{"id":"35b04814-9278-474f-9161-52350b45a3de","shortId":"3zqg6S","kind":"x402","title":"Pay-per-request premium API access on Base via x402 — $0.02/call in USDC.","tagline":"Pay-per-request premium API access on Base via x402 — $0.02/call in USDC.","description":"This endpoint at lowpaymentfee.com provides a generic \"Premium API Access\" resource via the x402 payment protocol. The provider hosts a broad catalog of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all priced at $0.02 per request and payable in USDC on the Base network. No API keys or rate limits are advertised; callers authenticate purely through the x402 payment header.\n\nThe specific resource at `/api/v1/generate/resource/136` is listed under the title \"Premium API Access\" but lacks detailed documentation about what it actually returns. The x402 challenge is live and confirms payment of up to 20,000 units of USDC (0x8335… on Base) per call, with a 300-second timeout. The endpoint accepts HTTP POST and returns `application/json`. However, the provider's docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no further technical documentation, so the exact input parameters and response schema for this particular resource are unknown.\n\nBecause the endpoint description is entirely generic (\"Premium API Access\") and no OpenAPI spec, request/response examples, or detailed docs are available, it is difficult to determine the concrete functionality of resource 136. The provider appears to be a demonstration or early-stage x402 API marketplace. Callers should be aware that there is no published schema for request bodies or responses for this specific endpoint.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","http-post"],"categories":["infrastructure","api-marketplace"],"synonyms":["lowpaymentfee","x402 api","pay per call api","usdc api access","base network api","micropayment api","premium api"],"warnings":["Endpoint description is completely generic — 'Premium API Access' gives no indication of what the resource does","No documentation available: /docs, /pricing, /api, and /README all render only 'Connect wallet'","No OpenAPI or input/output schema published for this resource","Exact functionality of resource/136 is unknown and cannot be verified","Provider appears to be early-stage or a demo marketplace"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/136","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/generate/resource/136","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 payment details, but the endpoint title is entirely generic (\"Premium API Access\"), no documentation exists beyond a wallet-connect prompt, and there is no OpenAPI spec, request schema, or response example. The actual functionality of resource/136 is 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'/call':13,28 '0.02':12,27,72 '000':133 '0x8335':137 '136':222 '20':132 '300':144 'accept':149 'access':7,22,40,111,200 'actual':119 'advertis':90 'ai/ml':62 'analyt':61 'api':6,21,39,58,84,110,161,199,235 'appear':225 'application/json':154 'authent':92 'avail':211 'awar':240 'base':9,24,81,139 'base network api' 'bodi':249 'broad':51 'call':141 'caller':91,237 'catalog':52 'challeng':123 'concret':218 'confirm':127 'connect':169 'data':60,65 'demonstr':229 'descript':194 'detail':114,208 'determin':216 'difficult':214 'doc':159,209 'document':115,176 'earli':232 'early-stag':231 'endpoint':32,148,193,255 'entir':196 'exact':179 'exampl':206 'finance/web3':64 'function':219 'generic':37,197 'header':98 'host':49 'howev':155 'http':150 'http-post' 'infer':63 'infrastructur':67 'input':180 'json-response' 'key':85 'lack':113 'limit':88 'list':105 'live':125 'lowpaymentfee' 'lowpaymentfee.com':34 'marketplac':236 'micropayment api' 'network':82 'openapi':203 'page':164 'paramet':181 'particular':187 'pay':2,17,55 'pay per call api' 'pay-per-request':1,16,54 'payabl':76 'payment':45,97,128 'per':3,18,56,73,140 'post':151 'premium':5,20,38,109,198 'premium api' 'price':70,160 'prompt':171 'protocol':46 'provid':35,48,157,224 'publish':245 'pure':93 'rate':87 'readm':163 'render':166 'request':4,19,57,74,248 'request/response':205 'resourc':41,101,188,221 'respons':183,251 'return':120,153 'schema':184,246 'second':145 'span':59 'spec':204 'specif':100,254 'stage':233 'technic':175 'timeout':146 'titl':108 'unit':134 'unknown':190 'usdc':15,30,78,136 'usdc api access' 'usdc-base' 'util':68 'via':10,25,42 'wallet':170 'x402':11,26,44,96,122,234 'x402 api' 'x402-payment'","prices":[{"id":"5aa26f9b-f5a6-4521-97f9-c39ac517bd31","listingId":"35b04814-9278-474f-9161-52350b45a3de","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/generate/resource/136","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:02.118Z"}],"sources":[{"listingId":"35b04814-9278-474f-9161-52350b45a3de","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/136","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:02.118Z","lastSeenAt":"2026-04-23T22:01:42.035Z"}],"details":{"listingId":"35b04814-9278-474f-9161-52350b45a3de","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/136 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":{},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge is live, returns 402, and accepts USDC on Base with maxAmountRequired of 20000","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/136"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The provider lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only a 'Connect wallet' prompt with no technical content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a premium API resource without API key management","Agent-driven pay-per-request workflows using x402 on Base","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers experimenting with x402 payment-gated APIs","AI agents that need keyless, pay-per-use API access on Base","Prototyping micropayment-based API consumption flows"],"notFor":["Users who need well-documented, schema-defined API contracts","High-volume production workloads requiring SLAs or guaranteed uptime","Anyone needing free or traditional API-key-based access"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:00.804Z"},"updatedAt":"2026-04-23T22:01:42.035Z"}}