{"id":"fc1b30a3-1a66-421c-a146-98e38a615be0","shortId":"FV8yvw","kind":"x402","title":"x402-payable research agent that answers queries via a simple POST interface on Base Sepolia","tagline":"x402-payable research agent that answers queries via a simple POST interface on Base Sepolia","description":"The Researcher endpoint is an x402-enabled AI agent hosted by Questflow. It accepts a text prompt via HTTP POST and returns a text response from the agent. Payment is handled through the x402 protocol using USDC on the Base Sepolia testnet, with a maximum cost of 0.5 USDC per request and a timeout of up to 1200 seconds.\n\nThe endpoint exposes a minimal interface: 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 described simply as \"Researcher,\" and no further documentation is available about what specific research capabilities it offers — whether it performs web search, on-chain data analysis, or general knowledge Q&A. Questflow's broader platform focuses on AI \"Clones\" that aggregate on-chain markets (Polymarket, Pump.fun, OKX, etc.) for autonomous trading and alpha discovery, but it is unclear how much of that functionality is exposed through this particular endpoint.\n\nBecause the endpoint is on a development subdomain (api-dev) and uses a testnet (Base Sepolia), this appears to be a pre-production or demo deployment. No OpenAPI spec, dedicated documentation, or usage examples are published. Callers should treat this as experimental.","tags":[],"capabilities":["x402-payment","text-in-text-out","ai-agent","research-query","base-sepolia-usdc"],"categories":["llm","agent"],"synonyms":["questflow researcher","ai research agent","x402 agent","paid ai query","questflow swarm","research chatbot","on-chain ai agent"],"warnings":["Endpoint is on a development subdomain (api-dev) and uses Base Sepolia testnet — not production-ready","No documentation, OpenAPI spec, or usage examples are published","The agent's specific research capabilities and data sources are completely undocumented","maxTimeoutSeconds is 1200 (20 minutes), suggesting potentially very long response times"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xf1CfB831Fc97a6F744FFF73ae285b66161819c75","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086","description":"Researcher | 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":"0.400","qualityRationale":"The endpoint is live (402 challenge confirmed) with a clear outputSchema defining input/output fields, but there is no OpenAPI spec, no dedicated documentation, no usage examples, and the agent's actual research capabilities are undocumented. The dev subdomain and testnet payment suggest pre-production 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'1200':91 'accept':47 'agent':5,21,42,61,122 'aggreg':165 'ai':41,162 'ai research agent' 'ai-agent' 'alpha':178 'analysi':150 'answer':7,23 'api':204 'api-dev':203 'appear':213 'autonom':175 'avail':133 'base':15,31,73,210 'base-sepolia-usdc' 'bodi':102 'broader':158 'caller':233 'capabl':138 'chain':148,168 'clone':163 'contain':108 'cost':79 'data':149 'dedic':226 'demo':221 'deploy':222 'describ':124 'dev':205 'develop':201 'discoveri':179 'document':131,227 'enabl':40 'endpoint':35,94,194,197 'etc':173 'exampl':230 'experiment':238 'expos':95,190 'field':107,120 'focus':160 'function':188 'general':152 'handl':64 'host':43 'http':52 'input':105 'interfac':13,29,98 'json':101,114 'knowledg':153 'market':169 'maximum':78 'messag':110 'minim':97 'much':185 'offer':140 'okx':172 'on-chain':146,166 'on-chain ai agent' 'openapi':224 'paid ai query' 'particular':193 'payabl':3,19 'payment':62 'per':83 'perform':143 'platform':159 'polymarket':170 'post':12,28,53 'pre':218 'pre-product':217 'product':219 'prompt':50 'protocol':68 'publish':232 'pump.fun':171 'q':154 'queri':8,24 'questflow':45,156 'questflow researcher' 'questflow swarm' 'receiv':112 'request':84 'research':4,20,34,127,137 'research chatbot' 'research-query' 'respons':58,115,118 'return':55 'search':145 'second':92 'send':99 'sepolia':16,32,74,211 'simpl':11,27 'simpli':125 'spec':225 'specif':136 'string':106,119 'subdomain':202 'testnet':75,209 'text':49,57 'text-in-text-out' 'timeout':87 'trade':176 'treat':235 'unclear':183 'usag':229 'usdc':70,82 'use':69,207 'via':9,25,51 'web':144 'whether':141 'x402':2,18,39,67 'x402 agent' 'x402-enabled':38 'x402-payable':1,17 'x402-payment'","prices":[{"id":"9f51a171-5b50-4c0f-a0e7-ad6434e8aa46","listingId":"fc1b30a3-1a66-421c-a146-98e38a615be0","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0xf1CfB831Fc97a6F744FFF73ae285b66161819c75","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xf1CfB831Fc97a6F744FFF73ae285b66161819c75","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086","description":"Researcher | 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":"2026-04-18T18:31:18.505Z"}],"sources":[{"listingId":"fc1b30a3-1a66-421c-a146-98e38a615be0","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:18.505Z","lastSeenAt":"2026-04-22T02:30:11.363Z"}],"details":{"listingId":"fc1b30a3-1a66-421c-a146-98e38a615be0","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"input\": \"What are the latest trends in DeFi lending?\"}'","exampleRequest":{"input":"What are the latest trends in DeFi lending?"},"exampleResponse":{"response":"Recent trends in DeFi lending include the rise of modular lending protocols, real-world asset (RWA) collateralization, and cross-chain lending markets..."},"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 500000","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086"},{"claim":"The outputSchema specifies a POST method with an 'input' string body field and a 'response' string output field","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086"},{"claim":"Questflow's platform focuses on AI Clones that aggregate on-chain markets including Polymarket, Pump.fun, OKX, and Opinion Labs","source_url":"https://api-dev.intra-tls2.dctx.link"},{"claim":"The endpoint description in the x402 challenge is 'Researcher | Powered by Questflow'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086"}],"useCases":["Sending research questions to an AI agent and receiving text answers","Integrating a pay-per-query research agent into an autonomous agent pipeline","Testing x402 payment flows with a live agent endpoint on Base Sepolia"],"bestFor":["Developers experimenting with x402 payment protocol","Agent-to-agent workflows needing a research sub-agent","Prototyping pay-per-call AI services on testnet"],"notFor":["Production workloads requiring guaranteed SLAs (this is a dev/testnet endpoint)","Users needing detailed provenance or citations in research output","High-throughput batch processing (1200s max timeout per request)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:11.754Z"},"updatedAt":"2026-04-22T02:30:11.363Z"}}