{"id":"55d45902-892c-415c-a962-8599c7a2f897","shortId":"ZfEERz","kind":"x402","title":"Get the current price of OP token on Base via x402 micropayment — $0.02 per request.","tagline":"Get the current price of OP token on Base via x402 micropayment — $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns the current price of the OP (Optimism) token. It is part of a broader suite of pay-per-call APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints use the x402 payment protocol on the Base network, settling in USDC at $0.02 per request with no API keys, rate limits, or subscriptions required.\n\nThe specific endpoint `/api/v1/tokens/OP/price` accepts POST requests and returns JSON. The x402 challenge confirms it is live, requiring a maximum of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) paid to the provider's address on Base. The payment timeout is 300 seconds. No OpenAPI schema, detailed documentation, or example responses were found in the crawl — the docs, pricing, and API pages all rendered only a \"Connect wallet\" prompt with no further content.\n\nBecause no response schema or sample output is available, the exact shape of the returned price data is unknown. Agents should expect a JSON object containing at minimum a price field for the OP token, but the precise structure must be discovered by making a paid call.","tags":[],"capabilities":["token-price-lookup","x402-payment","base-network","usdc-settlement","pay-per-request","real-time-data","crypto-market-data"],"categories":["finance","crypto"],"synonyms":["OP token price","Optimism price API","crypto price feed","token price endpoint","x402 crypto API","micropayment price API","Base USDC API"],"warnings":["No OpenAPI or response schema available — response format is unknown","Documentation pages (/docs, /pricing, /api, /README) all render only 'Connect wallet' with no usable content","The specific /api/v1/tokens/OP/price path is not listed on the provider's homepage; it may be an undocumented or dynamically-routed endpoint"],"endpointUrl":"https://lowpaymentfee.com/api/v1/tokens/OP/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/OP/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The x402 challenge is live and confirms pricing, network, and asset details. However, there is no OpenAPI spec, no response schema, no example responses, and the documentation pages are empty (only showing 'Connect wallet'). The endpoint's behavior must be inferred from its URL path 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'0.02':13,28,87,126 '000':121 '20':120 '300':145 '6':131 'Base USDC API' 'OP token price' 'Optimism price API' 'accept':103 'address':138 'agent':196 'ai/ml':65 'analyt':64 'api':56,92,164 'avail':185 'base':9,24,81,122,140 'base-network' 'broader':49 'call':55,223 'challeng':111 'confirm':112 'connect':170 'contain':202 'content':176 'crawl':159 'crypto price feed' 'crypto-market-data' 'current':3,18,37 'data':63,68,193 'decim':132 'detail':150 'discov':218 'doc':161 'document':151 'endpoint':32,73,101 'exact':187 'exampl':153 'expect':198 'field':207 'finance/web3':67 'found':156 'get':1,16 'infer':66 'json':108,200 'key':93 'limit':95 'live':115 'lowpaymentfee.com':34 'make':220 'maximum':118 'micropay':12,27 'micropayment price API' 'minimum':204 'must':216 'network':82 'object':201 'offer':57 'op':6,21,41,210 'openapi':148 'optim':42 'output':183 'page':165 'paid':133,222 'part':46 'pay':53 'pay-per-cal':52 'pay-per-request' 'payment':77,142 'per':14,29,54,88 'post':104 'precis':214 'price':4,19,38,162,192,206 'prompt':172 'protocol':78 'provid':61,136 'rate':94 'real-time-data' 'render':167 'request':15,30,89,105 'requir':98,116 'respons':154,179 'return':35,107,191 'sampl':182 'schema':149,180 'second':146 'servic':71 'settl':83 'shape':188 'sinc':128 'span':62 'specif':100 'structur':215 'subscript':97 'suit':50 'timeout':143 'token':7,22,43,211 'token price endpoint' 'token-price-lookup' 'unit':123 'unknown':195 'usd':127 'usdc':85,125,129 'usdc-settlement' 'use':74,130 'util':70 'via':10,25 'wallet':171 'x402':11,26,76,110 'x402 crypto API' 'x402-payment'","prices":[{"id":"53a9f4db-2487-4d14-8dde-eccb63829d28","listingId":"55d45902-892c-415c-a962-8599c7a2f897","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/OP/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":"2026-04-18T18:57:03.257Z"}],"sources":[{"listingId":"55d45902-892c-415c-a962-8599c7a2f897","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/tokens/OP/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:03.257Z","lastSeenAt":"2026-04-23T23:03:05.040Z"}],"details":{"listingId":"55d45902-892c-415c-a962-8599c7a2f897","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/tokens/OP/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 20,000 base units of USDC on Base (= $0.02)","source_url":"https://lowpaymentfee.com/api/v1/tokens/OP/price"},{"claim":"The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/tokens/OP/price"}],"useCases":["Fetching the current OP token price for trading bots or portfolio dashboards","Integrating real-time OP price data into DeFi applications without API key management","Agent-driven price checks where per-call micropayments replace subscription billing"],"bestFor":["Agents or apps needing on-demand OP token pricing without subscriptions","Low-volume or bursty workloads where $0.02/request is cheaper than a monthly plan","x402-native agents that can pay in USDC on Base"],"notFor":["High-frequency trading requiring sub-second latency and thousands of calls per minute (cost adds up quickly)","Users who need historical OHLCV data or charting — this appears to be a spot-price endpoint only"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:47.927Z"},"updatedAt":"2026-04-23T23:03:05.040Z"}}