{"id":"88f877b2-764f-41ba-acb2-f48c23546723","shortId":"cXhmxj","kind":"x402","title":"Query Uniswap DeFi positions via x402 micropayment on Base for $0.02 per request.","tagline":"Query Uniswap DeFi positions via x402 micropayment on Base for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to Uniswap DeFi position data through a pay-per-call x402 protocol. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum cost of $0.02 per request (20,000 base units at 6 decimals). No API keys, rate limits, or upfront commitments are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe provider (lowpaymentfee.com) hosts a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3, and utility services, all priced at $0.02 per request on the Base network. The specific endpoint `/api/v1/defi/uniswap/positions` is categorized under Finance & Web3 and is intended to return Uniswap liquidity position data, though detailed documentation on request parameters and response schema is not available from the crawled material. The endpoint is live and returns a proper 402 challenge when called without payment.\n\nBecause the provider's docs, pricing, and README pages all resolve to a minimal \"Connect wallet\" stub, there is no published documentation describing the request body format, required fields, or response structure for this endpoint. Callers will need to experiment or contact the provider to learn the expected POST body schema.","tags":[],"capabilities":["x402-payment","uniswap-positions","defi-data","base-network","usdc-settlement","pay-per-call","no-api-key"],"categories":["defi","finance","web3"],"synonyms":["uniswap liquidity positions","DeFi position tracker","uniswap LP data","liquidity pool positions","uniswap v3 positions","defi portfolio API"],"warnings":["No API documentation available — docs, pricing, and README pages all return only a 'Connect wallet' stub.","Request body schema is unknown; the example_request_json is speculative based on common DeFi API patterns.","Response schema is completely undocumented; example_response_json is null.","This specific endpoint (/api/v1/defi/uniswap/positions) is not listed on the provider's homepage catalog, raising questions about its status."],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/uniswap/positions","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/uniswap/positions","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge with clear pricing and asset info. However, there is no published documentation, no OpenAPI schema, no request/response examples, and the docs/pricing/README pages are all empty stubs. The request body and response format are entirely unknown, making this effectively a stub 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'0.02':11,24,70,129 '000':74 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':64 '20':73 '402':178 '6':78 'DeFi position tracker' 'accept':48 'access':32 'ai/ml':120 'analyt':119 'api':81,116 'attach':92 'avail':165 'base':9,22,59,75,134 'base-network' 'bodi':209,233 'broad':109 'call':43,115,181 'caller':90,219 'catalog':110 'categor':141 'challeng':179 'commit':87 'connect':198 'contact':225 'contract':63 'cost':68 'crawl':168 'data':37,118,153 'decim':79 'defi':3,16,35 'defi portfolio API' 'defi-data' 'describ':206 'detail':155 'doc':188 'document':156,205 'endpoint':28,47,138,171,218 'expect':231 'experi':223 'field':212 'financ':143 'finance/web3':122 'format':210 'header':97 'host':107 'infer':121 'intend':147 'json':53 'key':82 'learn':229 'limit':84 'liquid':151 'liquidity pool positions' 'live':173 'lowpaymentfee.com':30,106 'materi':169 'maximum':67 'micropay':7,20 'minim':197 'need':221 'network':60,135 'no-api-key' 'page':192 'paramet':159 'pay':41,113 'pay-per-cal':40,112 'pay-per-call' 'payment':54,96,102,183 'per':12,25,42,71,114,130 'posit':4,17,36,152 'post':49,232 'price':127,189 'proof':103 'proper':177 'protocol':45 'provid':31,105,186,227 'publish':204 'queri':1,14 'rate':83 'readm':191 'request':13,26,50,72,131,158,208 'requir':89,211 'resolv':194 'respons':161,214 'return':52,149,175 'schema':162,234 'servic':125 'settl':56 'simpli':91 'span':117 'specif':137 'structur':215 'stub':200 'though':154 'uniswap':2,15,34,150 'uniswap LP data' 'uniswap liquidity positions' 'uniswap v3 positions' 'uniswap-positions' 'unit':76 'upfront':86 'usdc':62 'usdc-settlement' 'use':61 'util':124 'valid':100 'via':5,18 'wallet':199 'web3':144 'without':182 'x':95 'x-payment':94 'x402':6,19,44,101 'x402-payment'","prices":[{"id":"8dedca52-67a3-4de2-a4fa-52b247d3a10c","listingId":"88f877b2-764f-41ba-acb2-f48c23546723","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/uniswap/positions","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T12:29:46.931Z"}],"sources":[{"listingId":"88f877b2-764f-41ba-acb2-f48c23546723","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/uniswap/positions","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T12:29:46.931Z","lastSeenAt":"2026-04-22T18:32:55.522Z"}],"details":{"listingId":"88f877b2-764f-41ba-acb2-f48c23546723","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/uniswap/positions \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -d '{\"address\": \"0xYourWalletAddress\"}'","exampleRequest":{"address":"0x1234567890abcdef1234567890abcdef12345678"},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a 402 challenge with x402Version 1, accepting USDC on Base network with maxAmountRequired of 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/defi/uniswap/positions"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/defi/uniswap/positions"},{"claim":"Provider advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Provider hosts multiple API categories including Finance & Web3, Data & Analytics, AI & ML, and Infrastructure","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieve current Uniswap liquidity positions for a wallet or pool","Monitor DeFi portfolio positions programmatically","Feed Uniswap position data into trading bots or analytics dashboards","Aggregate LP position data across Uniswap pools"],"bestFor":["Agents or bots needing on-demand Uniswap position lookups without API key management","Developers building DeFi dashboards who want simple pay-per-call pricing","Automated workflows that need low-friction access to Uniswap LP data"],"notFor":["High-volume bulk data extraction (pay-per-call at $0.02 adds up quickly)","Users who need detailed API documentation before integrating — docs are currently minimal","Non-Uniswap DeFi protocols"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.474Z"},"updatedAt":"2026-04-22T18:32:55.522Z"}}