{"id":"9830f98b-3b0d-4ac3-a228-ebaa35681170","shortId":"HwrbQ3","kind":"x402","title":"Pay-per-call Web3 trading agent via x402 on Base Sepolia, powered by Questflow","tagline":"Pay-per-call Web3 trading agent via x402 on Base Sepolia, powered by Questflow","description":"Web3 Trader is an x402-payable AI agent endpoint hosted by Questflow that accepts a text prompt and returns a response related to Web3 trading. The endpoint uses the x402 payment protocol on the Base Sepolia testnet, accepting USDC payments with a maximum amount of 500,000 units (likely 0.50 USDC given 6-decimal USDC). You send a POST request with an `input` string field and receive a `response` string from the agent.\n\nThe parent platform, Questflow, positions itself as an AI agent economy for onchain markets — aggregating prediction markets (Polymarket, Opinion Labs), meme coin platforms (Pump.fun), and exchanges (OKX) into autonomous trading clones. However, the specific capabilities of this particular \"Web3 Trader\" agent are not documented beyond the minimal x402 challenge schema. There is no OpenAPI spec, no dedicated docs page, and no usage examples available from the provider.\n\nBecause this endpoint runs on Base Sepolia (a testnet), it is likely intended for development and experimentation rather than production trading with real funds. The timeout of 1200 seconds suggests the agent may perform non-trivial processing or multi-step reasoning before returning a response.","tags":[],"capabilities":["x402-payment","web3-trading-agent","base-sepolia-testnet","usdc-payment","text-in-text-out","autonomous-agent"],"categories":["crypto","llm","trading"],"synonyms":["web3 trading bot","crypto AI agent","onchain trading assistant","Questflow agent","x402 crypto agent","prediction market bot","DeFi trading agent"],"warnings":["No OpenAPI spec or documentation available at /docs, /api, or /README","Runs on Base Sepolia testnet — not suitable for production use with real funds","Response format and agent capabilities are undocumented beyond a single 'response' string field","Example response is fabricated for illustration; actual output is unknown","The maxAmountRequired of 500000 units is ambiguous — likely 0.50 USDC but unconfirmed"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x36F3D849DfEA85bABc70df73045B8728BE31be5A","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a","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":"Only the x402 challenge metadata is available — no OpenAPI spec, no docs, no usage examples, and no real response samples. The endpoint is on a testnet. Almost everything beyond the payment schema is 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'000':78 '1200':199 '500':77 '6':84 'DeFi trading agent' 'Questflow agent' 'accept':45,69 'agent':7,22,39,104,114,145,203 'aggreg':119 'ai':38,113 'amount':75 'autonom':133 'autonomous-agent' 'avail':168 'base':11,26,66,177 'base-sepolia-testnet' 'beyond':149 'call':4,19 'capabl':139 'challeng':153 'clone':135 'coin':126 'crypto AI agent' 'decim':85 'dedic':161 'develop':186 'doc':162 'document':148 'economi':115 'endpoint':40,58,174 'exampl':167 'exchang':130 'experiment':188 'field':96 'fund':195 'given':83 'host':41 'howev':136 'input':94 'intend':184 'lab':124 'like':80,183 'market':118,121 'maximum':74 'may':204 'meme':125 'minim':151 'multi':212 'multi-step':211 'non':207 'non-trivi':206 'okx':131 'onchain':117 'onchain trading assistant' 'openapi':158 'opinion':123 'page':163 'parent':106 'particular':142 'pay':2,17 'pay-per-cal':1,16 'payabl':37 'payment':62,71 'per':3,18 'perform':205 'platform':107,127 'polymarket':122 'posit':109 'post':90 'power':13,28 'predict':120 'prediction market bot' 'process':209 'product':191 'prompt':48 'protocol':63 'provid':171 'pump.fun':128 'questflow':15,30,43,108 'rather':189 'real':194 'reason':214 'receiv':98 'relat':53 'request':91 'respons':52,100,218 'return':50,216 'run':175 'schema':154 'second':200 'send':88 'sepolia':12,27,67,178 'spec':159 'specif':138 'step':213 'string':95,101 'suggest':201 'testnet':68,180 'text':47 'text-in-text-out' 'timeout':197 'trade':6,21,56,134,192 'trader':32,144 'trivial':208 'unit':79 'usag':166 'usdc':70,82,86 'usdc-payment' 'use':59 'via':8,23 'web3':5,20,31,55,143 'web3 trading bot' 'web3-trading-agent' 'x402':9,24,36,61,152 'x402 crypto agent' 'x402-payable':35 'x402-payment'","prices":[{"id":"441ffad4-750a-4dbd-bf0b-bee1690b4ef5","listingId":"9830f98b-3b0d-4ac3-a228-ebaa35681170","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0x36F3D849DfEA85bABc70df73045B8728BE31be5A","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x36F3D849DfEA85bABc70df73045B8728BE31be5A","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a","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":"2026-04-18T18:30:40.527Z"}],"sources":[{"listingId":"9830f98b-3b0d-4ac3-a228-ebaa35681170","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:30:40.527Z","lastSeenAt":"2026-04-22T02:30:09.759Z"}],"details":{"listingId":"9830f98b-3b0d-4ac3-a228-ebaa35681170","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a \\\n  -H 'Content-Type: application/json' \\\n  -H 'X-PAYMENT: <x402_payment_token>' \\\n  -d '{\"input\": \"What are the top trending tokens on Pump.fun today?\"}'","exampleRequest":{"input":"What are the top trending tokens on Pump.fun today?"},"exampleResponse":{"response":"Based on current on-chain data, the top trending tokens on Pump.fun 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":"x402 challenge returns version 1, network base-sepolia, asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e (USDC), maxAmountRequired 500000","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a"},{"claim":"Description in x402 challenge is 'Web3 Trader | Powered by Questflow'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a"},{"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 for this endpoint","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a"}],"useCases":["Querying an AI agent for Web3 trading insights or market analysis","Programmatic agent-to-agent interaction for crypto market signals","Testing x402 payment-gated AI agent workflows on Base Sepolia"],"bestFor":["Developers experimenting with x402 payment protocol for AI agents","Exploring pay-per-call crypto trading assistants on testnet","Agent-to-agent commerce prototyping in the Web3 space"],"notFor":["Production trading with real funds (this is on Base Sepolia testnet)","Users needing detailed API documentation or guaranteed response schemas","Non-crypto or general-purpose LLM chat"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:26.526Z"},"updatedAt":"2026-04-22T02:30:09.759Z"}}