{"id":"e7d2d340-0569-40f6-b277-a1109396a8cd","shortId":"HpVTg7","kind":"x402","title":"NEO liquidity data via pay-per-call x402 on Base (USDC, $0.02/request)","tagline":"NEO liquidity data via pay-per-call x402 on Base (USDC, $0.02/request)","description":"This endpoint provides DeFi liquidity data for the NEO token, accessible through the x402 payment protocol. It is part of a broader API platform at lowpaymentfee.com that offers data & analytics, AI/ML inference, finance/Web3, and infrastructure endpoints — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nPayment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge advertises a maxAmountRequired of 20,000 base units, which equals $0.02 given USDC's 6 decimals. The endpoint accepts POST requests and returns application/json. No request body schema or response schema is documented beyond the x402 challenge's outputSchema stub.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no example requests or responses, and no detailed description of what fields the liquidity endpoint returns. Users should expect to experiment or contact the provider for specifics on the response payload.","tags":[],"capabilities":["defi-liquidity-data","neo-token","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["defi","finance"],"synonyms":["NEO liquidity","DeFi liquidity API","NEO DeFi data","crypto liquidity endpoint","NEO pool data","x402 DeFi API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content","No request body schema or response schema documented; response payload structure is unknown","The endpoint path suggests NEO DeFi liquidity data but no details confirm what fields or protocols are covered","This specific endpoint (/defi/NEO/liquidity) is not listed on the provider's homepage among advertised APIs"],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/NEO/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/NEO/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The actual data returned by the liquidity endpoint is entirely 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'0.02':13,27,68,106 '000':101 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':92 '20':100 '6':110 'DeFi liquidity API' 'NEO DeFi data' 'NEO liquidity' 'NEO pool data' 'accept':114 'access':39 'advertis':96 'ai/ml':59 'analyt':58 'api':51,73,145 'application/json':119 'base':11,25,87,102 'base-network' 'beyond':129 'bodi':122 'broader':50 'call':8,22 'challeng':95,132 'commit':80 'connect':154 'contact':188 'content':160 'contract':91 'crypto liquidity endpoint' 'data':3,17,34,57 'decim':111 'defi':32 'defi-liquidity-data' 'descript':174 'detail':173 'doc':144 'document':128,136 'endpoint':30,64,113,180 'equal':105 'exampl':167 'expect':184 'experi':186 'extrem':141 'field':177 'finance/web3':61 'given':107 'infer':60 'infrastructur':63 'key':74 'limit':77 'liquid':2,16,33,179 'lowpaymentfee.com':54 'maxamountrequir':98 'neo':1,15,37 'neo-token' 'network':88 'no-api-key' 'offer':56 'openapi':164 'outputschema':134 'page':149 'part':47 'pay':6,20 'pay-per-cal':5,19 'pay-per-request' 'payload':196 'payment':43,82 'per':7,21,69 'platform':52 'post':115 'price':66,146 'prompt':156 'protocol':44 'provid':31,190 'rate':76 'readm':148 'render':151 'request':70,116,121,168 'requir':81 'respons':125,170,195 'return':118,181 'schema':123,126 'settl':84 'site':139 'spars':142 'spec':165 'specif':192 'stub':135 'token':38 'unit':103 'usdc':12,26,90,108 'usdc-settlement' 'use':89 'user':182 'via':4,18 'wallet':155 'x402':9,23,42,94,131 'x402 DeFi API' 'x402-payment'","prices":[{"id":"e2f8a617-92cf-41c9-a9ee-118bd9ef3101","listingId":"e7d2d340-0569-40f6-b277-a1109396a8cd","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/NEO/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":"2026-04-18T18:33:55.039Z"}],"sources":[{"listingId":"e7d2d340-0569-40f6-b277-a1109396a8cd","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/NEO/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:55.039Z","lastSeenAt":"2026-04-23T00:31:00.002Z"}],"details":{"listingId":"e7d2d340-0569-40f6-b277-a1109396a8cd","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/NEO/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 x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/defi/NEO/liquidity"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/defi/NEO/liquidity"},{"claim":"All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying real-time liquidity information for the NEO token across DeFi protocols","Building trading bots that need on-demand NEO liquidity snapshots","Monitoring NEO DeFi pool depth for portfolio management dashboards"],"bestFor":["Agents or apps needing on-demand NEO liquidity data without API key management","Developers who prefer pay-per-call crypto-native billing on Base","Quick prototyping where low per-request cost and zero signup friction matter"],"notFor":["Users who need detailed documentation or guaranteed SLA before integrating","High-frequency consumers who need sub-cent pricing or bulk discounts","Anyone requiring liquidity data for tokens other than NEO from this specific endpoint"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:18:41.476Z"},"updatedAt":"2026-04-23T00:31:00.002Z"}}