{"id":"9bf2b3de-2c31-4c04-a24c-b62351ed12d4","shortId":"kwm6cJ","kind":"x402","title":"Pay-per-call AI research agent via x402 on Base Sepolia, powered by Questflow","tagline":"Pay-per-call AI research agent via x402 on Base Sepolia, powered by Questflow","description":"Researcher is an x402-payable AI agent endpoint hosted by Questflow. It accepts a text prompt via HTTP POST and returns a text response from an AI research agent. Payment is handled through the x402 protocol using USDC on the Base Sepolia testnet, with a maximum cost of 0.50 USDC per request and a timeout of up to 1200 seconds.\n\nThe endpoint is part of Questflow's broader \"AI Clone\" platform, which aggregates onchain markets (Polymarket, Pump.fun, OKX, Opinion Labs) and provides autonomous agent capabilities for trading, research, and signal generation. However, the specific capabilities of this \"Researcher\" agent beyond accepting a free-text input and returning a string response are not documented. There is no OpenAPI spec, no dedicated docs page, and no detailed description of what research domains or data sources the agent covers.\n\nBecause this endpoint is on a development subdomain (api-dev) and uses a testnet (Base Sepolia), it is likely a staging or preview deployment rather than a production service. Callers should expect potential instability and treat the USDC cost as testnet tokens with no real monetary value.","tags":[],"capabilities":["x402-payment","ai-agent","text-generation","research-agent","base-sepolia","usdc-payment","http-post"],"categories":["llm","crypto"],"synonyms":["Questflow researcher","AI research agent","x402 agent","pay-per-query AI","onchain AI agent","crypto research bot","Questflow swarm"],"warnings":["Endpoint is on a development subdomain (api-dev) and uses Base Sepolia testnet — not production","No OpenAPI spec or documentation available; /docs returns 404","The 'Researcher' agent's specific capabilities, data sources, and research domains are undocumented","Response example is inferred from the outputSchema; actual responses may differ","maxAmountRequired of 500000 is in USDC minor units (0.50 USDC) on testnet — no real monetary value"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a3df58169e9431c148f0","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xD774E78Fe58112E8eFF9504747be84132D45DfC8","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a3df58169e9431c148f0","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":"0.250","qualityRationale":"No OpenAPI spec, no documentation pages, no usage examples, and the endpoint is on a dev/testnet domain. The only structured information comes from the x402 challenge payload, which provides a minimal input/output schema. The response example is entirely 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'protocol':67 'provid':113 'pump.fun':108 'questflow':15,30,42,97 'rather':194 'real':214 'request':83 'research':6,21,31,59,119,129,161 'research-agent' 'respons':55,142 'return':52,139 'second':91 'sepolia':12,27,73,185 'servic':198 'signal':121 'sourc':165 'spec':150 'specif':125 'stage':190 'string':141 'subdomain':176 'testnet':74,183,210 'text':46,54,136 'text-generation' 'timeout':86 'token':211 'trade':118 'treat':205 'usdc':69,81,207 'usdc-payment' 'use':68,181 'valu':216 'via':8,23,48 'x402':9,24,35,66 'x402 agent' 'x402-payable':34 'x402-payment'","prices":[{"id":"b3b7b0fe-b1ed-4e1f-ac93-b3250f015e11","listingId":"9bf2b3de-2c31-4c04-a24c-b62351ed12d4","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0xD774E78Fe58112E8eFF9504747be84132D45DfC8","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xD774E78Fe58112E8eFF9504747be84132D45DfC8","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a3df58169e9431c148f0","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":"2026-04-18T06:06:23.576Z"}],"sources":[{"listingId":"9bf2b3de-2c31-4c04-a24c-b62351ed12d4","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a3df58169e9431c148f0","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T06:06:23.576Z","lastSeenAt":"2026-04-22T09:00:17.966Z"}],"details":{"listingId":"9bf2b3de-2c31-4c04-a24c-b62351ed12d4","quickStartSnippet":"curl -X POST \\\n  https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a3df58169e9431c148f0 \\\n  -H 'Content-Type: application/json' \\\n  -H 'X-PAYMENT: <x402_payment_header>' \\\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 real-world asset (RWA) collateralization, modular lending protocols, and cross-chain liquidity aggregation..."},"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 and maxTimeoutSeconds of 1200","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a3df58169e9431c148f0"},{"claim":"The endpoint accepts a POST with a string 'input' field and returns a string 'response' field","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a3df58169e9431c148f0"},{"claim":"Questflow aggregates Polymarket, Pump.fun, OKX, and Opinion Labs markets","source_url":"https://api-dev.intra-tls2.dctx.link"},{"claim":"Description from x402 challenge: 'Researcher | Powered by Questflow'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8a3df58169e9431c148f0"}],"useCases":["Sending research questions to an AI agent and receiving text answers","Integrating a pay-per-call research agent into an autonomous agent workflow","Testing x402 payment flows with an AI agent on Base Sepolia testnet"],"bestFor":["Developers experimenting with x402 payment protocol","Agent-to-agent research queries in crypto/onchain contexts","Prototyping pay-per-use AI agent integrations on testnet"],"notFor":["Production workloads requiring high reliability or SLAs","Users needing detailed, documented research methodologies or source citations from the agent","Anyone expecting to use real funds (this is on Base Sepolia testnet)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:51.662Z"},"updatedAt":"2026-04-22T09:00:17.966Z"}}