{"id":"fde63e70-addb-4b3e-a949-1b41b2f499af","shortId":"bJWzKz","kind":"x402","title":"Pay-per-request premium API access on Base network via x402 protocol at $0.02/call.","tagline":"Pay-per-request premium API access on Base network via x402 protocol at $0.02/call.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. It is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe specific endpoint `/api/v1/policies/45` is listed under the umbrella of \"Premium API Access\" but its exact functionality is not documented in the available crawl material. The platform advertises instant access with per-call payment settled on-chain. The x402 challenge confirms the endpoint is live, accepting POST requests, and requires a maximum payment of 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 given USDC's 6 decimals.\n\nNo OpenAPI schema, detailed documentation, or example responses are available for this specific endpoint. The docs, pricing, and README pages all resolve to a \"Connect wallet\" prompt without substantive content. The endpoint's purpose (policies) suggests it may relate to policy data retrieval or management, but this is speculative.","tags":[],"capabilities":["x402-payment","per-request-billing","usdc-base-network","no-api-key","json-response"],"categories":["api-gateway","infrastructure"],"synonyms":["premium api","pay-per-call api","x402 endpoint","lowpaymentfee","micropayment api","base network api","usdc api access"],"warnings":["No documentation available for this specific endpoint — purpose of 'policies/45' is unknown","All doc/pricing/README pages return only a 'Connect wallet' prompt with no substantive content","No OpenAPI spec or output schema beyond basic HTTP method info","Endpoint functionality must be inferred; actual response format is unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/policies/45","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/policies/45","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via 402 challenge with clear pricing, but there is no documentation, no schema, no example responses, and the specific purpose of /api/v1/policies/45 is undocumented. Effectively a stub 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'/call':16,32 '0.02':15,31,74,160 '000':150 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':155 '20':149 '6':164 'accept':140 'access':7,23,40,105,122 'advertis':120 'ai':60 'analyt':59 'api':6,22,39,86,104 'avail':115,175 'base':9,25,82,151,157 'base network api' 'call':126 'categori':68 'chain':131 'challeng':134 'commit':91 'confirm':135 'connect':190 'content':195 'crawl':116 'data':58,207 'decim':165 'detail':169 'doc':181 'document':112,170 'endpoint':34,51,70,95,137,179,197 'equal':159 'exact':108 'exampl':172 'financ':63 'function':109 'given':161 'infrastructur':66 'instant':121 'json-response' 'key':87 'learn':62 'limit':89 'list':98 'live':139 'lowpaymentfee' 'lowpaymentfee.com':36 'machin':61 'manag':210 'mani':50 'materi':117 'maximum':146 'may':203 'micropayment api' 'network':10,26,83 'no-api-key' 'offer':52 'on-chain':129 'one':48 'openapi':167 'page':185 'paid':77 'pay':2,18 'pay-per-call api' 'pay-per-request':1,17 'payment':44,127,147 'per':3,19,75,125 'per-cal':124 'per-request-billing' 'platform':55,119 'polici':200,206 'post':141 'premium':5,21,38,103 'premium api' 'price':72,182 'prompt':192 'protocol':13,29,45 'provid':37 'purpos':199 'rate':88 'readm':184 'relat':204 'request':4,20,76,142 'requir':92,144 'resolv':187 'respons':173 'retriev':208 'schema':168 'settl':128 'span':57 'specif':94,178 'specul':214 'substant':194 'suggest':201 'umbrella':101 'unit':152 'usdc':79,154,162 'usdc api access' 'usdc-base-network' 'util':67 'via':11,27,41 'wallet':191 'web3':64 'without':193 'x402':12,28,43,133 'x402 endpoint' 'x402-payment'","prices":[{"id":"910afcbb-441d-465f-9099-b12b86638a86","listingId":"fde63e70-addb-4b3e-a949-1b41b2f499af","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/policies/45","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:51:55.325Z"}],"sources":[{"listingId":"fde63e70-addb-4b3e-a949-1b41b2f499af","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/policies/45","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:51:55.325Z","lastSeenAt":"2026-04-23T08:01:37.424Z"}],"details":{"listingId":"fde63e70-addb-4b3e-a949-1b41b2f499af","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/policies/45 \\\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 402 with x402 challenge requiring 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/policies/45"},{"claim":"Platform 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 on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/policies/45"}],"useCases":["Accessing premium data or services without subscription commitments","Agent-driven API consumption with per-call crypto payments","Integrating pay-as-you-go endpoints into automated workflows"],"bestFor":["Developers wanting no-signup, pay-per-use API access","AI agents that can settle x402 payments autonomously","Users who prefer on-chain USDC micropayments over traditional billing"],"notFor":["Users needing detailed API documentation before integration","High-volume consumers who would benefit from bulk pricing","Users without access to USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:02.704Z"},"updatedAt":"2026-04-23T08:01:37.424Z"}}