{"id":"96d122e6-1b0d-4642-a28c-b9f9ffb18a23","shortId":"PdNGTf","kind":"x402","title":"Crypto token data for ANKR via x402 micropayment on Base, $0.02 per request.","tagline":"Crypto token data for ANKR via x402 micropayment on Base, $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides token-level data for ANKR (Ankr Network) as part of a broader suite of finance, crypto, AI, and utility APIs. The specific resource `/api/v1/tokens/ANKR` is accessed via HTTP POST and gated by the x402 payment protocol, settling in USDC on the Base network at $0.02 per call (20,000 base units with 6 decimals). No API keys or rate limits are required — each request is individually paid for via the X-PAYMENT header.\n\nThe provider's landing page lists a wide catalog of endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities, all uniformly priced at $0.02 per request. However, documentation beyond the landing page is essentially empty (all sub-pages just show a \"Connect wallet\" prompt), so the exact response schema for this token endpoint is unknown. Based on the URL pattern and the site's Finance & Web3 category (which includes price feeds, exchange rates, token quotes, and gas estimates), this endpoint likely returns market or metadata information for the ANKR token.\n\nThe endpoint is live and responds with a valid x402 challenge (HTTP 402) confirming payment parameters. Settlement is to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base. The maximum timeout for payment is 300 seconds.","tags":[],"capabilities":["x402-payment","crypto-token-data","usdc-base-settlement","per-request-pricing","no-api-key","http-post"],"categories":["crypto","finance"],"synonyms":["ANKR token data","Ankr Network API","crypto token info","token price API","x402 crypto API","micropayment API","Base USDC payment"],"warnings":["No API documentation available — all doc pages return only a 'Connect wallet' prompt","Response schema for /api/v1/tokens/ANKR is completely undocumented","No example responses or field descriptions available","Provider catalog is very broad (AI, analytics, finance, utils) which may indicate a thin wrapper or placeholder service"],"endpointUrl":"https://lowpaymentfee.com/api/v1/tokens/ANKR","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/tokens/ANKR","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is live with a valid x402 challenge and clear pricing, but there is no documentation, no response schema, and no example responses available. All doc/pricing/API pages beyond the landing page are empty. The actual data returned is 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'0.02':11,24,77,131 '000':81 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':219 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':223 '20':80 '300':232 '402':211 '6':85 'ANKR token data' 'Ankr Network API' 'Base USDC payment' 'access':58 'across':118 'address':218 'ai':49 'ai/ml':121 'analyt':120 'ankr':5,18,37,38,197 'api':52,88 'base':10,23,74,82,164,225 'beyond':136 'broader':44 'call':79 'catalog':115 'categori':175 'challeng':209 'confirm':212 'connect':150 'contract':222 'crypto':1,14,48 'crypto token info' 'crypto-token-data' 'data':3,16,35,119 'decim':86 'document':135 'empti':142 'endpoint':28,117,161,188,200 'essenti':141 'estim':186 'exact':155 'exchang':180 'feed':179 'financ':47,173 'finance/web3':123 'gas':185 'gate':63 'header':106 'howev':134 'http':60,210 'http-post' 'includ':177 'individu':98 'infer':122 'inform':194 'infrastructur':125 'key':89 'land':110,138 'level':34 'like':189 'limit':92 'list':112 'live':202 'lowpaymentfee.com':30 'market':191 'maximum':227 'metadata':193 'micropay':8,21 'micropayment API' 'network':39,75 'no-api-key' 'page':111,139,146 'paid':99 'paramet':214 'part':41 'pattern':168 'payment':67,105,213,230 'per':12,25,78,132 'per-request-pricing' 'post':61 'price':129,178 'prompt':152 'protocol':68 'provid':31,108 'quot':183 'rate':91,181 'request':13,26,96,133 'requir':94 'resourc':55 'respond':204 'respons':156 'return':190 'schema':157 'second':233 'settl':69 'settlement':215 'show':148 'site':171 'specif':54 'sub':145 'sub-pag':144 'suit':45 'timeout':228 'token':2,15,33,160,182,198 'token price API' 'token-level':32 'uniform':128 'unit':83 'unknown':163 'url':167 'usdc':71,221 'usdc-base-settlement' 'use':220 'util':51,126 'valid':207 'via':6,19,59,101 'wallet':151 'web3':174 'wide':114 'x':104 'x-payment':103 'x402':7,20,66,208 'x402 crypto API' 'x402-payment'","prices":[{"id":"54a72685-c196-4b51-855b-a92b1791638a","listingId":"96d122e6-1b0d-4642-a28c-b9f9ffb18a23","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/tokens/ANKR","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:34:34.107Z"}],"sources":[{"listingId":"96d122e6-1b0d-4642-a28c-b9f9ffb18a23","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/tokens/ANKR","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:34.107Z","lastSeenAt":"2026-04-23T20:01:32.225Z"}],"details":{"listingId":"96d122e6-1b0d-4642-a28c-b9f9ffb18a23","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/tokens/ANKR \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns HTTP 402 with x402 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/tokens/ANKR"},{"claim":"Price is $0.02 per request (20000 base units USDC, 6 decimals) on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"No API keys, no rate limits, instant access advertised","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/tokens/ANKR"},{"claim":"Payment recipient address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/tokens/ANKR"}],"useCases":["Fetching ANKR token market data or metadata on demand","Agent-driven crypto portfolio monitoring with per-call payments","Integrating token information into trading bots without API key management","Pay-per-use token lookups for Web3 dashboards"],"bestFor":["AI agents needing on-demand crypto token data without subscription","Developers wanting zero-setup, pay-per-call token APIs","x402-compatible clients on the Base network"],"notFor":["High-frequency trading requiring sub-second latency guarantees (no SLA documented)","Users needing detailed API documentation or response schema before integrating","Bulk historical token data downloads (per-request pricing would be costly at scale)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:00:14.732Z"},"updatedAt":"2026-04-23T20:01:32.225Z"}}