{"id":"3fabeda7-36d7-43be-9a2c-486291edc849","shortId":"RAQNhT","kind":"x402","title":"x402-gated premium API access on Base, paid per-call in USDC.","tagline":"x402-gated premium API access on Base, paid per-call in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall on the Base network. The specific endpoint path `/api/v1/stripe/charges/115` suggests a Stripe-related charges resource, though the crawled documentation does not describe this particular route in detail. The provider's landing page advertises a broad suite of APIs spanning data & analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all at a flat $0.02 per request.\n\nThe x402 challenge for this specific endpoint advertises a maximum cost of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 \"exact\" scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. No API keys or rate limits are required — callers simply attach the X-PAYMENT header with a valid x402 payment proof.\n\nDocumentation beyond the landing page is extremely thin: the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no examples for this or any other endpoint. The actual behavior and response format of `/api/v1/stripe/charges/115` is unknown from the available material.","tags":[],"capabilities":["x402-payment","usdc-base","per-call-pricing","stripe-charges","no-api-key","no-rate-limit"],"categories":["finance","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","Stripe charges API","lowpaymentfee"],"warnings":["No OpenAPI spec or schema documentation available for this endpoint","All documentation pages (/docs, /api, /pricing, /README) render only 'Connect wallet' with no useful content","The specific purpose and expected input/output of /api/v1/stripe/charges/115 is undocumented","The endpoint path references 'stripe/charges' but payment is via x402/USDC — the relationship to Stripe is unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/115","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/115","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The purpose of this specific route (/api/v1/stripe/charges/115) is unclear. Docs pages return only 'Connect wallet' with no 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'/api/v1/stripe/charges/115':49,231 '/docs':189 '/pricing':191 '/readme':193 '0.02':110,136 '000':126 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':152 '0x8335':131 '20':125 '300':155 '6':140 'Base network API' 'Stripe charges API' 'USDC micropayment API' 'access':6,20,36 'actual':225 'address':151 'advertis':74,120 'ai/ml':83 'analysi':85 'analyt':82 'api':5,19,35,79,159 'attach':168 'avail':236 'base':8,22,43,127,133 'behavior':226 'behind':37 'beyond':181 'broad':76 'call':12,26 'caller':166 'challeng':115 'charg':55 'classif':87 'connect':199 'content':205 'convers':104 'cost':123 'crawl':59 'data':81 'decim':141 'describ':63 'detail':68 'document':60,180,214 'embed':88 'endpoint':30,47,119,223 'equal':135 'estim':98 'exact':148 'exampl':217 'exchang':93 'extrem':186 'feed':92 'financ':89 'flat':109 'format':229 'gas':97 'gate':3,17 'generat':105 'geocod':102 'given':137 'header':173 'infrastructur':100 'key':160 'land':72,183 'limit':163 'lowpaymentfee' 'lowpaymentfee.com':32 'made':144 'materi':237 'maximum':122 'network':44 'no-api-key' 'no-rate-limit' 'openapi':209 'page':73,184,194 'paid':9,23 'particular':65 'path':48 'pay-per-call API' 'payment':142,172,178 'paywal':40 'per':11,25,111 'per-cal':10,24 'per-call-pricing' 'premium':4,18,34 'price':91 'prompt':201 'proof':179 'provid':33,70 'quot':96 'rate':94,162 'relat':54 'render':196 'request':112 'request/response':212 'requir':165 'resourc':56 'respons':228 'rout':66 'schema':213 'scheme':149 'second':156 'sentiment':84 'simpli':167 'span':80 'spec':210 'specif':46,118 'stripe':53 'stripe-charges' 'stripe-rel':52 'suggest':50 'suit':77 'summar':86 'thin':187 'though':57 'timeout':157 'token':95 'unit':128 'unknown':233 'usdc':14,28,130,138 'usdc-base' 'util':101 'valid':103,176 'via':145 'wallet':200 'web3':90 'x':171 'x-payment':170 'x402':2,16,39,114,147,177 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"edb0bc28-16cf-470b-8055-1c5a64094776","listingId":"3fabeda7-36d7-43be-9a2c-486291edc849","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/115","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:53:50.695Z"}],"sources":[{"listingId":"3fabeda7-36d7-43be-9a2c-486291edc849","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/115","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:53:50.695Z","lastSeenAt":"2026-04-26T01:02:47.432Z"}],"details":{"listingId":"3fabeda7-36d7-43be-9a2c-486291edc849","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/115 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base with a 300-second timeout","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/115"},{"claim":"The provider advertises $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":"Documentation pages /docs, /api, /pricing, /README all show only 'Connect wallet'","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Making per-call paid API requests without API key management","Programmatic access to a Stripe charges resource via crypto micropayment","Agent-driven workflows that need keyless, pay-as-you-go endpoint access"],"bestFor":["Developers wanting zero-signup API access paid in USDC on Base","AI agents that can attach x402 payment headers autonomously","Prototyping integrations without committing to subscription plans"],"notFor":["Users who need detailed API documentation or OpenAPI specs before integrating","High-volume use cases where per-call pricing at $0.02 adds up significantly","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:57.175Z"},"updatedAt":"2026-04-26T01:02:47.432Z"}}