{"id":"00d15571-a7de-4e04-915f-506a13f02d7a","shortId":"kMEYwY","kind":"x402","title":"RPL liquidity data via x402 micropayment on Base network for $0.02 per request.","tagline":"RPL liquidity data via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint provides DeFi liquidity data for the RPL (Rocket Pool) token, accessible at `https://lowpaymentfee.com/api/v1/defi/RPL/liquidity`. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, covering data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. The price per call is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. There are no API keys, no rate limits, and no minimum commitments — each request is paid individually via the X-PAYMENT header. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a maximum timeout of 300 seconds.\n\nDocumentation is extremely sparse. The landing page lists available endpoints and pricing but provides no request/response schemas, parameter descriptions, or example payloads for the DeFi liquidity endpoint specifically. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. As a result, the exact request body format and response structure for RPL liquidity data must be discovered experimentally.","tags":[],"capabilities":["defi-liquidity-data","rpl-token","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["defi","finance"],"synonyms":["Rocket Pool liquidity","RPL DeFi data","RPL liquidity API","DeFi token liquidity","x402 DeFi endpoint","crypto liquidity data"],"warnings":["No request or response schema documented — callers must discover the API contract experimentally.","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content.","The specific DeFi/RPL/liquidity endpoint is not listed on the landing page; it may be an unlisted or experimental route.","No SLA, rate limit, or uptime guarantees are documented."],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/RPL/liquidity","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/defi/RPL/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation for request parameters, response schema, or example payloads. The docs/pricing/README pages are all empty beyond a wallet connect prompt. This is effectively a stub listing with verified liveness but minimal usable 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'0.02':11,24,112 '000':101 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':147 '0x8335':106 '20':100 '2913':107 '300':153 '6':116 'DeFi token liquidity' 'RPL DeFi data' 'RPL liquidity API' 'Rocket Pool liquidity' 'accept':92 'access':39 'address':146 'ai/ml':63 'analyt':62 'api':56,121,185 'avail':163 'base':8,21,81,102,109 'base-network' 'bodi':207 'broader':49 'call':55,98 'challeng':85 'commit':129 'confirm':86 'connect':194 'content':200 'cover':60 'crypto liquidity data' 'data':3,16,32,61,215 'decim':117 'defi':30,179 'defi-liquidity-data' 'descript':173 'discov':218 'doc':184 'document':155 'endpoint':28,70,88,164,181 'equal':111 'exact':205 'exampl':175 'experiment':219 'extrem':157 'finance/web3':65 'format':208 'given':113 'header':140 'individu':134 'infer':64 'infrastructur':67 'key':122 'land':160 'limit':125 'liquid':2,15,31,180,214 'list':162 'live':90 'lowpaymentfee.com':42,59 'lowpaymentfee.com/api/v1/defi/rpl/liquidity':41 'maximum':150 'micropay':6,19 'minimum':128 'must':216 'network':9,22,82 'no-api-key' 'offer':57 'page':161,189 'paid':133 'paramet':172 'part':46 'pay':53 'pay-per-cal':52 'pay-per-request' 'payload':176 'payment':74,139,142 'per':12,25,54,97 'pool':37 'post':93 'price':96,166,186 'prompt':196 'protocol':75 'provid':29,168 'rate':124 'readm':188 'render':191 'request':13,26,94,131,206 'request/response':170 'respons':210 'result':203 'rocket':36 'rpl':1,14,35,213 'rpl-token' 'schema':171 'second':154 'sent':144 'settl':76 'spars':158 'specif':182 'structur':211 'suit':50 'timeout':151 'token':38 'unit':103 'usdc':78,105,114 'usdc-settlement' 'use':71 'util':68 'via':4,17,135 'wallet':195 'x':138 'x-payment':137 'x402':5,18,73,84 'x402 DeFi endpoint' 'x402-payment'","prices":[{"id":"1b48de1c-ffa8-458a-bf51-13db0ed31fa5","listingId":"00d15571-a7de-4e04-915f-506a13f02d7a","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/defi/RPL/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:33:50.221Z"}],"sources":[{"listingId":"00d15571-a7de-4e04-915f-506a13f02d7a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/RPL/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:50.221Z","lastSeenAt":"2026-04-23T00:30:59.728Z"}],"details":{"listingId":"00d15571-a7de-4e04-915f-506a13f02d7a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/RPL/liquidity \\\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":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/defi/RPL/liquidity"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/defi/RPL/liquidity"},{"claim":"All APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation, API, pricing, and README pages show only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Querying current liquidity metrics for the RPL (Rocket Pool) token","Building DeFi dashboards that need on-demand liquidity snapshots","Automated trading or arbitrage bots checking RPL pool depth","Research and analytics on Rocket Pool DeFi activity"],"bestFor":["Agents or bots needing pay-per-call DeFi data without API key management","Developers prototyping DeFi tools who want instant access with no signup","Low-volume consumers who prefer micropayments over subscription plans"],"notFor":["High-frequency trading requiring sub-second latency guarantees (no SLA documented)","Users who need comprehensive documentation or SDKs before integrating","Anyone needing data for tokens other than RPL from this specific endpoint"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:31:18.999Z"},"updatedAt":"2026-04-23T00:30:59.728Z"}}