{"id":"1ab510c5-d005-42be-a08a-1da721f3780b","shortId":"KGMNgx","kind":"x402","title":"Check order status via x402 micropayment on Base network for $0.02 per request.","tagline":"Check order status via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns the status of order #139 via a POST request, gated behind an x402 payment challenge. It is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/orders/139/status` is labeled \"Premium API Access\" in the x402 challenge. The payment scheme is \"exact\" with a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the X-PAYMENT header per the x402 protocol. No API keys, rate limits, or subscriptions are required — each call is individually settled on-chain.\n\nThe platform's landing page advertises additional endpoints across categories like sentiment analysis, text summarization, embeddings, price feeds, gas estimates, geocoding, and more, all at the same $0.02 price point. Documentation pages beyond the landing page returned only a \"Connect wallet\" prompt with no further technical detail, so the actual response schema and behavior of this specific order-status endpoint are not documented in the crawl material.","tags":[],"capabilities":["x402-payment","usdc-base","order-status","pay-per-request","no-api-key"],"categories":["commerce","infrastructure"],"synonyms":["order status API","x402 micropayment","pay-per-call API","USDC payment API","Base network API","lowpaymentfee"],"warnings":["Documentation pages (/docs, /api, /pricing, /README) all returned only 'Connect wallet' with no technical content.","The endpoint is hardcoded to order 139 — it is unclear whether other order IDs are available or how to discover them.","No response schema or example response is available; actual output format is unknown.","The broader platform lists many endpoints but none were individually verified beyond this one."],"endpointUrl":"https://lowpaymentfee.com/api/v1/orders/139/status","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/orders/139/status","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing. However, there is no OpenAPI schema, no documented response format, no examples, and the docs pages are empty beyond a wallet-connect prompt. The endpoint path is hardcoded to a single order ID (139), making its general utility 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'0.02':11,24,78,123,186 '000':112 '0x8335':117 '139':36 '20':111 '2913':118 '6':127 'Base network API' 'USDC payment API' 'access':97 'across':167 'actual':208 'addit':165 'advertis':164 'ai/ml':68 'analysi':171 'analyt':67 'api':64,96,143 'base':8,21,87,113,120 'behavior':212 'behind':42 'beyond':191 'broader':52 'call':63,152 'categori':168 'chain':158 'challeng':46,101 'check':1,14 'connect':198 'crawl':225 'data':66,71 'decim':128 'detail':205 'document':189,222 'embed':174 'endpoint':28,91,166,219 'equal':122 'estim':178 'exact':106 'feed':176 'finance/web3':70 'gas':177 'gate':41 'geocod':179 'given':124 'header':137 'individu':154 'infer':69 'key':144 'label':94 'land':162,193 'like':169 'limit':146 'lowpaymentfee' 'lowpaymentfee.com':30,54 'made':131 'materi':226 'maxamountrequir':109 'micropay':6,19 'network':9,22,88 'no-api-key' 'offer':56 'on-chain':156 'order':2,15,35,217 'order status API' 'order-status':216 'page':163,190,194 'part':49 'pay':61 'pay-per-cal':60 'pay-per-call API' 'pay-per-request' 'payment':45,103,129,136 'per':12,25,62,79,138 'platform':53,160 'point':188 'post':39 'premium':95 'price':76,175,187 'prompt':200 'protocol':141 'rate':145 'request':13,26,40,80 'requir':150 'respons':209 'return':31,195 'schema':210 'scheme':104 'sentiment':170 'servic':74 'settl':82,155 'span':65 'specif':90,215 'status':3,16,33,218 'subscript':148 'summar':173 'technic':204 'text':172 'unit':114 'usdc':84,116,125 'usdc-base' 'util':73 'varieti':58 'via':4,17,37,132 'wallet':199 'x':135 'x-payment':134 'x402':5,18,44,100,140 'x402 micropayment' 'x402-payment'","prices":[{"id":"c3eb2c0e-05f7-4af5-95ee-92385318ac9a","listingId":"1ab510c5-d005-42be-a08a-1da721f3780b","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/orders/139/status","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:48:42.699Z"}],"sources":[{"listingId":"1ab510c5-d005-42be-a08a-1da721f3780b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/orders/139/status","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:48:42.699Z","lastSeenAt":"2026-04-22T12:03:56.759Z"}],"details":{"listingId":"1ab510c5-d005-42be-a08a-1da721f3780b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/orders/139/status \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge requires 20,000 base units of USDC on Base, equaling $0.02 per request.","source_url":"https://lowpaymentfee.com/api/v1/orders/139/status"},{"claim":"The platform advertises all APIs at $0.02 per request with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/orders/139/status"}],"useCases":["Checking the status of a specific order programmatically with per-call payment","Demonstrating x402 protocol integration for micropayment-gated endpoints","Agent-driven order tracking without pre-registration or API keys"],"bestFor":["Developers experimenting with x402 micropayment protocols","Agents that need on-demand order status checks without subscription overhead","Projects already operating on the Base L2 network with USDC"],"notFor":["Bulk order management requiring thousands of status checks (cost adds up at $0.02 each)","Users without a Base-network USDC wallet","Anyone needing order status for order IDs other than 139 (only this specific endpoint was probed)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:11.931Z"},"updatedAt":"2026-04-22T12:03:56.759Z"}}