{"id":"a12ef13a-378a-430c-96fa-058fe1397e51","shortId":"SGugV9","kind":"x402","title":"x402 ecosystem analytics API returning merchant/server data behind a 402 paywall.","tagline":"x402 ecosystem analytics API returning merchant/server data behind a 402 paywall.","description":"x402scan is an analytics dashboard and block explorer for the x402 payment protocol ecosystem. The `/api/data/merchants` endpoint is a paywall-protected API that returns data about merchants (servers) participating in the x402 network. The parent application tracks global x402 statistics including transaction counts, volume, buyer/seller counts, and top servers across chains like Base and Solana, with facilitators including Coinbase, PayAI, Corbits, Polymer, and Virtuals Protocol.\n\nThe endpoint responds with HTTP 402 on unauthenticated GET requests, confirming it is live and follows the x402 protocol. However, the 402 challenge body returned is empty (`{}`), which means the specific payment terms (price, token, chain, payTo address) are not available from the probe. No OpenAPI schema, dedicated API documentation, or pricing page exists — the `/docs`, `/api`, `/pricing`, and `/README` paths all return 404.\n\nBased on the dashboard's homepage, x402scan v2 tracks approximately 89.68K transactions and $424.55K in volume over 24-hour windows, with ~9.47K buyers and ~550 sellers. The merchants endpoint likely returns structured data about these servers, but without documentation or a sample response the exact schema is unknown.","tags":[],"capabilities":["x402-paywall","merchant-data","blockchain-analytics","x402-ecosystem-explorer","transaction-volume-stats"],"categories":["analytics","blockchain","search"],"synonyms":["x402 explorer","x402 block explorer","x402 merchant list","x402 server analytics","x402 transaction tracker","x402scan API","402 payment analytics"],"warnings":["Empty 402 challenge body — payment terms (price, token, chain, payTo) are not discoverable from the probe","No API documentation found; /docs, /api, /pricing, /README all return 404","No OpenAPI or schema available — response format is unknown","This appears to be a Vercel preview deployment (URL contains hash), not a stable production URL","Price per request is unknown"],"endpointUrl":"https://x402scan-j55w7ornb-merit-systems.vercel.app/api/data/merchants","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x2EC4545f96A24876764bF2B04D54E66A1351bE71","amount":"10000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (returns 402) but the challenge body is empty, there is no API documentation, no OpenAPI schema, no pricing information, and no example responses. The exact data schema and payment terms are unknown, making this effectively a stub 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'/api/data/merchants':38 '/docs':144 '/pricing':146 '/readme':148 '24':172 '402':10,21,94,110 '402 payment analytics' '404':152 '424.55':167 '550':180 '89.68':163 '9.47':176 'across':73 'address':126 'analyt':3,14,26 'api':4,15,45,137 'applic':59 'approxim':162 'avail':129 'base':76,153 'behind':8,19 'block':29 'blockchain-analytics' 'bodi':112 'buyer':178 'buyer/seller':68 'chain':74,124 'challeng':111 'coinbas':82 'confirm':99 'corbit':84 'count':66,69 'dashboard':27,156 'data':7,18,48,188 'dedic':136 'document':138,194 'ecosystem':2,13,36 'empti':115 'endpoint':39,90,184 'exact':200 'exist':142 'explor':30 'facilit':80 'follow':104 'get':97 'global':61 'homepag':158 'hour':173 'howev':108 'http':93 'includ':64,81 'k':164,168,177 'like':75,185 'live':102 'mean':117 'merchant':50,183 'merchant-data' 'merchant/server':6,17 'network':56 'openapi':134 'page':141 'parent':58 'particip':52 'path':149 'payai':83 'payment':34,120 'payto':125 'paywal':11,22,43 'paywall-protect':42 'polym':85 'price':122,140 'probe':132 'protect':44 'protocol':35,88,107 'request':98 'respond':91 'respons':198 'return':5,16,47,113,151,186 'sampl':197 'schema':135,201 'seller':181 'server':51,72,191 'solana':78 'specif':119 'statist':63 'structur':187 'term':121 'token':123 'top':71 'track':60,161 'transact':65,165 'transaction-volume-stats' 'unauthent':96 'unknown':203 'v2':160 'virtual':87 'volum':67,170 'window':174 'without':193 'x402':1,12,33,55,62,106 'x402 block explorer' 'x402 explorer' 'x402 merchant list' 'x402 server analytics' 'x402 transaction tracker' 'x402-ecosystem-explorer' 'x402-paywall' 'x402scan':23,159 'x402scan API'","prices":[{"id":"2b94f6ce-3e17-4cad-ae41-a00bc3b53554","listingId":"a12ef13a-378a-430c-96fa-058fe1397e51","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x2EC4545f96A24876764bF2B04D54E66A1351bE71","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x2EC4545f96A24876764bF2B04D54E66A1351bE71","amount":"10000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:33.576Z"}],"sources":[{"listingId":"a12ef13a-378a-430c-96fa-058fe1397e51","source":"x402_bazaar","sourceId":"https://x402scan-j55w7ornb-merit-systems.vercel.app/api/data/merchants","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:33.576Z","lastSeenAt":"2026-04-22T04:02:48.711Z"}],"details":{"listingId":"a12ef13a-378a-430c-96fa-058fe1397e51","quickStartSnippet":"curl -i https://x402scan-j55w7ornb-merit-systems.vercel.app/api/data/merchants\n# Returns 402 Payment Required with x402 challenge headers.\n# Supply the required x402 payment to receive merchant data.","exampleRequest":null,"exampleResponse":null,"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"x402scan is described as 'The x402 analytics dashboard and block explorer'","source_url":"https://x402scan-j55w7ornb-merit-systems.vercel.app"},{"claim":"Dashboard shows ~89.68K transactions, $424.55K volume, ~9.47K buyers, ~550 sellers in past 24 hours","source_url":"https://x402scan-j55w7ornb-merit-systems.vercel.app"},{"claim":"Top facilitators include Coinbase, PayAI, Corbits, Polymer, and Virtuals Protocol","source_url":"https://x402scan-j55w7ornb-merit-systems.vercel.app"},{"claim":"The endpoint returns HTTP 402 with an empty challenge body on GET","source_url":"https://x402scan-j55w7ornb-merit-systems.vercel.app/api/data/merchants"}],"useCases":["Querying the list of active x402 merchant servers and their metadata","Monitoring x402 ecosystem transaction volume and buyer/seller counts","Building dashboards or agents that discover x402-enabled endpoints","Analyzing facilitator activity across the x402 network"],"bestFor":["Developers building on the x402 payment protocol who need merchant discovery data","Analytics tools tracking the x402 ecosystem","Agents that need to discover x402-payable endpoints programmatically"],"notFor":["General-purpose blockchain exploration (Ethereum, Bitcoin, etc.)","Users needing free/unauthenticated access to merchant data","Applications requiring detailed per-transaction data (no evidence this endpoint provides it)"],"kindDetails":{},"updatedAt":"2026-04-22T00:54:57.146Z"}}