{"id":"b82bf671-ec9f-4d6d-9026-95856293482c","shortId":"yrWxbB","kind":"x402","title":"x402-payable Questflow swarm agent endpoint on Base Sepolia testnet","tagline":"x402-payable Questflow swarm agent endpoint on Base Sepolia testnet","description":"This is an x402-protocol endpoint hosted by Questflow that exposes a swarm agent behind a pay-per-request paywall using USDC on the Base Sepolia testnet. The endpoint accepts a POST request with a text input message and returns a text response from the agent. Payment is handled via the x402 protocol's X-PAYMENT header, with a maximum cost of 500,000 units of USDC (on Base Sepolia) per request and a timeout of up to 1,200 seconds.\n\nQuestflow is a platform for creating autonomous AI \"clones\" that aggregate onchain markets (Polymarket, Pump.fun, OKX, Opinion Labs, etc.) to discover trading alpha and execute trades. This particular endpoint appears to be a development/test instance (api-dev subdomain, Sepolia testnet) of a Questflow swarm agent. The description provided by the endpoint operator is simply \"ddddddd,\" which suggests this is a placeholder or test deployment rather than a production-ready service.\n\nNo OpenAPI schema, dedicated documentation, or detailed capability descriptions are available. The only structured metadata comes from the x402 challenge response, which defines a simple input/output schema: send a string message, receive a string response. Without further documentation, the exact capabilities and behavior of the underlying swarm agent are unknown.","tags":[],"capabilities":["x402-payment","agent-chat","base-sepolia-usdc","swarm-agent","post-request"],"categories":["llm","crypto","agents"],"synonyms":["questflow agent","x402 agent","pay-per-request AI","onchain AI agent","swarm endpoint","crypto trading agent","questflow swarm"],"warnings":["Endpoint description is a placeholder ('ddddddd'), suggesting a test or incomplete deployment","Running on Base Sepolia testnet — not production mainnet","No OpenAPI spec or documentation available","Dev subdomain (api-dev) indicates this is not a stable production endpoint","Response behavior and agent capabilities are entirely unknown"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x0dedf73d9E5f96f01ab0dFcEEd3A1E435f2cd0f0","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4","description":"ddddddd | 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":"0.200","qualityRationale":"The endpoint has minimal documentation — the description is a placeholder ('ddddddd'), there is no OpenAPI spec, no docs page, and it runs on a testnet dev subdomain. The only structured info comes from the x402 challenge. This is effectively a stub 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'1':104 '200':105 '500':88 'accept':54 'agent':6,17,37,70,152,226 'agent-chat' 'aggreg':117 'ai':114 'alpha':129 'api':143 'api-dev':142 'appear':136 'autonom':113 'avail':189 'base':9,20,49,94 'base-sepolia-usdc' 'behavior':221 'behind':38 'capabl':186,219 'challeng':198 'clone':115 'come':194 'cost':86 'creat':112 'crypto trading agent' 'ddddddd':162 'dedic':182 'defin':201 'deploy':171 'descript':154,187 'detail':185 'dev':144 'development/test':140 'discov':127 'document':183,216 'endpoint':7,18,29,53,135,158 'etc':125 'exact':218 'execut':131 'expos':34 'handl':73 'header':82 'host':30 'input':61 'input/output':204 'instanc':141 'lab':124 'market':119 'maximum':85 'messag':62,209 'metadata':193 'okx':122 'onchain':118 'onchain AI agent' 'openapi':180 'oper':159 'opinion':123 'particular':134 'pay':41 'pay-per-request':40 'pay-per-request AI' 'payabl':3,14 'payment':71,81 'paywal':44 'per':42,96 'placehold':168 'platform':110 'polymarket':120 'post':56 'post-request' 'product':176 'production-readi':175 'protocol':28,77 'provid':155 'pump.fun':121 'questflow':4,15,32,107,150 'questflow agent' 'questflow swarm' 'rather':172 'readi':177 'receiv':210 'request':43,57,97 'respons':67,199,213 'return':64 'schema':181,205 'second':106 'send':206 'sepolia':10,21,50,95,146 'servic':178 'simpl':203 'simpli':161 'string':208,212 'structur':192 'subdomain':145 'suggest':164 'swarm':5,16,36,151,225 'swarm endpoint' 'swarm-agent' 'test':170 'testnet':11,22,51,147 'text':60,66 'timeout':100 'trade':128,132 'under':224 'unit':90 'unknown':228 'usdc':46,92 'use':45 'via':74 'without':214 'x':80 'x-payment':79 'x402':2,13,27,76,197 'x402 agent' 'x402-payable':1,12 'x402-payment' 'x402-protocol':26","prices":[{"id":"2b0f14f0-981f-4882-acba-1cd5262838e3","listingId":"b82bf671-ec9f-4d6d-9026-95856293482c","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0x0dedf73d9E5f96f01ab0dFcEEd3A1E435f2cd0f0","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x0dedf73d9E5f96f01ab0dFcEEd3A1E435f2cd0f0","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4","description":"ddddddd | 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":"2026-04-18T18:30:31.976Z"}],"sources":[{"listingId":"b82bf671-ec9f-4d6d-9026-95856293482c","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:30:31.976Z","lastSeenAt":"2026-04-22T02:30:09.368Z"}],"details":{"listingId":"b82bf671-ec9f-4d6d-9026-95856293482c","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"input\": \"What markets are trending today?\"}'","exampleRequest":{"input":"What markets are trending today?"},"exampleResponse":{"response":"Currently trending markets 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 requires USDC payment on base-sepolia with maxAmountRequired of 500000 and maxTimeoutSeconds of 1200","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4"},{"claim":"Questflow is a platform for creating AI clones that aggregate onchain markets like Polymarket, Pump.fun, OKX, and Opinion Labs","source_url":"https://api-dev.intra-tls2.dctx.link"},{"claim":"The endpoint description from the x402 challenge is 'ddddddd | Powered by Questflow'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4"},{"claim":"Payment is sent to address 0x0dedf73d9E5f96f01ab0dFcEEd3A1E435f2cd0f0 using USDC asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4"}],"useCases":["Sending paid queries to a Questflow swarm agent via x402 protocol","Testing x402 payment flows on Base Sepolia testnet","Integrating autonomous agent responses into agent-to-agent workflows"],"bestFor":["Developers experimenting with x402 payment protocol on testnet","Agent-to-agent communication with pay-per-request billing","Exploring Questflow's swarm agent capabilities"],"notFor":["Production workloads (this is a dev/testnet endpoint)","Users needing well-documented, stable APIs","Anyone expecting free or non-crypto payment options"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:33.007Z"},"updatedAt":"2026-04-22T02:30:09.368Z"}}