d5541fD684b","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f1de319c162996ee728674","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":"2026-04-18T06:06:23.576Z"}],"sources":[{"listingId":"2311c49e-8038-41ee-a889-5d7f6f1adb48","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f1de319c162996ee728674","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T06:06:23.576Z","lastSeenAt":"2026-04-22T02:30:07.790Z"}],"details":{"listingId":"2311c49e-8038-41ee-a889-5d7f6f1adb48","quickStartSnippet":"curl -X POST \\\n  https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f1de319c162996ee728674 \\\n  -H 'Content-Type: application/json' \\\n  -H 'X-PAYMENT: <x402-payment-header>' \\\n  -d '{\"input\": \"What are the top trending prediction markets on Polymarket right now?\"}'","exampleRequest":{"input":"What are the top trending prediction markets on Polymarket right now?"},"exampleResponse":{"response":"Here are the top trending prediction markets on Polymarket..."},"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 challenge requires USDC payment on base-sepolia with maxAmountRequired of 500000","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f1de319c162996ee728674"},{"claim":"Endpoint accepts POST with 'input' string field and returns 'response' string field per outputSchema","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f1de319c162996ee728674"},{"claim":"Questflow aggregates Polymarket, Pump.fun, Opinion Labs, OKX and other onchain 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:68f1de319c162996ee728674"},{"claim":"Payment address is 0x4182d4E3F57Bb78916552977A8eE1d5541fD684b","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f1de319c162996ee728674"}],"useCases":["Querying an AI agent about Web3 trading opportunities across aggregated onchain markets","Getting AI-generated trading signals or market analysis via a pay-per-message interface","Integrating an autonomous Web3 trading agent into an agent-to-agent workflow using x402 payments"],"bestFor":["Developers experimenting with x402 payment protocol for AI agent access","Testing pay-per-query Web3 trading agents on a testnet","Agent-to-agent commerce workflows involving crypto market intelligence"],"notFor":["Production trading with real funds (this is on Base Sepolia testnet)","Users needing detailed API documentation or guaranteed response schemas","High-frequency or low-latency trading (max timeout is 1200 seconds)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:50.832Z"},"updatedAt":"2026-04-22T02:30:07.790Z"}}