{"id":"537c81ea-4ca2-409e-8eae-645b84c0a40a","shortId":"aZmV8P","kind":"x402","title":"THETA liquidity data via x402 micropayment on Base network for $0.02/request","tagline":"THETA liquidity data via x402 micropayment on Base network for $0.02/request","description":"This endpoint provides DeFi liquidity data for the THETA token, accessible through the x402 payment protocol on the Base network. It is part of a broader suite of APIs offered by lowpaymentfee.com covering data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. Each request costs $0.02 in USDC, paid per-call with no API keys, rate limits, or subscriptions required.\n\nThe endpoint accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, settling payments in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on the Base L2 network. The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. Payment is made via the x402 X-PAYMENT header, with a timeout of 300 seconds.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed description of what fields the THETA liquidity endpoint returns. The endpoint's specific functionality (e.g., pool TVL, depth, volume) must be inferred from the URL path alone.","tags":[],"capabilities":["defi-liquidity-data","theta-token","x402-micropayment","usdc-payment","base-network","per-request-pricing","no-api-key","json-response"],"categories":["defi","finance"],"synonyms":["THETA liquidity","DeFi liquidity API","THETA pool data","crypto liquidity endpoint","THETA DeFi data","token liquidity"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content","No OpenAPI or JSON schema describing request parameters or response fields","Endpoint functionality (what liquidity data fields are returned) is inferred solely from the URL path","The broader lowpaymentfee.com site lists many diverse API categories; unclear if all are fully implemented or stubs"],"endpointUrl":"https://lowpaymentfee.com/api/v1/defi/THETA/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/THETA/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 pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The specific data returned by this endpoint is entirely 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'0.02':11,23,69,127 '000':118 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':106 '20':117 '300':142 '6':123 'DeFi liquidity API' 'THETA DeFi data' 'THETA liquidity' 'THETA pool data' 'accept':87 'access':35 'ai/ml':60 'alon':203 'amount':114 'analyt':59 'api':53,78,150 'base':8,20,43,109,119 'base-network' 'broader':50 'call':75 'challeng':95 'confirm':96 'connect':159 'content':165 'contract':105 'cost':68 'cover':57 'crypto liquidity endpoint' 'data':3,15,30,58 'decim':124 'defi':28 'defi-liquidity-data' 'depth':194 'descript':177 'detail':176 'doc':149 'document':144 'e.g':191 'endpoint':26,86,98,184,187 'equal':126 'exampl':173 'extrem':146 'field':180 'finance/web3':62 'function':190 'header':137 'infer':61,198 'infrastructur':64 'json':92 'json-response' 'key':79 'l2':110 'limit':81 'liquid':2,14,29,183 'live':100 'lowpaymentfee.com':56 'made':130 'max':113 'micropay':6,18 'must':196 'network':9,21,44,111 'no-api-key' 'offer':54 'openapi':169 'page':154 'paid':72 'part':47 'path':202 'payment':39,102,128,136 'per':74 'per-cal':73 'per-request-pricing' 'pool':192 'post':88 'price':151 'prompt':161 'protocol':40 'provid':27 'rate':80 'readm':153 'render':156 'request':67,89 'request/response':172 'requir':84,115 'return':91,185 'schema':170 'second':143 'settl':101 'spars':147 'specif':189 'subscript':83 'suit':51 'theta':1,13,33,182 'theta-token' 'timeout':140 'token':34 'token liquidity' 'tvl':193 'unit':120 'url':201 'usdc':71,104,122 'usdc-payment' 'util':65 'via':4,16,131 'volum':195 'wallet':160 'x':135 'x-payment':134 'x402':5,17,38,94,133 'x402-micropayment'","prices":[{"id":"7d9db509-7f41-4f75-96f3-b1525048f7f1","listingId":"537c81ea-4ca2-409e-8eae-645b84c0a40a","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/THETA/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":"2026-04-18T18:32:34.525Z"}],"sources":[{"listingId":"537c81ea-4ca2-409e-8eae-645b84c0a40a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/defi/THETA/liquidity","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:34.525Z","lastSeenAt":"2026-04-23T02:00:20.145Z"}],"details":{"listingId":"537c81ea-4ca2-409e-8eae-645b84c0a40a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/defi/THETA/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":"Endpoint returns HTTP 402 with x402 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/defi/THETA/liquidity"},{"claim":"Payment is 20,000 base units of USDC (6 decimals = $0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/defi/THETA/liquidity"},{"claim":"Site advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/defi/THETA/liquidity"}],"useCases":["Querying real-time THETA token liquidity metrics for trading decisions","Integrating THETA liquidity data into DeFi dashboards or bots","Agent-driven portfolio analysis requiring on-demand liquidity snapshots"],"bestFor":["AI agents needing pay-per-call DeFi data without API key management","Developers prototyping DeFi tools who want instant access with no signup","Low-volume consumers who prefer micropayments over subscriptions"],"notFor":["High-frequency trading requiring sub-second latency and bulk data","Users who need comprehensive documentation or guaranteed SLAs before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:59.291Z"},"updatedAt":"2026-04-23T02:00:20.145Z"}}