{"id":"511d9077-3692-46c6-95df-7fe4b6071215","shortId":"7VnBNX","kind":"x402","title":"SNX liquidity data via x402 micropayment on Base network, $0.02 per request.","tagline":"SNX liquidity data via x402 micropayment on Base network, $0.02 per request.","description":"This endpoint provides DeFi liquidity data for the SNX (Synthetix) token, accessible through the x402 payment protocol on the Base network. Each request costs $0.02 (20,000 base units of USDC with 6 decimals) and requires no API keys, rate limits, or prior registration — payment is handled inline via the x402 `X-PAYMENT` header.\n\nThe endpoint is part of a broader API platform at lowpaymentfee.com that offers data & analytics, AI/ML inference, finance/Web3, and infrastructure utility endpoints, all priced uniformly at $0.02 per call. The SNX liquidity endpoint specifically falls under the Finance & Web3 category, though it is not explicitly listed on the landing page among the showcased endpoints. The x402 challenge confirms it is live and accepts POST requests, settling payments in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what fields the liquidity endpoint returns. Users should expect to experiment with POST request bodies to discover the input format, or contact the provider for documentation.","tags":[],"capabilities":["defi-liquidity-data","snx-synthetix","x402-micropayment","base-network","usdc-settlement","no-api-key","pay-per-request"],"categories":["defi","finance"],"synonyms":["SNX liquidity","Synthetix liquidity","DeFi liquidity API","SNX pool data","crypto liquidity endpoint","x402 DeFi API","Base network DeFi"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or request/response schema provided; input format is unknown.","This specific endpoint (/api/v1/defi/SNX/liquidity) is not listed among the provider's showcased APIs, raising questions about its support status.","Response format and fields are entirely undocumented; integration requires experimentation."],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/SNX/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/SNX/liquidity","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and confirms pricing and settlement details, but there is zero documentation on request/response schemas, no OpenAPI spec, and the endpoint is not even listed on the provider's landing page. Effectively a stub listing with only payment metadata 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'000':51 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':150 '20':50 '6':57 'Base network DeFi' 'DeFi liquidity API' 'SNX liquidity' 'SNX pool data' 'Synthetix liquidity' 'accept':142 'access':36 'ai/ml':95 'among':130 'analyt':94 'api':62,87,159 'base':8,20,44,52,152 'base-network' 'bodi':202 'broader':86 'call':108 'categori':119 'challeng':136 'confirm':137 'connect':168 'contact':209 'contract':149 'cost':48 'crypto liquidity endpoint' 'data':3,15,30,93 'decim':58 'defi':28 'defi-liquidity-data' 'descript':186 'detail':175 'discov':204 'doc':158 'document':153,213 'endpoint':26,81,101,112,133,192 'exampl':183 'expect':196 'experi':198 'explicit':124 'extrem':155 'fall':114 'field':189 'financ':117 'finance/web3':97 'format':207 'handl':71 'header':79 'infer':96 'infrastructur':99 'inlin':72 'input':206 'key':63 'land':128 'limit':65 'liquid':2,14,29,111,191 'list':125 'live':140 'lowpaymentfee.com':90 'micropay':6,18 'network':9,21,45 'no-api-key' 'offer':92 'openapi':179 'page':129,163 'part':83 'pay-per-request' 'payment':40,69,78,146 'per':11,23,107 'platform':88 'post':143,200 'price':103,160 'prior':67 'prompt':170 'protocol':41 'provid':27,211 'rate':64 'readm':162 'registr':68 'render':165 'request':12,24,47,144,201 'request/response':182 'requir':60 'return':193 'schema':180 'settl':145 'showcas':132 'snx':1,13,33,110 'snx-synthetix' 'spars':156 'specif':113 'synthetix':34 'technic':174 'though':120 'token':35 'uniform':104 'unit':53 'usdc':55,148 'usdc-settlement' 'user':194 'util':100 'via':4,16,73 'wallet':169 'web3':118 'x':77 'x-payment':76 'x402':5,17,39,75,135 'x402 DeFi API' 'x402-micropayment'","prices":[{"id":"7176ad9d-ec1f-4023-b79d-9d0dee475d63","listingId":"511d9077-3692-46c6-95df-7fe4b6071215","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/SNX/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":"2026-04-18T18:34:34.107Z"}],"sources":[{"listingId":"511d9077-3692-46c6-95df-7fe4b6071215","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/SNX/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:34.107Z","lastSeenAt":"2026-04-22T23:00:50.031Z"}],"details":{"listingId":"511d9077-3692-46c6-95df-7fe4b6071215","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/SNX/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 HTTP 402 with x402 challenge, confirming it is live on Base network with USDC settlement.","source_url":"https://lowpaymentfee.com/api/v1/defi/SNX/liquidity"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/defi/SNX/liquidity"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02.","source_url":"https://lowpaymentfee.com/api/v1/defi/SNX/liquidity"}],"useCases":["Querying current SNX liquidity pool metrics for trading decisions","Integrating SNX liquidity data into DeFi dashboards or bots","Agent-driven portfolio analysis that needs on-demand liquidity snapshots"],"bestFor":["Developers building DeFi analytics tools that need SNX liquidity data","AI agents that can pay per-call via x402 without managing API keys","Low-volume or sporadic access patterns where $0.02/request is cost-effective"],"notFor":["High-frequency trading requiring sub-second latency and bulk pricing","Users who need comprehensive documentation or guaranteed SLA before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:51:06.83Z"},"updatedAt":"2026-04-22T23:00:50.031Z"}}