{"id":"7c2102b5-0ca7-438f-a192-aaa68f06f6fa","shortId":"u4sQh9","kind":"x402","title":"AI-powered email campaign specialist: sequences, subject lines, segmentation, and conversion optimization.","tagline":"AI-powered email campaign specialist: sequences, subject lines, segmentation, and conversion optimization.","description":"This x402 endpoint at marketing.apitoai.xyz/email_campaign_specialist is described as a tool for designing email sequences, crafting compelling subject lines, segmenting audiences, and optimizing email campaigns for conversions. It is part of the apitoai.xyz marketing suite and is intended to be purchased per-call via the x402 payment protocol.\n\nHowever, during probing the endpoint did not return the expected HTTP 402 payment challenge on either POST or GET requests, and the root origin also failed to respond. No OpenAPI schema, documentation, crawl pages, or additional metadata were available. This means the endpoint's actual capabilities, pricing, accepted payment tokens, and input/output schemas are entirely unknown beyond the brief title and description provided in the Bazaar listing.\n\nBecause the endpoint could not be confirmed as live and no supplementary documentation exists, prospective users should treat this listing as a stub. It may be temporarily offline, misconfigured, or abandoned. If you need email campaign AI tooling via x402, verify reachability before integrating.","tags":[],"capabilities":["email-sequence-design","subject-line-generation","audience-segmentation","email-campaign-optimization","conversion-optimization"],"categories":["llm","marketing"],"synonyms":["email marketing AI","email sequence generator","subject line optimizer","email campaign tool","audience segmentation API","drip campaign designer","email copywriting API"],"warnings":["Endpoint did not return HTTP 402 on POST or GET — liveness unconfirmed","Root origin (marketing.apitoai.xyz) returned no response","No OpenAPI schema, documentation, or crawl content available","Pricing, accepted tokens, and input/output schemas are entirely unknown","Possible abandoned or misconfigured endpoint"],"endpointUrl":"https://marketing.apitoai.xyz/email_campaign_specialist","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x7362B94B23Ce9F6Cf9ec8E08d0f00582b048b696","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://marketing.apitoai.xyz/email_campaign_specialist","description":"Design email sequences, craft compelling subject lines, segment audiences, and optimize email campaigns for conversions","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"message":{"type":"string","required":true,"description":"Your prompt/query for the agent"}},"discoverable":true},"output":{"type":"object","properties":{"data":{"type":"object","properties":{"response":{"type":"string","description":"Agent response from Gemini Pro"}}},"agent":{"type":"string","description":"Agent name"},"success":{"type":"boolean","description":"Whether the request was successful"},"timestamp":{"type":"string","description":"ISO 8601 timestamp"}}}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.100","qualityRationale":"The endpoint did not respond with a 402 challenge on any method, the root origin was unreachable, no documentation or schema was found, and zero crawl pages were returned. All information is derived solely from the Bazaar listing title/description. This is effectively a 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'402':88 'abandon':174 'accept':124 'actual':121 'addit':112 'ai':2,15,180 'ai-pow':1,14 'also':101 'apitoai.xyz':60 'audienc':48 'audience segmentation API' 'audience-segmentation' 'avail':115 'bazaar':142 'beyond':133 'brief':135 'call':71 'campaign':5,18,52,179 'capabl':122 'challeng':90 'compel':44 'confirm':150 'convers':12,25,54 'conversion-optimization' 'could':147 'craft':43 'crawl':109 'describ':35 'descript':138 'design':40 'document':108,156 'drip campaign designer' 'either':92 'email':4,17,41,51,178 'email campaign tool' 'email copywriting API' 'email marketing AI' 'email sequence generator' 'email-campaign-optimization' 'email-sequence-design' 'endpoint':29,81,119,146 'entir':131 'exist':157 'expect':86 'fail':102 'get':95 'howev':77 'http':87 'input/output':128 'integr':187 'intend':65 'line':9,22,46 'list':143,163 'live':152 'market':61 'marketing.apitoai.xyz':32 'marketing.apitoai.xyz/email_campaign_specialist':31 'may':168 'mean':117 'metadata':113 'misconfigur':172 'need':177 'offlin':171 'openapi':106 'optim':13,26,50 'origin':100 'page':110 'part':57 'payment':75,89,125 'per':70 'per-cal':69 'post':93 'power':3,16 'price':123 'probe':79 'prospect':158 'protocol':76 'provid':139 'purchas':68 'reachabl':185 'request':96 'respond':104 'return':84 'root':99 'schema':107,129 'segment':10,23,47 'sequenc':7,20,42 'specialist':6,19 'stub':166 'subject':8,21,45 'subject line optimizer' 'subject-line-generation' 'suit':62 'supplementari':155 'temporarili':170 'titl':136 'token':126 'tool':38,181 'treat':161 'unknown':132 'user':159 'verifi':184 'via':72,182 'x402':28,74,183","prices":[{"id":"42b1a947-b861-4cce-9132-dc59d3306b1c","listingId":"7c2102b5-0ca7-438f-a192-aaa68f06f6fa","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x7362B94B23Ce9F6Cf9ec8E08d0f00582b048b696","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x7362B94B23Ce9F6Cf9ec8E08d0f00582b048b696","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://marketing.apitoai.xyz/email_campaign_specialist","description":"Design email sequences, craft compelling subject lines, segment audiences, and optimize email campaigns for conversions","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"message":{"type":"string","required":true,"description":"Your prompt/query for the agent"}},"discoverable":true},"output":{"type":"object","properties":{"data":{"type":"object","properties":{"response":{"type":"string","description":"Agent response from Gemini Pro"}}},"agent":{"type":"string","description":"Agent name"},"success":{"type":"boolean","description":"Whether the request was successful"},"timestamp":{"type":"string","description":"ISO 8601 timestamp"}}}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:29.926Z"}],"sources":[{"listingId":"7c2102b5-0ca7-438f-a192-aaa68f06f6fa","source":"x402_bazaar","sourceId":"https://marketing.apitoai.xyz/email_campaign_specialist","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:29.926Z","lastSeenAt":"2026-04-22T04:02:44.255Z"}],"details":{"listingId":"7c2102b5-0ca7-438f-a192-aaa68f06f6fa","quickStartSnippet":"# Endpoint did not return a 402 challenge; integration details unknown.\n# Typical x402 POST pattern (hypothetical):\ncurl -X POST https://marketing.apitoai.xyz/email_campaign_specialist \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"prompt\": \"Design a 5-email welcome sequence for a SaaS product\"}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"message":{"type":"string","required":true,"description":"Your prompt/query for the agent"}},"discoverable":true},"output":{"type":"object","properties":{"data":{"type":"object","properties":{"response":{"type":"string","description":"Agent response from Gemini Pro"}}},"agent":{"type":"string","description":"Agent name"},"success":{"type":"boolean","description":"Whether the request was successful"},"timestamp":{"type":"string","description":"ISO 8601 timestamp"}}}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[],"useCases":["Generating multi-step email drip sequences for product launches","Crafting and A/B testing email subject lines","Segmenting subscriber lists for targeted campaigns","Optimizing email content and timing for higher conversion rates"],"bestFor":["Marketers automating email campaign creation","Developers integrating email marketing intelligence into SaaS products","Agencies needing on-demand email copy and strategy suggestions"],"notFor":["Sending actual emails (this is a content/strategy generation endpoint, not an ESP)","Users needing a guaranteed-live, production-grade service (endpoint liveness is unconfirmed)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:12:54.497Z"},"updatedAt":"2026-04-22T04:02:44.255Z"}}