{"id":"82b7b70e-1191-4aec-9a9e-716557a9c634","shortId":"5aRbMW","kind":"x402","title":"Pay-per-call PayPal payments API on Base via x402, $0.02/request in USDC.","tagline":"Pay-per-call PayPal payments API on Base via x402, $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides a PayPal payments API accessible via the x402 payment protocol. The specific resource `/api/v1/paypal/payments/37` is labeled \"Premium API Access\" and accepts POST requests. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request (20,000 base units with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader lowpaymentfee.com platform advertises a wide catalog of pay-per-call endpoints spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto data feeds, and utility services, all priced uniformly at $0.02 per request. However, the specific functionality behind this particular PayPal payments endpoint is unclear — the description is generic (\"Premium API Access\") and no request/response schema documentation was found. The docs, pricing, and API pages all resolve to a wallet-connect prompt with no additional technical detail.\n\nBecause there is no OpenAPI spec, no request body schema, and no example responses available, the actual behavior of this endpoint is opaque. Callers should be aware that the endpoint is live (confirmed via 402 challenge) but its input requirements and output format are undocumented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","paypal-payments","pay-per-call","no-api-key"],"categories":["finance","payments"],"synonyms":["PayPal payment API","x402 PayPal","crypto-gated PayPal","USDC payment endpoint","lowpaymentfee","pay-per-request API","Base network API"],"warnings":["No request body schema or OpenAPI spec available — input format is unknown","No response schema or example responses documented","Docs, pricing, and API pages all resolve to a wallet-connect prompt with no technical content","The endpoint path suggests PayPal payments but actual functionality is unverified","Description 'Premium API Access' is generic and does not describe what the endpoint does"],"endpointUrl":"https://lowpaymentfee.com/api/v1/paypal/payments/37","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/37","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), but there is zero documentation on what this endpoint actually does, no request/response schema, no examples, and the docs pages are empty wallet-connect prompts. The description 'Premium API Access' is completely generic. This is effectively a stub 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'/request':13,28 '0.02':12,27,74,140 '000':78 '20':77 '402':222 '6':82 'Base network API' 'PayPal payment API' 'USDC payment endpoint' 'accept':56 'access':40,54,161 'actual':204 'addit':185 'advertis':110 'ai/ml':123 'analysi':126 'analyt':122 'api':7,22,39,53,85,160,173 'attach':94 'avail':202 'awar':214 'base':9,24,64,79 'base-network' 'behavior':205 'behind':147 'bodi':196 'broader':107 'call':4,19,118 'caller':92,211 'catalog':113 'challeng':223 'classif':128 'coin':69 'confirm':220 'connect':181 'cost':72 'crypto-gated PayPal' 'data':121,131 'decim':83 'descript':156 'detail':187 'doc':170 'document':166 'embed':129 'endpoint':32,119,152,208,217 'exampl':200 'feed':132 'finance/crypto':130 'format':230 'found':168 'function':146 'generic':158 'header':99 'howev':143 'infer':124 'input':226 'key':86 'label':51 'limit':89 'live':219 'lowpaymentfee' 'lowpaymentfee.com':34,108 'network':65 'no-api-key' 'opaqu':210 'openapi':192 'output':229 'page':174 'particular':149 'pay':2,17,116 'pay-per-cal':1,16,115 'pay-per-call' 'pay-per-request API' 'payment':6,21,38,44,59,98,104,151 'paypal':5,20,37,150 'paypal-payments' 'per':3,18,75,117,141 'platform':109 'post':57 'premium':52,159 'price':137,171 'prompt':182 'proof':105 'protocol':45 'provid':35 'rate':88 'request':58,76,142,195 'request/response':164 'requir':91,227 'resolv':176 'resourc':48 'respons':201 'schema':165,197 'sentiment':125 'servic':135 'settl':61 'simpli':93 'span':120 'spec':193 'specif':47,145 'summar':127 'technic':186 'unclear':154 'undocu':232 'uniform':138 'unit':80 'usd':68 'usdc':15,30,67 'usdc-settlement' 'use':66 'util':134 'valid':102 'via':10,25,41,221 'wallet':180 'wallet-connect':179 'wide':112 'x':97 'x-payment':96 'x402':11,26,43,103 'x402 PayPal' 'x402-payment'","prices":[{"id":"ba7d5804-f0c2-4fcb-aefb-2a5f911b75a7","listingId":"82b7b70e-1191-4aec-9a9e-716557a9c634","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/37","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:51:00.536Z"}],"sources":[{"listingId":"82b7b70e-1191-4aec-9a9e-716557a9c634","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/paypal/payments/37","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:51:00.536Z","lastSeenAt":"2026-04-23T17:31:52.409Z"}],"details":{"listingId":"82b7b70e-1191-4aec-9a9e-716557a9c634","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/paypal/payments/37 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge advertising USDC on Base network at maxAmountRequired 20000","source_url":"https://lowpaymentfee.com/api/v1/paypal/payments/37"},{"claim":"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: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/paypal/payments/37"},{"claim":"Docs, pricing, and API pages show only 'Connect wallet' with no additional content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic PayPal payment initiation via crypto micropayment","Agent-driven payment workflows that settle in USDC on Base","Integrating PayPal payment functionality without traditional API key management"],"bestFor":["Developers wanting keyless, pay-per-call PayPal payment access","AI agents that can settle x402 payments on Base","Prototyping payment flows without subscription commitments"],"notFor":["Production PayPal integrations requiring documented request/response contracts","Use cases needing detailed error handling documentation or SLA guarantees","High-volume payment processing where $0.02/call overhead matters"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:05.368Z"},"updatedAt":"2026-04-23T17:31:52.409Z"}}