{"id":"287fd74b-0f8a-484b-a83f-74a87786845a","shortId":"E6ZMna","kind":"x402","title":"ZEC liquidity data via x402 micropayment on Base network, $0.02 per request.","tagline":"ZEC liquidity data via x402 micropayment on Base network, $0.02 per request.","description":"This endpoint provides DeFi liquidity data for Zcash (ZEC) through the lowpaymentfee.com platform. It is part of a broader suite of pay-per-call APIs covering data analytics, AI/ML inference, finance, crypto, and utility services. The endpoint is accessed via HTTP POST and is gated by the x402 payment protocol, settling in USDC on the Base network at $0.02 per request.\n\nThe x402 challenge is live and returns a 402 Payment Required response with a well-formed payment challenge. The asset address (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) corresponds to USDC on Base. The maxAmountRequired of 20000 base units equals $0.02 (USDC uses 6 decimals). No API keys or rate limits are advertised; access is granted purely through per-request micropayment.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI schema, no request/response examples, and no description of what fields the ZEC liquidity response contains. The endpoint path suggests it returns liquidity metrics for ZEC in a DeFi context, but the exact response structure is unknown.","tags":[],"capabilities":["defi-liquidity-data","zec-zcash","x402-micropayment","usdc-base-settlement","pay-per-request"],"categories":["finance","crypto"],"synonyms":["ZEC liquidity","Zcash DeFi liquidity","crypto liquidity API","ZEC market data","DeFi liquidity endpoint","Zcash liquidity pool data"],"warnings":["No API documentation available — all doc pages return only a 'Connect wallet' prompt","No request or response schema documented; exact data returned is unknown","No OpenAPI spec or examples provided by the provider","The endpoint's actual data source and accuracy for ZEC liquidity are unverifiable"],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/ZEC/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/ZEC/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint exists and accepts payment. However, there is zero documentation on request parameters, response schema, or what 'ZEC liquidity' data actually contains. All doc pages returned only a wallet-connect stub. This is effectively a stub 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'0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':109 '20000':118 '402':95 '6':125 'DeFi liquidity endpoint' 'ZEC liquidity' 'ZEC market data' 'Zcash DeFi liquidity' 'Zcash liquidity pool data' 'access':64,135 'addit':165 'address':108 'advertis':134 'ai/ml':54 'analyt':53 'api':50,128,151 'asset':107 'base':8,20,81,114,119 'broader':43 'call':49 'challeng':89,105 'connect':160 'contain':186 'context':200 'correspond':110 'cover':51 'crawl':149 'crypto':57 'crypto liquidity API' 'data':3,15,30,52 'decim':126 'defi':28,199 'defi-liquidity-data' 'descript':178 'detail':167 'doc':150 'document':144 'endpoint':26,62,188 'equal':121 'exact':203 'exampl':175 'extrem':146 'field':181 'financ':56 'form':103 'gate':70 'grant':137 'http':66 'infer':55 'key':129 'limit':132 'liquid':2,14,29,184,193 'live':91 'lowpaymentfee.com':36 'maxamountrequir':116 'metric':194 'micropay':6,18,143 'network':9,21,82 'openapi':171 'page':155 'part':40 'path':189 'pay':47 'pay-per-cal':46 'pay-per-request' 'payment':74,96,104 'per':11,23,48,85,141 'per-request':140 'platform':37 'post':67 'price':152 'prompt':162 'protocol':75 'provid':27 'pure':138 'rate':131 'readm':154 'request':12,24,86,142 'request/response':174 'requir':97 'respons':98,185,204 'return':93,157,192 'schema':172 'servic':60 'settl':76 'spars':147 'structur':205 'suggest':190 'suit':44 'technic':166 'unit':120 'unknown':207 'usdc':78,112,123 'usdc-base-settlement' 'use':124 'util':59 'via':4,16,65 'wallet':161 'well':102 'well-form':101 'x402':5,17,73,88 'x402-micropayment' 'zcash':32 'zec':1,13,33,183,196 'zec-zcash'","prices":[{"id":"6b3f963e-eb84-4a51-8fcd-59319ffd27a9","listingId":"287fd74b-0f8a-484b-a83f-74a87786845a","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/ZEC/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":"287fd74b-0f8a-484b-a83f-74a87786845a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/ZEC/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:50.221Z","lastSeenAt":"2026-04-23T20:01:28.459Z"}],"details":{"listingId":"287fd74b-0f8a-484b-a83f-74a87786845a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/ZEC/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 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/defi/ZEC/liquidity"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/defi/ZEC/liquidity"},{"claim":"Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying real-time ZEC liquidity across DeFi protocols","Monitoring Zcash liquidity depth for trading decisions","Integrating ZEC liquidity data into automated trading bots","Building dashboards that track DeFi liquidity for privacy coins"],"bestFor":["Agents or bots needing on-demand ZEC liquidity data without API key management","Developers who want pay-per-call pricing with no subscription commitment","Applications settling micropayments in USDC on Base"],"notFor":["Users needing detailed API documentation or guaranteed SLAs before integrating","Applications requiring bulk historical liquidity data at high throughput (no documented batch endpoint)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:17:47.895Z"},"updatedAt":"2026-04-23T20:01:28.459Z"}}