{"id":"933cdc12-39c5-4987-957d-b0e9e3150fb3","shortId":"2Lh5CT","kind":"x402","title":"Token address lookup endpoint on Barvis.io (x402-payable, currently unresponsive)","tagline":"Token address lookup endpoint on Barvis.io (x402-payable, currently unresponsive)","description":"This endpoint is listed as an x402-payable API at https://api.barvis.io/token/address, presumably intended to provide token address information—likely cryptocurrency or blockchain token contract addresses given the URL structure. However, during probing, the endpoint did not return a 402 Payment Required challenge on either GET or POST methods, and the root origin also returned no response.\n\nNo crawl data, OpenAPI schema, documentation, or AI plugin manifest was found for this service. Without any supporting material, the exact capabilities, request/response formats, pricing, and intended use cases cannot be confirmed. The domain \"barvis.io\" does not appear to have publicly accessible documentation at the time of probing.\n\nGiven the complete lack of response from the endpoint and the absence of any documentation or schema, this listing should be treated as a stub. Users and agents should verify availability before attempting integration.","tags":[],"capabilities":["token-address-lookup","x402-payment","blockchain-data"],"categories":["crypto","blockchain"],"synonyms":["token contract address","token lookup","crypto token address","blockchain token resolver","barvis token API"],"warnings":["Endpoint did not return any HTTP response on GET or POST—may be down or decommissioned","No documentation, OpenAPI schema, or crawl data available","All capabilities and use cases are inferred from the URL path; none are confirmed","Root origin (https://api.barvis.io) also returned no response"],"endpointUrl":"https://api.barvis.io/token/address","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x45A33aC6DB4455460b364A1fc1aE8C489Bc644A7","scheme":"exact","network":"base","mimeType":"","resource":"https://api.barvis.io/token/address","description":"","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true},"output":null},"maxAmountRequired":"100000","maxTimeoutSeconds":60}]},"qualityScore":"0.100","qualityRationale":"The endpoint did not respond to GET or POST probes (no 402 challenge, no HTTP status at all), the root origin was also unreachable, and zero crawl pages or documentation were found. Nearly all listing details are inferred from the URL path 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'402':64 'absenc':141 'access':123 'address':2,13,42,50 'agent':157 'ai':89 'also':78 'api':32 'api.barvis.io':35 'api.barvis.io/token/address,':34 'appear':119 'attempt':162 'avail':160 'barvis token API' 'barvis.io':6,17,116 'blockchain':47 'blockchain token resolver' 'blockchain-data' 'cannot':111 'capabl':103 'case':110 'challeng':67 'complet':132 'confirm':113 'contract':49 'crawl':83 'crypto token address' 'cryptocurr':45 'current':10,21 'data':84 'document':87,124,144 'domain':115 'either':69 'endpoint':4,15,24,59,138 'exact':102 'format':105 'found':93 'get':70 'given':51,130 'howev':55 'inform':43 'integr':163 'intend':38,108 'lack':133 'like':44 'list':26,148 'lookup':3,14 'manifest':91 'materi':100 'method':73 'openapi':85 'origin':77 'payabl':9,20,31 'payment':65 'plugin':90 'post':72 'presum':37 'price':106 'probe':57,129 'provid':40 'public':122 'request/response':104 'requir':66 'respons':81,135 'return':62,79 'root':76 'schema':86,146 'servic':96 'structur':54 'stub':154 'support':99 'time':127 'token':1,12,41,48 'token contract address' 'token lookup' 'token-address-lookup' 'treat':151 'unrespons':11,22 'url':53 'use':109 'user':155 'verifi':159 'without':97 'x402':8,19,30 'x402-payable':7,18,29 'x402-payment'","prices":[{"id":"bbc8974a-2d06-4dac-8a88-58def72adc65","listingId":"933cdc12-39c5-4987-957d-b0e9e3150fb3","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"100000","chain":"base","payTo":"0x45A33aC6DB4455460b364A1fc1aE8C489Bc644A7","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x45A33aC6DB4455460b364A1fc1aE8C489Bc644A7","scheme":"exact","network":"base","mimeType":"","resource":"https://api.barvis.io/token/address","description":"","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true},"output":null},"maxAmountRequired":"100000","maxTimeoutSeconds":60}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":60},"createdAt":"2026-04-18T18:31:25.633Z"}],"sources":[{"listingId":"933cdc12-39c5-4987-957d-b0e9e3150fb3","source":"x402_bazaar","sourceId":"https://api.barvis.io/token/address","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:25.633Z","lastSeenAt":"2026-04-23T00:30:51.271Z"}],"details":{"listingId":"933cdc12-39c5-4987-957d-b0e9e3150fb3","quickStartSnippet":"# Endpoint was unresponsive at time of probing.\n# Expected x402 flow:\ncurl -X GET https://api.barvis.io/token/address\n# Should return 402 with payment challenge headers when live.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true},"output":null},"openapiUrl":null,"agentsTxtUrl":null,"citations":[],"useCases":["Looking up token contract addresses by name or symbol","Resolving blockchain token metadata","Integrating token address data into trading or analytics workflows"],"bestFor":["Agents needing programmatic token address resolution","Blockchain application developers","Crypto data aggregation pipelines"],"notFor":["Users needing guaranteed uptime—endpoint was unresponsive during probing","Non-blockchain or non-crypto use cases"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:09.162Z"},"updatedAt":"2026-04-23T00:30:51.271Z"}}