{"id":"36278fc0-22da-4ba9-9747-b24969c00276","shortId":"AP3VeK","kind":"x402","title":"TON liquidity data via x402 micropayment on Base — $0.02 per request, no API key needed.","tagline":"TON liquidity data via x402 micropayment on Base — $0.02 per request, no API key needed.","description":"This endpoint at lowpaymentfee.com provides DeFi liquidity data for the TON blockchain. It is part of a broader platform offering data, analytics, AI, finance, and infrastructure APIs, all gated behind the x402 payment protocol. Each call costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.\n\nThe endpoint accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, accepting payments to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base. The maxAmountRequired of 20000 base units (USDC has 6 decimals) equals $0.02 per request.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the liquidity endpoint accepts or returns. The endpoint's specific input parameters and output format must be discovered experimentally. Given the DeFi/TON context, it likely returns liquidity pool data (TVL, pool addresses, token pairs, volumes), but this is inference, not confirmed.","tags":[],"capabilities":["defi-liquidity-data","ton-blockchain","x402-payment","usdc-base-network","micropayment-api","no-api-key"],"categories":["defi","finance","crypto"],"synonyms":["TON liquidity","TON DeFi","TON pool data","TON TVL","x402 DeFi API","crypto liquidity endpoint","TON blockchain liquidity"],"warnings":["No API documentation available — docs, pricing, and README pages all render only a 'Connect wallet' prompt with no content.","No OpenAPI or JSON schema for request or response bodies; input parameters are unknown.","Endpoint purpose (TON liquidity) is inferred from the URL path only; no authoritative description exists.","The broader platform lists many endpoints across diverse categories (AI, geocoding, finance) all at $0.02 — quality and depth of each is unverified."],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/TON/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/TON/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 pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and all documentation pages returned only a wallet-connect prompt. The endpoint's input parameters and output format are entirely 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'0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':105 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':109 '20000':115 '6':120 'TON DeFi' 'TON TVL' 'TON blockchain liquidity' 'TON liquidity' 'TON pool data' 'accept':87,101,166 'address':104,194 'ai':53 'analyt':52 'api':13,28,57,76,133 'base':8,23,73,111,116 'behind':60 'blockchain':42 'broader':48 'call':66 'challeng':95 'confirm':96,203 'connect':142 'content':148 'context':185 'contract':108 'cost':67 'crawl':131 'crypto liquidity endpoint' 'data':3,18,38,51,191 'decim':121 'defi':36 'defi-liquidity-data' 'defi/ton':184 'descript':159 'discov':180 'doc':132 'document':126 'endpoint':32,86,98,165,170 'equal':122 'exampl':156 'experiment':181 'extrem':128 'field':162 'financ':54 'format':177 'gate':59 'given':182 'infer':201 'infrastructur':56 'input':173 'json':92 'key':14,29,77 'like':187 'limit':80 'liquid':2,17,37,164,189 'live':100 'lowpaymentfee.com':34 'maxamountrequir':113 'micropay':6,21 'micropayment-api' 'must':178 'need':15,30 'network':74 'no-api-key' 'offer':50 'openapi':152 'output':176 'page':137 'pair':196 'paramet':174 'part':45 'payment':63,102 'per':10,25,124 'platform':49 'pool':190,193 'post':88 'price':134 'prompt':144 'protocol':64 'provid':35 'rate':79 'readm':136 'request':11,26,89,125 'request/response':155 'requir':84 'return':91,139,168,188 'schema':153 'spars':129 'specif':172 'subscript':83 'token':195 'ton':1,16,41 'ton-blockchain' 'tvl':192 'unit':117 'usdc':70,107,118 'usdc-base-network' 'use':106 'via':4,19 'volum':197 'wallet':143 'x402':5,20,62,94 'x402 DeFi API' 'x402-payment'","prices":[{"id":"1c851020-49ea-4b06-ac07-08d8a0f9c87b","listingId":"36278fc0-22da-4ba9-9747-b24969c00276","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/TON/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":"2026-04-18T18:37:24.572Z"}],"sources":[{"listingId":"36278fc0-22da-4ba9-9747-b24969c00276","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/TON/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:24.572Z","lastSeenAt":"2026-04-22T21:30:32.311Z"}],"details":{"listingId":"36278fc0-22da-4ba9-9747-b24969c00276","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/TON/liquidity \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with an x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/defi/TON/liquidity"},{"claim":"maxAmountRequired is 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/defi/TON/liquidity"},{"claim":"Platform advertises $0.02/request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (docs, API, pricing, README) all returned only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Querying real-time TON liquidity pool data for trading bots","Monitoring TON DeFi TVL and pool metrics","Integrating TON liquidity information into portfolio dashboards","Agent-driven DeFi research across multiple chains"],"bestFor":["Developers needing on-demand TON liquidity data without managing API keys","AI agents that can settle x402 micropayments on Base","Low-volume or sporadic DeFi data consumers who prefer pay-per-call pricing"],"notFor":["High-frequency trading requiring sub-second latency guarantees (no SLA documented)","Users who need detailed API documentation or schema before integrating","Anyone without a Base-compatible USDC wallet for x402 payments"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:45.095Z"},"updatedAt":"2026-04-22T21:30:32.311Z"}}