{"id":"8f361d07-aa89-49cb-8691-afd8e6debc38","shortId":"ademyW","kind":"x402","title":"Get the current price of LRC (Loopring) via a pay-per-call x402 endpoint on Base.","tagline":"Get the current price of LRC (Loopring) via a pay-per-call x402 endpoint on Base.","description":"This endpoint returns the current price of the LRC (Loopring) token. It is part of the lowpaymentfee.com platform, which offers a suite of data, AI, finance, and utility APIs all gated behind the x402 payment protocol on the Base network. Each call costs $0.02 in USDC (USD Coin), settled on-chain with no API keys, no rate limits, and no subscriptions required.\n\nThe specific endpoint at `/api/v1/tokens/LRC/price` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, accepting payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC on Base (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02.\n\nThe broader lowpaymentfee.com platform also offers endpoints for analytics, AI inference (sentiment analysis, summarization, classification, embeddings), exchange rates, gas estimates, geocoding, and more — all at the same $0.02/request price point. Documentation pages exist but appear to require a wallet connection to view, so detailed request/response schemas are not available from the crawl.","tags":[],"capabilities":["token-price-lookup","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key","json-response"],"categories":["finance","crypto"],"synonyms":["LRC price","Loopring price","token price API","crypto price feed","x402 crypto API","pay-per-call price API","USDC micropayment API"],"warnings":["No request or response schema documented — the output format of the price data is unknown.","All documentation pages (docs, api, pricing, README) require wallet connection and returned no useful content.","The endpoint path suggests a single-token price lookup but there is no confirmation of what fields are returned."],"endpointUrl":"https://lowpaymentfee.com/api/v1/tokens/LRC/price","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/LRC/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The x402 challenge is live and confirms pricing, network, and asset details. However, no request/response schema, no documentation content (all doc pages just show 'Connect wallet'), and no example payloads are available, making integration details largely 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'/request':174 '0.02':78,145,173 '000':136 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':121 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':127 '20':135 '6':141 'LRC price' 'Loopring price' 'USDC micropayment API' 'accept':103,117 'address':120 'ai':59,155 'also':150 'amount':130 'analysi':158 'analyt':154 'api':63,89 'appear':181 'avail':195 'base':17,34,73,125,137 'base-network' 'behind':66 'broader':147 'call':13,30,76,133 'chain':86 'challeng':111 'classif':160 'coin':82 'confirm':112 'connect':186 'contract':126 'cost':77 'crawl':198 'crypto price feed' 'current':3,20,39 'data':58 'decim':142 'detail':190 'document':177 'embed':161 'endpoint':15,32,36,100,114,152 'equal':144 'estim':165 'exchang':162 'exist':179 'financ':60 'gas':164 'gate':65 'geocod':166 'get':1,18 'infer':156 'json':108 'json-response' 'key':90 'limit':93 'live':116 'loopr':7,24,44 'lowpaymentfee.com':51,148 'lrc':6,23,43 'maximum':129 'network':74 'no-api-key' 'offer':54,151 'on-chain':84 'page':178 'part':48 'pay':11,28 'pay-per-cal':10,27 'pay-per-call' 'pay-per-call price API' 'payment':69,118 'per':12,29,132 'platform':52,149 'point':176 'post':104 'price':4,21,40,175 'protocol':70 'rate':92,163 'request':105 'request/response':191 'requir':97,131,183 'return':37,107 'schema':192 'sentiment':157 'settl':83 'specif':99 'subscript':96 'suit':56 'summar':159 'token':45 'token price API' 'token-price-lookup' 'unit':138 'usd':81 'usdc':80,123,140 'usdc-settlement' 'use':122 'util':62 'via':8,25 'view':188 'wallet':185 'x402':14,31,68,110 'x402 crypto API' 'x402-payment'","prices":[{"id":"bf9c43c9-8a33-49e5-ab39-a131baca6417","listingId":"8f361d07-aa89-49cb-8691-afd8e6debc38","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/LRC/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:06.921Z"}],"sources":[{"listingId":"8f361d07-aa89-49cb-8691-afd8e6debc38","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/tokens/LRC/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:06.921Z","lastSeenAt":"2026-04-24T03:02:52.405Z"}],"details":{"listingId":"8f361d07-aa89-49cb-8691-afd8e6debc38","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/tokens/LRC/price \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with an x402 challenge requiring 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/tokens/LRC/price"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/tokens/LRC/price"},{"claim":"All APIs on the platform cost $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers finance, AI, data analytics, and utility endpoints","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching the current LRC (Loopring) token price in an automated trading or portfolio bot","Integrating real-time token pricing into a DeFi dashboard without managing API keys","Agent-driven price lookups where per-call crypto payment is preferred over subscriptions"],"bestFor":["Developers or agents needing on-demand LRC price data without subscription overhead","x402-compatible agents that can pay per request in USDC on Base","Low-volume or bursty use cases where pay-per-call is more economical than a monthly plan"],"notFor":["High-frequency trading requiring sub-second latency and bulk pricing (no documented batch endpoint)","Users who cannot transact in USDC on the Base network","Anyone needing historical price data or OHLCV candles (endpoint appears to return current price only)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:39.819Z"},"updatedAt":"2026-04-24T03:02:52.405Z"}}