{"id":"0f0a6af5-6b85-471f-a345-c1d98e79daaa","shortId":"scWyHb","kind":"x402","title":"Pay-per-call PayPal payments endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call PayPal payments endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides a \"Premium API Access\" resource located at `/api/v1/paypal/payments/56`. It is part of a broader platform offering dozens of pay-per-call API endpoints across data analytics, AI/ML, finance, infrastructure, and payments categories — all gated via the x402 payment protocol on the Base network using USDC.\n\nThe endpoint accepts POST requests and returns JSON. Payment is settled on-chain in USDC (contract `0x8335…2913` on Base) using the x402 \"exact\" scheme. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. No API keys are needed; callers authenticate by including an `X-PAYMENT` header with a valid x402 payment proof. The platform advertises no rate limits and instant access.\n\nDocumentation is extremely sparse — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/paypal/payments/56` endpoint actually does beyond the generic \"Premium API Access\" label. The specific functionality (e.g., whether it initiates a PayPal payment, retrieves payment status, or something else) cannot be determined from available materials.","tags":[],"capabilities":["x402-payment-gated","usdc-settlement","base-network","pay-per-call","json-response","no-api-key","paypal-payments"],"categories":["payments","finance"],"synonyms":["paypal payment api","x402 paypal","crypto-gated paypal","pay-per-call payments","lowpaymentfee","usdc payment endpoint","base network api"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.","The specific functionality of /api/v1/paypal/payments/56 is unknown; 'Premium API Access' is a generic label.","No request body schema or response schema is documented anywhere.","No OpenAPI specification or ai-plugin manifest found.","The endpoint path suggests PayPal integration but no details confirm what operations are supported."],"endpointUrl":"https://lowpaymentfee.com/api/v1/paypal/payments/56","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/paypal/payments/56","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (returns a valid x402 402 challenge), and pricing is clear at $0.02/call in USDC on Base. However, there is no OpenAPI schema, no request/response examples, no documentation beyond a wallet-connect prompt, and the actual functionality of the /paypal/payments/56 endpoint is completely undocumented. This is effectively a stub 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'/paypal/payments/56':196 '/request':17,34 '0.02':16,33,129 '000':120 '0x8335':103 '20':119 '2913':104 '6':125 'accept':88 'access':43,159,205 'across':64 'actual':198 'advertis':153 'ai/ml':67 'amount':114 'analyt':66 'api':42,62,132,167,204 'authent':137 'avail':227 'base':9,26,82,106,121 'base network api' 'base-network' 'beyond':200 'broader':53 'call':4,21,61,117 'caller':136 'cannot':223 'categori':72 'chain':99 'connect':175 'content':181 'contract':102 'crypto-gated paypal' 'data':65 'decim':126 'descript':192 'determin':225 'doc':165 'document':160 'dozen':56 'e.g':210 'els':222 'endpoint':7,24,36,63,87,197 'equal':128 'exact':110 'exampl':189 'extrem':162 'financ':68 'function':209 'gate':74 'generic':202 'header':144 'includ':139 'infrastructur':69 'initi':213 'instant':158 'json':93 'json-response' 'key':133 'label':206 'limit':156 'locat':45 'lowpaymentfee' 'lowpaymentfee.com':38 'materi':228 'maximum':113 'need':135 'network':83 'no-api-key' 'offer':55 'on-chain':97 'openapi':185 'page':170 'part':50 'pay':2,19,59 'pay-per-cal':1,18,58 'pay-per-call' 'pay-per-call payments' 'payment':6,23,71,78,94,143,149,216,218 'paypal':5,22,215 'paypal payment api' 'paypal-payments' 'per':3,20,60,116 'platform':54,152 'post':89 'premium':41,203 'price':166 'prompt':177 'proof':150 'protocol':79 'provid':39 'rate':155 'readm':169 'render':172 'request':90 'request/response':188 'requir':115 'resourc':44 'retriev':217 'return':92 'schema':186 'scheme':111 'settl':12,29,96 'someth':221 'spars':163 'specif':208 'status':219 'unit':122 'usd':130 'usdc':14,31,85,101,124 'usdc payment endpoint' 'usdc-settlement' 'use':84,107 'valid':147 'via':10,27,75 'wallet':176 'whether':211 'x':142 'x-payment':141 'x402':11,28,77,109,148 'x402 paypal' 'x402-payment-gated'","prices":[{"id":"4219c18f-cb0b-41af-9d5c-9f22228606fc","listingId":"0f0a6af5-6b85-471f-a345-c1d98e79daaa","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/paypal/payments/56","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:51:11.877Z"}],"sources":[{"listingId":"0f0a6af5-6b85-471f-a345-c1d98e79daaa","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/paypal/payments/56","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:51:11.877Z","lastSeenAt":"2026-04-23T16:07:20.994Z"}],"details":{"listingId":"0f0a6af5-6b85-471f-a345-c1d98e79daaa","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/paypal/payments/56 \\\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 endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/paypal/payments/56"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/paypal/payments/56"},{"claim":"Docs, pricing, API, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatically interact with PayPal payment functionality without traditional API keys","Agent-initiated payment operations settled via on-chain USDC micropayments","Integrating PayPal payment flows into crypto-native or x402-compatible agent workflows"],"bestFor":["Developers wanting keyless, pay-per-call access to a PayPal-related endpoint","AI agents that can settle x402 payments on Base in USDC","Users who prefer micropayment-gated APIs over subscription-based access"],"notFor":["Anyone needing detailed API documentation or guaranteed SLAs before integration","High-volume PayPal integrations where direct PayPal API access would be cheaper","Users who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:04.805Z"},"updatedAt":"2026-04-23T16:07:20.994Z"}}