{"id":"231818aa-ed23-4f35-b0ff-d10cf7711a81","shortId":"mXsyu7","kind":"x402","title":"Pay-per-call PayPal payments endpoint on Base via x402, $0.02/request in USDC.","tagline":"Pay-per-call PayPal payments endpoint 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 route `/api/v1/paypal/payments/100` is described as \"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 APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto market data, and infrastructure utilities, all priced at $0.02 per request. However, the specific functionality behind this particular PayPal payments endpoint is not documented beyond its title. There is no OpenAPI schema, no request/response examples, and the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional content.\n\nBecause the endpoint is live (returns a valid 402 x402 challenge) but lacks any documentation about what request body it expects or what response it returns, agents should treat this as a functional but poorly documented service. The payment mechanics are clear, but the actual API behavior is opaque.","tags":[],"capabilities":["x402-payment","paypal-payments","usdc-settlement","base-network","pay-per-call","no-api-key"],"categories":["finance","payments"],"synonyms":["PayPal payment API","x402 PayPal","crypto-paid PayPal","lowpaymentfee","USDC payment endpoint","pay-per-request API","Base network API"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'","No OpenAPI schema or request/response examples provided","Actual functionality of the PayPal payments endpoint is unknown beyond the URL path","No error handling or response format documentation"],"endpointUrl":"https://lowpaymentfee.com/api/v1/paypal/payments/100","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/100","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is zero documentation on request format, response schema, or actual functionality. Docs pages render only 'Connect wallet' with no content. The listing title 'Premium API Access' is generic and uninformative. Without knowing what the endpoint actually does beyond its URL path hint, this is effectively a 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'/request':13,28 '0.02':12,27,75,140 '000':79 '20':78 '402':193 '6':83 'Base network API' 'PayPal payment API' 'USDC payment endpoint' 'accept':57 'access':40,55 'actual':229 'addit':183 'advertis':111 'agent':211 'ai/ml':124 'analysi':127 'analyt':123 'api':39,54,86,120,172,230 'attach':95 'base':9,24,65,80 'base-network' 'behavior':231 'behind':147 'beyond':156 'bodi':203 'broader':108 'call':4,19,119 'caller':93 'catalog':114 'challeng':195 'classif':129 'clear':226 'coin':70 'connect':178 'content':184 'cost':73 'crypto-paid PayPal' 'data':122,133 'decim':84 'describ':51 'doc':169 'document':155,199,220 'embed':130 'endpoint':7,22,32,152,187 'exampl':166 'expect':205 'finance/crypto':131 'function':146,217 'header':100 'howev':143 'infer':125 'infrastructur':135 'key':87 'lack':197 'limit':90 'live':189 'lowpaymentfee' 'lowpaymentfee.com':34,109 'market':132 'mechan':224 'network':66 'no-api-key' 'opaqu':233 'openapi':162 'page':173 'particular':149 'pay':2,17,117 'pay-per-cal':1,16,116 'pay-per-call' 'pay-per-request API' 'payment':6,21,38,44,60,99,105,151,223 'paypal':5,20,37,150 'paypal-payments' 'per':3,18,76,118,141 'platform':110 'poor':219 'post':58 'premium':53 'price':138,170 'prompt':180 'proof':106 'protocol':45 'provid':35 'rate':89 'render':175 'request':59,77,142,202 'request/response':165 'requir':92 'respons':208 'return':190,210 'rout':48 'schema':163 'sentiment':126 'servic':221 'settl':62 'simpli':94 'span':121 'specif':47,145 'summar':128 'titl':158 'treat':213 'unit':81 'usd':69 'usdc':15,30,68 'usdc-settlement' 'use':67 'util':136 'valid':103,192 'via':10,25,41 'wallet':179 'wide':113 'x':98 'x-payment':97 'x402':11,26,43,104,194 'x402 PayPal' 'x402-payment'","prices":[{"id":"48016b52-8dd7-4fea-80e6-230c55ca3bd0","listingId":"231818aa-ed23-4f35-b0ff-d10cf7711a81","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/100","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:51:02.334Z"}],"sources":[{"listingId":"231818aa-ed23-4f35-b0ff-d10cf7711a81","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/paypal/payments/100","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:51:02.334Z","lastSeenAt":"2026-04-23T17:31:52.513Z"}],"details":{"listingId":"231818aa-ed23-4f35-b0ff-d10cf7711a81","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/paypal/payments/100 \\\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 a valid x402 402 challenge with USDC on Base network, maxAmountRequired 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/paypal/payments/100"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/paypal/payments/100"},{"claim":"Docs, pricing, API, and README pages render only 'Connect wallet' with no additional content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Initiating PayPal payments programmatically via a crypto-settled API call","Integrating PayPal payment flows into agent workflows without traditional API keys","Making one-off PayPal payment requests paid in USDC on Base"],"bestFor":["Agents needing keyless, pay-per-call PayPal payment access","Developers who want to avoid PayPal API key management","Crypto-native workflows that need fiat payment rails"],"notFor":["Production use requiring documented request/response schemas","High-volume PayPal integrations needing guaranteed SLAs or support","Users who need detailed error handling documentation"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:05.26Z"},"updatedAt":"2026-04-23T17:31:52.513Z"}}