{"id":"20087eda-846b-4893-b6ca-4d3a509e674f","shortId":"jGuHup","kind":"x402","title":"XTZ liquidity data via x402 micropayment on Base for $0.02 per request","tagline":"XTZ liquidity data via x402 micropayment on Base for $0.02 per request","description":"This endpoint at lowpaymentfee.com provides DeFi liquidity data for XTZ (Tezos) via a pay-per-call x402 protocol. Each request costs $0.02, paid in USDC on the Base network. No API keys or accounts are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the data.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers dozens of APIs across categories including data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all at a flat $0.02 per request. The specific endpoint `/api/v1/defi/XTZ/liquidity` is not listed on the site's main landing page (which shows finance, crypto, AI, and utility endpoints), so its exact response schema and data source are undocumented. The x402 challenge confirms it is live and accepting POST requests, settling payments to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no example request/response, and no description of what fields the liquidity endpoint returns. Callers should expect a JSON response but will need to experiment to determine the exact schema.","tags":[],"capabilities":["defi-liquidity-data","xtz-tezos","x402-micropayment","usdc-base-settlement","pay-per-request","no-api-key"],"categories":["defi","finance"],"synonyms":["Tezos liquidity","XTZ DeFi data","XTZ liquidity pool","Tezos DeFi API","crypto liquidity endpoint","x402 DeFi API"],"warnings":["This specific endpoint (/api/v1/defi/XTZ/liquidity) is not listed on the provider's homepage — it may be undocumented, experimental, or deprecated","No documentation exists beyond a 'Connect wallet' prompt on /docs, /pricing, /api, and /README pages","No request or response schema is available; callers must discover the API shape by experimentation","The platform lists many generic API categories (AI, analytics, utils) all at $0.02 — unclear whether these are production-quality data sources"],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/XTZ/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/XTZ/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 confirms pricing and settlement details, but there is zero documentation on request/response schema, no OpenAPI spec, and the specific /defi/XTZ/liquidity endpoint is not even listed on the provider's own landing page. Effectively a stub 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'/api/v1/defi/xtz/liquidity':115 '/docs':171 '/pricing':172 '/readme':175 '0.02':10,22,47,109 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':159 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':163 'Tezos DeFi API' 'Tezos liquidity' 'XTZ DeFi data' 'XTZ liquidity pool' 'accept':152 'access':77 'account':59 'across':94 'address':158 'ai':130 'ai/ml':99 'analyt':98 'api':56,93 'attach':64 'base':8,20,53,165 'broader':86 'call':41 'caller':62,206 'categori':95 'challeng':146 'confirm':147 'connect':181 'content':187 'contract':162 'cost':46 'crypto':129 'crypto liquidity endpoint' 'data':3,15,32,79,97,140 'defi':30 'defi-liquidity-data' 'descript':198 'determin':218 'document':166 'dozen':91 'endpoint':26,81,114,133,204 'exact':136,220 'exampl':194 'expect':208 'experi':216 'extrem':168 'field':201 'financ':128 'finance/web3':101 'flat':108 'header':69 'includ':96 'infer':100 'infrastructur':103 'json':210 'key':57 'land':124 'liquid':2,14,31,203 'list':118 'live':150 'lowpaymentfee.com':28,88 'main':123 'micropay':6,18 'need':214 'network':54 'no-api-key' 'offer':90 'openapi':191 'page':125,176 'paid':48 'part':83 'pay':39 'pay-per-cal':38 'pay-per-request' 'payment':68,74,156 'per':11,23,40,110 'platform':87 'post':153 'prompt':183 'proof':75 'protocol':43 'provid':29 'render':178 'request':12,24,45,111,154 'request/response':195 'requir':61 'respons':137,211 'return':205 'schema':138,221 'settl':155 'show':127 'simpli':63 'site':121 'sourc':141 'spars':169 'spec':192 'specif':113 'tezo':35 'undocu':143 'usdc':50,161 'usdc-base-settlement' 'use':160 'util':104,132 'valid':72 'via':4,16,36 'wallet':182 'x':67 'x-payment':66 'x402':5,17,42,73,145 'x402 DeFi API' 'x402-micropayment' 'xtz':1,13,34 'xtz-tezos'","prices":[{"id":"16840549-3d8f-4f72-a206-6be6d34308e2","listingId":"20087eda-846b-4893-b6ca-4d3a509e674f","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/XTZ/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":"2026-04-18T18:35:27.090Z"}],"sources":[{"listingId":"20087eda-846b-4893-b6ca-4d3a509e674f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/XTZ/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:35:27.090Z","lastSeenAt":"2026-04-22T21:30:27.125Z"}],"details":{"listingId":"20087eda-846b-4893-b6ca-4d3a509e674f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/XTZ/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 endpoint returns HTTP 402 with x402 version 1 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/defi/XTZ/liquidity"},{"claim":"Payment is in USDC on Base network, maxAmountRequired 20000 base units ($0.02)","source_url":"https://lowpaymentfee.com/api/v1/defi/XTZ/liquidity"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/defi/XTZ/liquidity"}],"useCases":["Querying current XTZ liquidity pool data for DeFi dashboards","Automated trading bots needing Tezos liquidity snapshots","Portfolio analytics tools integrating cross-chain liquidity metrics"],"bestFor":["Agents or bots that need on-demand XTZ liquidity data without managing API keys","Developers prototyping DeFi tools who want instant pay-per-call access","Low-volume consumers who prefer micropayments over subscription plans"],"notFor":["High-frequency trading requiring sub-second latency and guaranteed SLAs","Users who need detailed documentation or schema guarantees before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:50.703Z"},"updatedAt":"2026-04-22T21:30:27.125Z"}}