{"id":"0f9cc84e-95cb-42d1-ac33-eea918292c79","shortId":"BeAHbd","kind":"x402","title":"Pay-per-call market quote endpoint for the LOW token, settled in USDC on Base via x402.","tagline":"Pay-per-call market quote endpoint for the LOW token, settled in USDC on Base via x402.","description":"This endpoint at lowpaymentfee.com provides a market quote for the \"LOW\" token via a POST request to `/api/v1/market/quote/LOW`. It is part of a broader suite of pay-per-request APIs offered by lowpaymentfee.com, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network.\n\nThe specific endpoint probed returns a valid x402 402 challenge, confirming it is live. The price per request is $0.02 (20,000 base units of USDC with 6 decimals). Payment is made via the x402 \"exact\" scheme to the specified payTo address, with a maximum timeout of 300 seconds. No API keys or rate limits are advertised; access is instant upon payment.\n\nDocumentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint's actual response format and the data fields returned for a LOW token quote are unknown. This limits the ability to assess the quality or usefulness of the data returned.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","market-quote","pay-per-request","no-api-key","crypto-price-data"],"categories":["finance","crypto"],"synonyms":["LOW token price","LOW market data","LOW token quote","crypto quote API","x402 market data","pay-per-call crypto API","lowpaymentfee"],"warnings":["No API documentation available — /docs, /api, /pricing, and /README pages are all empty beyond a wallet-connect prompt","No OpenAPI or schema definition for request or response payloads","The LOW token itself is not a widely recognized asset; data quality and source are unknown","No SLA, rate limit, or uptime guarantees documented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/market/quote/LOW","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/market/quote/LOW","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no examples, and all documentation pages are blank beyond a wallet-connect prompt. The actual data returned is completely 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'/api/v1/market/quote/low':54 '/docs':168 '/pricing':170 '/readme':172 '0.02':116 '000':118 '20':117 '300':144 '402':105 '6':124 'LOW market data' 'LOW token price' 'LOW token quote' 'abil':221 'access':154 'actual':203 'addit':183 'address':138 'advertis':153 'ai/ml':74 'analyt':73 'api':67,147 'assess':223 'avail':199 'base':16,34,95,119 'base-network' 'beyond':160 'broader':60 'call':4,22 'challeng':106 'confirm':107 'connect':178 'crypto quote API' 'crypto-price-data' 'data':72,208,230 'decim':125 'detail':185 'document':159,194 'endpoint':7,25,38,81,99,201 'exact':132 'exampl':197 'extrem':165 'field':209 'finance/web3':76 'format':205 'infer':75 'infrastructur':78 'instant':156 'key':148 'land':162 'limit':151,219 'live':110 'low':10,28,47,213 'lowpaymentfee' 'lowpaymentfee.com':40,70 'made':128 'market':5,23,43 'market-quote' 'maximum':141 'network':96 'no-api-key' 'offer':68 'openapi':189 'page':163,173 'part':57 'pay':2,20,64 'pay-per-cal':1,19 'pay-per-call crypto API' 'pay-per-request':63 'payload':198 'payment':88,126,158 'payto':137 'per':3,21,65,113 'platform':84 'post':51 'price':112 'probe':100 'prompt':180 'protocol':89 'provid':41 'qualiti':225 'quot':6,24,44,215 'rate':150 'render':175 'request':52,66,114 'request/response':192 'respons':204 'return':101,210,231 'schema':193 'scheme':133 'second':145 'settl':12,30,90 'span':71 'spars':166 'spec':190 'specif':98 'specifi':136 'suit':61 'technic':184 'timeout':142 'token':11,29,48,214 'unit':120 'unknown':217 'upon':157 'usdc':14,32,92,122 'usdc-settlement' 'use':85,227 'util':79 'valid':103 'via':17,35,49,129 'wallet':179 'x402':18,36,87,104,131 'x402 market data' 'x402-payment'","prices":[{"id":"6df02d17-5eae-4406-9eef-6e50925cee69","listingId":"0f9cc84e-95cb-42d1-ac33-eea918292c79","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/market/quote/LOW","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:59.397Z"}],"sources":[{"listingId":"0f9cc84e-95cb-42d1-ac33-eea918292c79","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/market/quote/LOW","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:59.397Z","lastSeenAt":"2026-04-23T20:01:24.506Z"}],"details":{"listingId":"0f9cc84e-95cb-42d1-ac33-eea918292c79","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/market/quote/LOW \\\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 a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/market/quote/LOW"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching a real-time market quote for the LOW token","Integrating LOW token pricing into a trading bot or portfolio tracker","Agent-driven on-demand crypto price lookups without API key management"],"bestFor":["Developers or agents needing LOW token quotes without subscription commitments","x402-compatible agents that can pay per request in USDC on Base","Quick one-off price checks for the LOW token"],"notFor":["High-frequency trading requiring sub-second latency guarantees (no SLA documented)","Users needing detailed historical price data or OHLCV candles (not documented)","Anyone requiring comprehensive API documentation before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:31:01.879Z"},"updatedAt":"2026-04-23T20:01:24.506Z"}}