{"id":"89c90e53-a974-49fa-99de-fc689e9dca5b","shortId":"TL5BtP","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource path `/api/v1/wire/176` is not explicitly listed among the site's documented API categories, so its exact functionality is unclear. The broader lowpaymentfee.com platform advertises a suite of pay-per-request APIs spanning Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation).\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units, which at 6 decimals equals $0.02 per request. This matches the site's advertised flat pricing of $0.02/request across all endpoints. The platform emphasizes no API keys, no rate limits, no minimums, and instant access — callers simply attach an x402 payment header to each request.\n\nBecause the `/api/v1/wire/176` path does not appear in the site's public API listing and the crawled documentation pages returned only \"Connect wallet\" with no further content, the exact input/output schema and purpose of this specific endpoint remain unknown. It may be a generic or internal route. Prospective callers should test with a single paid request to discover the response format.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-settlement","base-network","http-post","json-response"],"categories":["api-gateway","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 API","pay-per-call API","USDC micropayment API","Base network API","premium API access"],"warnings":["The path /api/v1/wire/176 does not appear in the site's public API listing — its purpose is unknown.","All documentation, pricing, API, and README pages returned only 'Connect wallet' with no substantive content.","No OpenAPI spec, input schema, or response examples are available for this endpoint.","The exact functionality behind this endpoint is unverified — callers should test with a single paid request."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/176","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/wire/176","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 the specific endpoint /api/v1/wire/176 is not documented anywhere on the site. Documentation pages returned only 'Connect wallet' with no usable content. No input/output schema, no examples, and no description of what this particular route 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'/request':166 '0.02':12,28,153,165 '000':145 '0x8335':137 '20':144 '2913':138 '6':150 'Base network API' 'USDC micropayment API' 'accept':124 'access':7,23,40,183 'across':167 'advertis':72,161 'ai':89 'among':55 'amount':142 'analysi':93 'analyt':83 'api':6,22,39,60,80,174,206 'appear':200 'attach':186 'base':9,25,132,146 'base-network' 'broader':69 'call':4,20 'caller':184,242 'categori':61 'challeng':117 'classif':96 'confirm':118 'connect':215 'content':220 'contract':136 'convers':113 'crawl':210 'data':82,86 'decim':151 'discov':251 'document':59,211 'embed':97 'emphas':172 'endpoint':34,120,169,230 'equal':152 'estim':107 'exact':64,222 'exchang':102 'explicit':53 'export':87 'feed':101 'financ':98 'flat':162 'format':254 'function':65 'gas':106 'generat':114 'generic':237 'geocod':111 'header':190 'http-post' 'infrastructur':109 'input/output':223 'insight':88 'instant':182 'intern':239 'json-response' 'key':175 'learn':91 'limit':178 'list':54,207 'live':122 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':36,70 'machin':90 'match':157 'maximum':141 'may':234 'metric':84 'minimum':180 'network':133 'page':212 'paid':248 'path':49,197 'pay':2,18,77 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request':76 'payment':44,127,189 'per':3,13,19,29,78,154 'platform':71,171 'post':125 'premium':5,21,38 'premium API access' 'price':100,163 'prospect':241 'protocol':45 'provid':37 'public':205 'purpos':226 'quot':105 'rate':103,177 'remain':231 'report':85 'request':14,30,79,126,155,193,249 'resourc':48 'respons':253 'return':213 'rout':240 'schema':224 'sentiment':92 'settl':129 'simpli':185 'singl':247 'site':57,159,203 'span':81 'specif':47,229 'suit':74 'summar':95 'test':244 'text':94 'token':104 'unclear':67 'unit':147 'unknown':232 'usdc':16,32,135 'usdc-settlement' 'use':134 'util':110 'valid':112 'via':10,26,41 'wallet':216 'web3':99 'x402':11,27,43,116,188 'x402 API' 'x402-payment'","prices":[{"id":"894c9439-3ae4-423b-b8eb-a315603ba58a","listingId":"89c90e53-a974-49fa-99de-fc689e9dca5b","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/wire/176","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:45.351Z"}],"sources":[{"listingId":"89c90e53-a974-49fa-99de-fc689e9dca5b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/176","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:45.351Z","lastSeenAt":"2026-04-22T10:02:35.435Z"}],"details":{"listingId":"89c90e53-a974-49fa-99de-fc689e9dca5b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/176 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","exampleRequest":{"url":"https://lowpaymentfee.com/api/v1/wire/176","body":{},"method":"POST","headers":{"X-PAYMENT":"<x402-encoded-payment-token>","Content-Type":"application/json"}},"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, equaling $0.02 per request.","source_url":"https://lowpaymentfee.com/api/v1/wire/176"},{"claim":"The site advertises flat $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/wire/176"}],"useCases":["Programmatic access to paid API endpoints without API key management","Agent-driven workflows that need on-demand, per-call payment settlement","Testing x402 payment protocol integrations on Base"],"bestFor":["Developers or agents wanting keyless, pay-as-you-go API access","x402-compatible wallets and agent frameworks on Base","Low-volume or bursty workloads where flat per-request pricing is convenient"],"notFor":["Users who need detailed documentation or guaranteed SLAs before calling","High-volume bulk workloads where per-request pricing at $0.02 adds up quickly","Anyone without a Base-network USDC wallet or x402-compatible client"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:31.327Z"},"updatedAt":"2026-04-22T10:02:35.435Z"}}