{"id":"aadf1244-f766-4d25-8b35-b60bc0a41369","shortId":"wQ8Jrs","kind":"x402","title":"HBAR DeFi liquidity data via pay-per-call x402 on Base (USDC, $0.02/request)","tagline":"HBAR DeFi liquidity data via pay-per-call x402 on Base (USDC, $0.02/request)","description":"This endpoint provides HBAR (Hedera) DeFi liquidity data through a pay-per-request model using the x402 protocol. It is hosted at lowpaymentfee.com, a platform offering a broad catalog of data, AI, finance, and utility APIs — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/defi/HBAR/liquidity` accepts POST requests and returns JSON. Based on the x402 challenge, the maximum amount required per call is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme with no API keys, no rate limits, and no upfront commitments — the caller simply includes an X-PAYMENT header with a valid payment proof.\n\nDocumentation beyond the landing page is extremely sparse: the /docs, /pricing, /api, and /README pages all returned only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed description of what fields the liquidity response contains. The endpoint is confirmed live (402 challenge returned), but the actual data shape and coverage are unknown.","tags":[],"capabilities":["defi-liquidity-data","hbar-hedera","x402-payment","usdc-base","pay-per-request","json-api"],"categories":["defi","finance"],"synonyms":["HBAR liquidity","Hedera DeFi","DeFi liquidity API","HBAR pool data","Hedera liquidity pools","crypto liquidity endpoint"],"warnings":["No documentation available — /docs, /pricing, /api, and /README all return only a 'Connect wallet' prompt with no content","No OpenAPI or JSON schema describing request parameters or response fields","The endpoint appears on a platform with a very broad, generic API catalog; data provenance and reliability are unclear","This specific /defi/HBAR/liquidity path is not listed on the landing page's catalog, raising questions about its status"],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/HBAR/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/HBAR/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages returned only a wallet-connect stub. The actual data shape and coverage of the HBAR liquidity response are entirely 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'/api/v1/defi/hbar/liquidity':85 '/docs':164 '/pricing':165 '/readme':168 '/request':15,30 '0.02':14,29,71,116 '000':105 '0x8335':110 '20':104 '2913':111 '402':205 '6':120 'DeFi liquidity API' 'HBAR liquidity' 'HBAR pool data' 'Hedera DeFi' 'Hedera liquidity pools' 'accept':86 'actual':210 'ai':63 'amount':99 'api':67,132 'base':12,27,80,92,106,113 'beyond':156 'broad':59 'call':9,24,102 'caller':142 'catalog':60 'challeng':96,206 'commit':140 'confirm':203 'connect':174 'contain':199 'content':180 'coverag':214 'crypto liquidity endpoint' 'data':4,19,38,62,211 'decim':121 'defi':2,17,36 'defi-liquidity-data' 'descript':192 'detail':191 'document':155 'endpoint':32,84,201 'equal':115 'exact':128 'exampl':188 'extrem':161 'field':195 'financ':64 'given':117 'hbar':1,16,34 'hbar-hedera' 'header':149 'hedera':35 'host':52 'includ':144 'json':91 'json-api' 'key':133 'land':158 'limit':136 'liquid':3,18,37,197 'live':204 'lowpaymentfee.com':54 'made':124 'maximum':98 'model':45 'network':81 'offer':57 'openapi':184 'page':159,169 'pay':7,22,42 'pay-per-cal':6,21 'pay-per-request':41 'payment':122,148,153 'per':8,23,43,72,101 'platform':56 'post':87 'price':69 'prompt':176 'proof':154 'protocol':49 'provid':33 'rate':135 'request':44,73,88 'request/response':187 'requir':100 'respons':198 'return':90,171,207 'schema':185 'scheme':129 'settl':75 'shape':212 'simpli':143 'spars':162 'specif':83 'unit':107 'unknown':216 'upfront':139 'usdc':13,28,77,109,118 'usdc-base' 'use':46 'util':66 'valid':152 'via':5,20,125 'wallet':175 'x':147 'x-payment':146 'x402':10,25,48,95,127 'x402-payment'","prices":[{"id":"91ab57e9-cc03-4587-8c67-36104f7fb66d","listingId":"aadf1244-f766-4d25-8b35-b60bc0a41369","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/HBAR/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":"2026-04-18T18:34:14.317Z"}],"sources":[{"listingId":"aadf1244-f766-4d25-8b35-b60bc0a41369","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/HBAR/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:14.317Z","lastSeenAt":"2026-04-23T00:31:01.717Z"}],"details":{"listingId":"aadf1244-f766-4d25-8b35-b60bc0a41369","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/HBAR/liquidity \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/defi/HBAR/liquidity"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) contain only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Querying current HBAR DeFi liquidity pool metrics for trading decisions","Integrating HBAR liquidity data into a DeFi aggregator or dashboard","Automated agents monitoring Hedera ecosystem liquidity in real time"],"bestFor":["Developers needing on-demand HBAR DeFi liquidity snapshots without API key management","Agents or bots that can pay per call via x402 on Base","Low-volume or sporadic queries where $0.02/request is cost-effective"],"notFor":["High-frequency trading requiring sub-second latency and bulk data (no documented batch endpoint)","Users who need detailed documentation or guaranteed SLA before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:50:39.559Z"},"updatedAt":"2026-04-23T00:31:01.717Z"}}