{"id":"2fb33ce7-0ff2-42ad-a2f3-1eb2718a4632","shortId":"5NwRUw","kind":"x402","title":"TRX liquidity data via x402 micropayment on Base network, $0.02 per request.","tagline":"TRX liquidity data via x402 micropayment on Base network, $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides DeFi liquidity data for TRX (Tron) via a pay-per-call x402 protocol. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The caller includes an X-PAYMENT header with a signed payment to unlock the response.\n\nThe endpoint is part of a broader platform offering dozens of APIs across data analytics, AI/ML inference, finance, crypto, and utility categories, all priced uniformly at $0.02 per request. The specific path `/api/v1/defi/TRX/liquidity` is not listed on the provider's landing page among the showcased endpoints, but the x402 challenge is live and returns a valid 402 with payment terms, confirming it is operational.\n\nPayment settles to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base. The maxAmountRequired is 20000 base units, which equals $0.02 (USDC uses 6 decimals). The response MIME type is application/json. No OpenAPI schema or detailed documentation for this specific endpoint was found in the crawl.","tags":[],"capabilities":["defi-liquidity-data","trx-liquidity","x402-micropayment","base-network-usdc","pay-per-request","no-api-key"],"categories":["defi","finance"],"synonyms":["TRX liquidity","Tron liquidity pool","DeFi liquidity API","TRX DeFi data","crypto liquidity endpoint","Tron pool data"],"warnings":["No OpenAPI or request/response schema available for this endpoint.","The /api/v1/defi/TRX/liquidity path is not listed among the provider's advertised APIs on the landing page — it may be undocumented or experimental.","Documentation pages (/docs, /api, /pricing, /README) returned only a 'Connect wallet' prompt with no usable content.","Response format and fields are entirely unknown; callers must discover the schema empirically."],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/TRX/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/TRX/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 payment details, but there is no OpenAPI schema, no request/response examples, and no documentation for this specific endpoint. The endpoint path is not even listed on the provider's own landing page, making it unclear what data it actually 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'0.02':10,22,47,106,163 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':148 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':152 '20000':158 '402':136 '6':166 'DeFi liquidity API' 'TRX DeFi data' 'TRX liquidity' 'Tron liquidity pool' 'Tron pool data' 'across':92 'address':147 'ai/ml':95 'among':122 'analyt':94 'api':55,91 'application/json':173 'base':8,20,52,154,159 'base-network-usdc' 'broader':86 'call':41 'caller':65 'categori':101 'challeng':129 'confirm':140 'contract':151 'cost':46 'crawl':188 'crypto':98 'crypto liquidity endpoint' 'data':3,15,32,93 'decim':167 'defi':30 'defi-liquidity-data' 'detail':178 'document':179 'dozen':89 'endpoint':26,81,125,183 'equal':162 'financ':97 'found':185 'header':71 'includ':66 'infer':96 'key':56 'land':120 'limit':59 'liquid':2,14,31 'list':115 'live':131 'lowpaymentfee.com':28 'maxamountrequir':156 'micropay':6,18 'mime':170 'network':9,21,53 'no-api-key' 'offer':88 'openapi':175 'oper':143 'page':121 'part':83 'path':111 'pay':39 'pay-per-cal':38 'pay-per-request' 'payment':70,75,138,144 'per':11,23,40,107 'platform':87 'price':103 'protocol':43 'provid':29,118 'rate':58 'request':12,24,45,108 'requir':63 'respons':79,169 'return':133 'schema':176 'settl':145 'showcas':124 'sign':74 'specif':110,182 'subscript':62 'term':139 'tron':35 'trx':1,13,34 'trx-liquidity' 'type':171 'uniform':104 'unit':160 'unlock':77 'usdc':49,150,164 'use':165 'util':100 'valid':135 'via':4,16,36 'x':69 'x-payment':68 'x402':5,17,42,128 'x402-micropayment'","prices":[{"id":"53c3ec71-8fd4-4861-8823-fb93e5c77854","listingId":"2fb33ce7-0ff2-42ad-a2f3-1eb2718a4632","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/TRX/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":"2026-04-18T18:34:15.548Z"}],"sources":[{"listingId":"2fb33ce7-0ff2-42ad-a2f3-1eb2718a4632","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/TRX/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:15.548Z","lastSeenAt":"2026-04-23T00:31:01.798Z"}],"details":{"listingId":"2fb33ce7-0ff2-42ad-a2f3-1eb2718a4632","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/TRX/liquidity \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\"","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/TRX/liquidity"},{"claim":"USDC contract address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/defi/TRX/liquidity"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying real-time TRX liquidity pool data for DeFi dashboards","Automated trading bots needing on-demand TRX liquidity snapshots","Research and analytics on Tron DeFi liquidity trends","Agent-driven portfolio monitoring that pays per call with no subscription"],"bestFor":["AI agents or bots that need on-demand DeFi liquidity data without managing API keys","Developers prototyping DeFi tools who want instant access with micropayments","Low-volume consumers who prefer pay-per-call over monthly subscriptions"],"notFor":["High-frequency trading requiring sub-second latency and bulk pricing","Users who need comprehensive multi-chain liquidity aggregation in a single call","Anyone without a Base-network USDC wallet for x402 payments"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:49:52.475Z"},"updatedAt":"2026-04-23T00:31:01.798Z"}}