{"id":"3767f416-5688-4c3f-bbb3-1f04001b8cc7","shortId":"XYFCyJ","kind":"x402","title":"Pay-per-message AI agent endpoint on Questflow's swarm network via x402 micropayments","tagline":"Pay-per-message AI agent endpoint on Questflow's swarm network via x402 micropayments","description":"This x402-enabled endpoint exposes a Questflow \"swarm\" agent that accepts a text message and returns a text response, paid per-request with USDC on Base Sepolia. The endpoint follows the x402 payment protocol: callers must include an X-PAYMENT header with a valid payment proof. Each request costs up to 0.50 USDC (500000 units of the USDC contract at 0x036CbD53842c5426634e7929541eC2318f3dCF7e on base-sepolia). The agent accepts a POST body with a single required field \"input\" (string) and returns a JSON object containing a \"response\" (string).\n\nQuestflow is a platform for creating autonomous AI \"clones\" that aggregate onchain markets (Polymarket, Pump.fun, OKX, Opinion Labs) for trading, signal generation, and revenue earning. This particular endpoint is labeled \"Personal use\" and appears to be a development/testnet deployment (api-dev subdomain, Base Sepolia testnet). No OpenAPI spec, dedicated docs, or pricing page was found beyond the x402 challenge metadata. The maximum timeout per request is 1200 seconds (20 minutes), suggesting the agent may perform non-trivial processing before responding.\n\nBecause this is a dev-environment endpoint on a testnet, it should be treated as experimental. There is no documentation beyond the x402 challenge schema and the Questflow marketing site. The actual capabilities of the underlying agent are unspecified — it could be a general-purpose chat agent or a market-focused assistant.","tags":[],"capabilities":["x402-payment","text-chat-agent","base-sepolia-usdc","questflow-swarm","post-json","pay-per-request"],"categories":["llm","crypto","agents"],"synonyms":["questflow agent","x402 chat agent","paid AI agent","swarm agent","questflow swarm","micropayment AI","onchain AI agent","USDC pay-per-message"],"warnings":["Development/testnet endpoint (api-dev subdomain, Base Sepolia) — not suitable for production use","No OpenAPI spec or API documentation found; /docs, /api, /pricing, /README all return 404","Example response is inferred/fabricated — no actual response was captured during probing","Agent capabilities and behavior are unspecified beyond accepting a string input and returning a string response","Maximum timeout of 1200 seconds suggests potentially very long response times"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f6fe81e5045b65fa7766cf","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x901F67814E408A152B931255308B7EcBe63cb867","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f6fe81e5045b65fa7766cf","description":"Personal use | 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":"0.300","qualityRationale":"No OpenAPI spec, no dedicated documentation, no examples beyond the x402 challenge metadata. The endpoint is on a dev subdomain using a testnet. The only schema information comes from the x402 challenge's outputSchema. The example response is entirely fabricated for illustration since no real response was 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'0x036cbd53842c5426634e7929541ec2318f3dcf7e':94 '1200':188 '20':190 '500000':87 'USDC pay-per-message' 'accept':42,101 'actual':235 'agent':6,21,40,100,194,240,251 'aggreg':131 'ai':5,20,128 'api':161 'api-dev':160 'appear':154 'assist':257 'autonom':127 'base':58,97,164 'base-sepolia':96 'base-sepolia-usdc' 'beyond':177,224 'bodi':104 'caller':67 'capabl':236 'challeng':180,227 'chat':250 'clone':129 'contain':117 'contract':92 'cost':82 'could':244 'creat':126 'dedic':170 'deploy':159 'dev':162,208 'dev-environ':207 'development/testnet':158 'doc':171 'document':223 'earn':145 'enabl':34 'endpoint':7,22,35,61,148,210 'environ':209 'experiment':219 'expos':36 'field':109 'focus':256 'follow':62 'found':176 'general':248 'general-purpos':247 'generat':142 'header':74 'includ':69 'input':110 'json':115 'lab':138 'label':150 'market':133,232,255 'market-focus':254 'maximum':183 'may':195 'messag':4,19,45 'metadata':181 'micropay':15,30 'micropayment AI' 'minut':191 'must':68 'network':12,27 'non':198 'non-trivi':197 'object':116 'okx':136 'onchain':132 'onchain AI agent' 'openapi':168 'opinion':137 'page':174 'paid':51 'paid AI agent' 'particular':147 'pay':2,17 'pay-per-messag':1,16 'pay-per-request' 'payment':65,73,78 'per':3,18,53,185 'per-request':52 'perform':196 'person':151 'platform':124 'polymarket':134 'post':103 'post-json' 'price':173 'process':200 'proof':79 'protocol':66 'pump.fun':135 'purpos':249 'questflow':9,24,38,121,231 'questflow agent' 'questflow swarm' 'questflow-swarm' 'request':54,81,186 'requir':108 'respond':202 'respons':50,119 'return':47,113 'revenu':144 'schema':228 'second':189 'sepolia':59,98,165 'signal':141 'singl':107 'site':233 'spec':169 'string':111,120 'subdomain':163 'suggest':192 'swarm':11,26,39 'swarm agent' 'testnet':166,213 'text':44,49 'text-chat-agent' 'timeout':184 'trade':140 'treat':217 'trivial':199 'under':239 'unit':88 'unspecifi':242 'usdc':56,86,91 'use':152 'valid':77 'via':13,28 'x':72 'x-payment':71 'x402':14,29,33,64,179,226 'x402 chat agent' 'x402-enabled':32 'x402-payment'","prices":[{"id":"fed2a1e4-20fa-4af4-9c94-b2eb1ed5ecf4","listingId":"3767f416-5688-4c3f-bbb3-1f04001b8cc7","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0x901F67814E408A152B931255308B7EcBe63cb867","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x901F67814E408A152B931255308B7EcBe63cb867","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f6fe81e5045b65fa7766cf","description":"Personal use | 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":"2026-04-18T06:06:22.932Z"}],"sources":[{"listingId":"3767f416-5688-4c3f-bbb3-1f04001b8cc7","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f6fe81e5045b65fa7766cf","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T06:06:22.932Z","lastSeenAt":"2026-04-22T02:30:07.631Z"}],"details":{"listingId":"3767f416-5688-4c3f-bbb3-1f04001b8cc7","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f6fe81e5045b65fa7766cf \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <your-x402-payment-proof>\" \\\n  -d '{\"input\": \"What markets are trending today?\"}'","exampleRequest":{"input":"What markets are trending today?"},"exampleResponse":{"response":"Currently trending: Polymarket's Fed rate decision market is seeing high volume, and several new meme tokens launched on Pump.fun in the last hour."},"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:68f6fe81e5045b65fa7766cf"},{"claim":"USDC asset contract is 0x036CbD53842c5426634e7929541eC2318f3dCF7e","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f6fe81e5045b65fa7766cf"},{"claim":"Questflow aggregates Polymarket, Pump.fun, OKX, Opinion Labs 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:68f6fe81e5045b65fa7766cf"},{"claim":"Description in x402 challenge is 'Personal use | Powered by Questflow'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f6fe81e5045b65fa7766cf"}],"useCases":["Sending a text query to a Questflow AI agent and receiving a response via x402 micropayment","Integrating a pay-per-use AI agent into an automated pipeline on Base Sepolia testnet","Testing x402 payment protocol flows with a live agent endpoint"],"bestFor":["Developers experimenting with x402 payment-gated AI agents","Testing micropayment-based agent interactions on Base Sepolia","Prototyping agent-to-agent communication with USDC payments"],"notFor":["Production workloads requiring mainnet settlement and SLAs","Users needing detailed API documentation or guaranteed response schemas","Free or unauthenticated AI chat access"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:51.808Z"},"updatedAt":"2026-04-22T02:30:07.631Z"}}