{"id":"2e953447-8bab-4572-ae86-34b8d6b548e1","shortId":"3u7RPQ","kind":"x402","title":"x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.","tagline":"x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories — all priced at $0.02 per request, settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/stripe/charges/79` accepts POST requests and returns `application/json`. The x402 challenge confirms it is live, requiring an exact payment of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals → $0.02) to wallet 0x1A2B…85F3. No API keys or rate limits are advertised; access is granted purely via the x402 payment header.\n\nDocumentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no description of what this particular endpoint actually returns or what input it expects beyond being a POST. The endpoint's name (\"Premium API Access\") and its path segment (\"stripe/charges/79\") suggest it may relate to Stripe charge operations, but this is speculative. Prospective users should be aware that the lack of documentation makes it difficult to know what data or functionality this endpoint provides.","tags":[],"capabilities":["x402-payment","usdc-base","per-call-pricing","json-response","post-method"],"categories":["api","payments"],"synonyms":["low payment fee API","x402 USDC endpoint","pay-per-call API","Base network API","micropayment API","stripe charges API"],"warnings":["No documentation available — /docs, /api, /pricing, and /README all return only 'Connect wallet' with no content.","No OpenAPI or schema describing request parameters or response format.","The endpoint path 'stripe/charges/79' is ambiguous; actual functionality is unknown.","No examples of request or response payloads available."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/79","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/stripe/charges/79","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no description of what the endpoint actually does. This is effectively a stub 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'/api/v1/stripe/charges/79':87 '/docs':146 '/pricing':148 '/readme':150 '/request':17,34 '0.02':16,33,74,118 '000':107 '0x1a2b':121 '0x8335':112 '20':106 '2913':113 '6':116 '85f3':122 'Base network API' 'accept':88 'access':6,23,42,131,197 'actual':180 'advertis':130 'ai':62 'analyt':61 'api':5,22,41,124,196 'application/json':93 'awar':219 'base':8,25,82,108,115 'behind':43 'beyond':187 'call':12,29 'categori':70 'challeng':96 'charg':209 'confirm':97 'connect':156 'content':162 'crawl':145 'data':60,231 'decim':117 'descript':174 'difficult':227 'document':140,171,224 'endpoint':36,52,86,179,192,235 'exact':103 'expect':186 'extrem':142 'financ':65 'function':233 'gate':3,20 'grant':133 'header':139 'infrastructur':68 'input':184 'json-response' 'key':125 'know':229 'lack':222 'learn':64 'limit':128 'live':100 'low payment fee API' 'lowpaymentfee.com':38,56 'machin':63 'make':225 'mani':51 'may':205 'micropayment API' 'name':194 'network':83 'offer':53 'one':49 'openapi':166 'oper':210 'page':151 'paid':9,26 'particular':178 'path':200 'pay-per-call API' 'payment':104,138 'paywal':46 'per':11,28,75 'per-cal':10,27 'per-call-pricing' 'platform':57 'post':89,190 'post-method' 'premium':4,21,40,195 'price':72 'prompt':158 'prospect':215 'provid':39,236 'pure':134 'rate':127 'relat':206 'request':76,90 'request/response':169 'requir':101 'return':92,153,181 'schema':170 'segment':201 'settl':77 'span':59 'spars':143 'spec':167 'specif':85 'specul':214 'stripe':208 'stripe charges API' 'stripe/charges/79':202 'substant':161 'suggest':203 'unit':109 'usdc':14,31,79,111 'usdc-base' 'user':216 'util':69 'via':135 'wallet':120,157 'web3':66 'x402':2,19,45,95,137 'x402 USDC endpoint' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"9b9911b7-cc45-45cc-8d0d-8614461e2ef8","listingId":"2e953447-8bab-4572-ae86-34b8d6b548e1","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/stripe/charges/79","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:54:33.090Z"}],"sources":[{"listingId":"2e953447-8bab-4572-ae86-34b8d6b548e1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/79","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:33.090Z","lastSeenAt":"2026-04-22T07:31:35.806Z"}],"details":{"listingId":"2e953447-8bab-4572-ae86-34b8d6b548e1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/79 \\\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/stripe/charges/79"},{"claim":"All endpoints 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":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/79"}],"useCases":["Programmatic access to an x402-gated service at $0.02 per call","Agent-driven API consumption without API keys or subscriptions","Testing x402 payment flows on Base with low-cost endpoints"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need keyless, pay-per-call API access on Base","Low-cost per-request usage without commitments"],"notFor":["Users who need detailed API documentation or schemas before integrating","High-volume use cases where per-call pricing may add up without volume discounts","Anyone needing guaranteed SLAs or support"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:55.12Z"},"updatedAt":"2026-04-22T07:31:35.806Z"}}