{"id":"878ad51b-3e0a-4046-a8fc-f0f66e580c2e","shortId":"TJLQyg","kind":"x402","title":"Pay-per-call marketing AI agent on Base Sepolia via x402, powered by Questflow","tagline":"Pay-per-call marketing AI agent on Base Sepolia via x402, powered by Questflow","description":"The Marketer endpoint is an x402-payable AI agent hosted by Questflow on Base Sepolia testnet. It accepts a text prompt via HTTP POST and returns a text response from a \"Marketer\" agent. Payment is handled through the x402 protocol using USDC on Base Sepolia, with a maximum charge of 0.50 USDC per request and a timeout of up to 1200 seconds.\n\nThe endpoint exposes a simple input/output schema: send a JSON body with an `input` string field containing your message, and receive a JSON response with a `response` string field. No additional authentication beyond the x402 payment header is required. The agent is part of Questflow's swarm infrastructure, which also powers autonomous trading clones across prediction markets and crypto platforms.\n\nDocumentation is extremely sparse — there is no OpenAPI spec, no dedicated docs page, and no detailed description of what the Marketer agent actually does beyond its name. The endpoint is live and returns a valid 402 challenge, confirming it is operational on the Base Sepolia testnet. Given the testnet deployment and lack of documentation, this appears to be a development/preview endpoint rather than a production service.","tags":[],"capabilities":["x402-payment","ai-agent","text-generation","marketing-assistant","base-sepolia","usdc-payment","swarm-agent"],"categories":["llm","agent"],"synonyms":["marketing agent","AI marketer","Questflow marketer","x402 agent","pay-per-call AI","marketing chatbot","Questflow swarm"],"warnings":["Deployed on Base Sepolia testnet — not a production/mainnet endpoint","No documentation or OpenAPI spec available","Agent capabilities are entirely inferred from the name 'Marketer'; no detailed description exists","Response example is fabricated for illustration — actual agent behavior is unknown","1200-second max timeout suggests potentially long-running requests"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9dcfbc87f09b659144239","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x05749e8d804294eC154376E2D675Cf0DDFb70F9b","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9dcfbc87f09b659144239","description":"Marketer | 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":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge with a clear input/output schema, but there is no documentation, no OpenAPI spec, no usage examples, and the description is just the word 'Marketer'. The testnet deployment and lack of any detail about agent capabilities make this effectively a stub 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'1200':92 '402':189 'AI marketer' 'Questflow marketer' 'Questflow swarm' 'accept':49 'across':148 'actual':176 'addit':124 'agent':7,22,40,64,134,175 'ai':6,21,39 'ai-agent' 'also':143 'appear':209 'authent':125 'autonom':145 'base':9,24,45,75,197 'base-sepolia' 'beyond':126,178 'bodi':104 'call':4,19 'challeng':190 'charg':80 'clone':147 'confirm':191 'contain':110 'crypto':152 'dedic':164 'deploy':203 'descript':170 'detail':169 'development/preview':213 'doc':165 'document':154,207 'endpoint':33,95,182,214 'expos':96 'extrem':156 'field':109,122 'given':200 'handl':67 'header':130 'host':41 'http':54 'infrastructur':141 'input':107 'input/output':99 'json':103,116 'lack':205 'live':184 'market':5,20,32,63,150,174 'marketing agent' 'marketing chatbot' 'marketing-assistant' 'maximum':79 'messag':112 'name':180 'openapi':161 'oper':194 'page':166 'part':136 'pay':2,17 'pay-per-cal':1,16 'pay-per-call AI' 'payabl':38 'payment':65,129 'per':3,18,84 'platform':153 'post':55 'power':13,28,144 'predict':149 'product':218 'prompt':52 'protocol':71 'questflow':15,30,43,138 'rather':215 'receiv':114 'request':85 'requir':132 'respons':60,117,120 'return':57,186 'schema':100 'second':93 'send':101 'sepolia':10,25,46,76,198 'servic':219 'simpl':98 'spars':157 'spec':162 'string':108,121 'swarm':140 'swarm-agent' 'testnet':47,199,202 'text':51,59 'text-generation' 'timeout':88 'trade':146 'usdc':73,83 'usdc-payment' 'use':72 'valid':188 'via':11,26,53 'x402':12,27,37,70,128 'x402 agent' 'x402-payable':36 'x402-payment'","prices":[{"id":"52ed05c8-537d-42a0-93cc-5eefe1d61e4b","listingId":"878ad51b-3e0a-4046-a8fc-f0f66e580c2e","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"500000","chain":"base-sepolia","payTo":"0x05749e8d804294eC154376E2D675Cf0DDFb70F9b","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x05749e8d804294eC154376E2D675Cf0DDFb70F9b","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9dcfbc87f09b659144239","description":"Marketer | 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":"2026-04-18T18:31:23.327Z"}],"sources":[{"listingId":"878ad51b-3e0a-4046-a8fc-f0f66e580c2e","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9dcfbc87f09b659144239","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:23.327Z","lastSeenAt":"2026-04-22T02:30:11.561Z"}],"details":{"listingId":"878ad51b-3e0a-4046-a8fc-f0f66e580c2e","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9dcfbc87f09b659144239 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"input\": \"Write a tagline for a new crypto wallet app\"}'","exampleRequest":{"input":"Write a tagline for a new crypto wallet app"},"exampleResponse":{"response":"Your keys, your coins, your future — all in one tap."},"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":"Endpoint returns a valid x402 challenge with 402 status on POST","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9dcfbc87f09b659144239"},{"claim":"Payment is in USDC on Base Sepolia with maxAmountRequired of 500000 (0.50 USDC)","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9dcfbc87f09b659144239"},{"claim":"Questflow is a platform for AI clones that aggregate onchain markets","source_url":"https://api-dev.intra-tls2.dctx.link"},{"claim":"Description in x402 challenge is 'Marketer | Powered by Questflow'","source_url":"https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9dcfbc87f09b659144239"}],"useCases":["Generating marketing copy or strategy suggestions via a pay-per-call agent","Integrating an AI marketing assistant into automated agent workflows","Testing x402 payment flows with a live AI agent on Base Sepolia"],"bestFor":["Developers experimenting with x402 payment protocol and AI agents","Agent-to-agent workflows needing a marketing-focused text responder","Prototyping pay-per-use AI services on Base Sepolia testnet"],"notFor":["Production marketing workloads requiring reliability guarantees and mainnet payments","Users needing detailed documentation or customizable agent behavior","High-throughput or low-latency use cases (1200s max timeout)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:10.538Z"},"updatedAt":"2026-04-22T02:30:11.561Z"}}