{"id":"4698fcec-b42c-49db-a297-ddd2980fd119","shortId":"kEzrMv","kind":"x402","title":"Spam detection API returning confidence scores, paid per-call via x402 on Base.","tagline":"Spam detection API returning confidence scores, paid per-call via x402 on Base.","description":"This endpoint from SlinklyLayer analyzes text content and determines whether it is spam, returning a confidence score and additional details. It is accessed via the x402 payment protocol on the Base network, settling in USDC (USD Coin) at a cost of $0.10 per request (100,000 base units with 6 decimals).\n\nThe API accepts a POST request with a JSON body containing a single required field, `content` (string), which holds the text to be analyzed. The endpoint returns a JSON response with spam classification results including a confidence score, though the exact response schema is not documented.\n\nDocumentation is minimal — the provider's landing page shows only \"Hello, world!\" and no docs, pricing, or README pages are available. The endpoint itself is live and responds with a valid x402 challenge, confirming it is operational. The output schema in the challenge confirms the POST method and the required `content` field, but no response schema or example outputs are provided.","tags":[],"capabilities":["spam-detection","content-classification","confidence-scoring","x402-payment","base-network","usdc-settlement"],"categories":["nlp","content-moderation"],"synonyms":["spam filter API","spam classifier","content spam check","text spam detection","spam scoring","junk content detector"],"warnings":["No documentation available — /docs, /api, /pricing, and /README all return 404.","Response schema is undocumented; the exact structure of the spam detection output is unknown.","Provider landing page shows only 'Hello, world!' — minimal evidence of an established service."],"endpointUrl":"https://x402.slinkylayer.ai/api/v1/proxy/00e31e91-413d-43f0-833d-56e6b6789aab/content-detect-spam","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x4f4BEb658084D7Bd7EA0b6F74DbF6e99f93d422d","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402.slinkylayer.ai/api/v1/proxy/00e31e91-413d-43f0-833d-56e6b6789aab/content-detect-spam","description":"Detect whether the provided content is spam and return a confidence score along with additional details.","outputSchema":{"input":{"type":"http","method":"POST","discoverable":true},"output":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"content":{"type":"string","required":true}}}}},"maxAmountRequired":"100000","maxTimeoutSeconds":60}]},"qualityScore":"0.400","qualityRationale":"The endpoint is live and returns a valid x402 challenge with a clear input schema (single required 'content' string field). However, there is no documentation, no response schema, no example responses, and the provider site is essentially blank. Pricing and input schema are inferred solely from the x402 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'000':74 '100':73 '6':78 'accept':82 'access':51 'addit':47 'analyz':33,103 'api':3,17,81 'avail':146 'base':14,28,59,75 'base-network' 'bodi':89 'call':10,24 'challeng':158,168 'classif':112 'coin':65 'confid':5,19,44,116 'confidence-scoring' 'confirm':159,169 'contain':90 'content':35,95,176 'content spam check' 'content-classification' 'cost':68 'decim':79 'detail':48 'detect':2,16 'determin':37 'doc':140 'document':125,126 'endpoint':30,105,148 'exact':120 'exampl':183 'field':94,177 'hello':136 'hold':98 'includ':114 'json':88,108 'junk content detector' 'land':132 'live':151 'method':172 'minim':128 'network':60 'oper':162 'output':164,184 'page':133,144 'paid':7,21 'payment':55 'per':9,23,71 'per-cal':8,22 'post':84,171 'price':141 'protocol':56 'provid':130,186 'readm':143 'request':72,85 'requir':93,175 'respond':153 'respons':109,121,180 'result':113 'return':4,18,42,106 'schema':122,165,181 'score':6,20,45,117 'settl':61 'show':134 'singl':92 'slinklylay':32 'spam':1,15,41,111 'spam classifier' 'spam filter API' 'spam scoring' 'spam-detection' 'string':96 'text':34,100 'text spam detection' 'though':118 'unit':76 'usd':64 'usdc':63 'usdc-settlement' 'valid':156 'via':11,25,52 'whether':38 'world':137 'x402':12,26,54,157 'x402-payment'","prices":[{"id":"a7403b47-acf8-4ea2-96cf-d2b4ebbee10b","listingId":"4698fcec-b42c-49db-a297-ddd2980fd119","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"100000","chain":"base","payTo":"0x4f4BEb658084D7Bd7EA0b6F74DbF6e99f93d422d","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x4f4BEb658084D7Bd7EA0b6F74DbF6e99f93d422d","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402.slinkylayer.ai/api/v1/proxy/00e31e91-413d-43f0-833d-56e6b6789aab/content-detect-spam","description":"Detect whether the provided content is spam and return a confidence score along with additional details.","outputSchema":{"input":{"type":"http","method":"POST","discoverable":true},"output":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"content":{"type":"string","required":true}}}}},"maxAmountRequired":"100000","maxTimeoutSeconds":60}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":60},"createdAt":"2026-04-21T18:32:34.522Z"}],"sources":[{"listingId":"4698fcec-b42c-49db-a297-ddd2980fd119","source":"x402_bazaar","sourceId":"https://x402.slinkylayer.ai/api/v1/proxy/00e31e91-413d-43f0-833d-56e6b6789aab/content-detect-spam","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:34.522Z","lastSeenAt":"2026-04-23T22:03:31.200Z"}],"details":{"listingId":"4698fcec-b42c-49db-a297-ddd2980fd119","quickStartSnippet":"curl -X POST https://x402.slinkylayer.ai/api/v1/proxy/00e31e91-413d-43f0-833d-56e6b6789aab/content-detect-spam \\\n  -H 'Content-Type: application/json' \\\n  -H 'X-PAYMENT: <x402_payment_header>' \\\n  -d '{\"content\": \"Buy now! Limited time offer!!!\"}'","exampleRequest":{"content":"Buy now! Limited time offer!!! Click here for free prizes."},"exampleResponse":null,"schema":{"input":{"type":"http","method":"POST","discoverable":true},"output":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"content":{"type":"string","required":true}}}}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint is live and returns a valid x402 challenge with x402Version 1 on POST.","source_url":"https://x402.slinkylayer.ai/api/v1/proxy/00e31e91-413d-43f0-833d-56e6b6789aab/content-detect-spam"},{"claim":"Payment is in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network with maxAmountRequired of 100000 (i.e., $0.10).","source_url":"https://x402.slinkylayer.ai/api/v1/proxy/00e31e91-413d-43f0-833d-56e6b6789aab/content-detect-spam"},{"claim":"The required input is a JSON body with a single 'content' string field.","source_url":"https://x402.slinkylayer.ai/api/v1/proxy/00e31e91-413d-43f0-833d-56e6b6789aab/content-detect-spam"},{"claim":"Provider landing page returns only 'Hello, world!'","source_url":"https://x402.slinkylayer.ai"}],"useCases":["Filtering user-generated content for spam before publishing","Scoring inbound messages or comments for spam likelihood","Automated moderation pipelines that need a spam confidence score","Preprocessing email or chat content for spam triage"],"bestFor":["Agents needing per-call spam detection without subscriptions","Workflows requiring a simple single-field spam check","Crypto-native applications settling micropayments on Base"],"notFor":["High-volume spam filtering where per-call costs add up (no bulk pricing documented)","Use cases requiring detailed spam categorization or explanation beyond a confidence score"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-04-22T00:13:27.88Z"},"updatedAt":"2026-04-23T22:03:31.200Z"}}