{"id":"afe4c448-ee85-492c-a1fc-b6c4f5f2ff37","shortId":"nJ96wc","kind":"x402","title":"Check XLM (Stellar) wallet balances via a pay-per-call x402 endpoint on Base.","tagline":"Check XLM (Stellar) wallet balances via a pay-per-call x402 endpoint on Base.","description":"This endpoint at lowpaymentfee.com returns Stellar (XLM) wallet balance information. It is part of a broader suite of pay-per-request APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.\n\nThe specific endpoint `/api/v1/wallet/XLM/balance` accepts POST requests and returns JSON. Each call costs $0.02 in USDC (the x402 challenge advertises a maxAmountRequired of 20,000 base units; USDC uses 6 decimals, so 20000 / 10^6 = $0.02). Payment is made via the x402 exact scheme to the specified payTo address. No API keys or account registration are required — access is granted per-request upon valid payment.\n\nDocumentation is extremely sparse. The provider's docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawled material. The endpoint is confirmed live (returns a proper 402 challenge), but the actual request format (e.g., whether a wallet address is passed in the body or as a parameter) and the response schema are unknown.","tags":[],"capabilities":["xlm-balance","stellar-wallet","crypto-balance-lookup","x402-payment","usdc-base-settlement","pay-per-request"],"categories":["crypto","finance"],"synonyms":["Stellar balance API","XLM wallet balance","Stellar Lumens balance check","crypto wallet balance","blockchain balance query","XLM account balance"],"warnings":["No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no technical content.","Request body schema is unknown; the example_request_json is speculative.","Response schema is completely unknown; no example_response_json can be provided.","No OpenAPI or machine-readable spec found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wallet/XLM/balance","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/wallet/XLM/balance","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC per call). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The request body format and response structure are entirely 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'0.02':95,117 '000':106 '10':115 '20':105 '20000':114 '402':197 '6':111,116 'Stellar Lumens balance check' 'Stellar balance API' 'XLM account balance' 'XLM wallet balance' 'accept':86 'access':139 'account':135 'actual':201 'addit':169 'address':130,208 'advertis':101 'ai/ml':62 'analyt':61 'api':53,132,158 'avail':184 'balanc':5,20,39 'base':15,30,80,107 'blockchain balance query' 'bodi':213 'broader':46 'call':11,26,93 'challeng':100,198 'check':1,16 'confirm':192 'connect':164 'cost':94 'crawl':187 'crypto wallet balance' 'crypto-balance-lookup' 'data':60 'decim':112 'detail':171 'doc':155 'document':148 'e.g':204 'endpoint':13,28,32,69,84,190 'exact':124 'exampl':183 'extrem':150 'finance/web3':64 'format':203 'grant':141 'infer':63 'inform':40 'json':91 'key':133 'live':193 'lowpaymentfee.com':34 'made':120 'materi':188 'maxamountrequir':103 'network':81 'offer':54 'openapi':175 'page':159 'paramet':217 'part':43 'pass':210 'pay':9,24,50 'pay-per-cal':8,23 'pay-per-request':49 'payment':73,118,147 'payto':129 'per':10,25,51,143 'per-request':142 'post':87 'price':156 'prompt':166 'proper':196 'protocol':74 'provid':58,153 'registr':136 'render':161 'request':52,88,144,202 'request/response':178 'requir':138 'respons':220 'return':35,90,194 'schema':179,221 'scheme':125 'servic':67 'settl':75 'span':59 'spars':151 'spec':176 'specif':83 'specifi':128 'stellar':3,18,36 'stellar-wallet' 'suit':47 'technic':170 'unit':108 'unknown':223 'upon':145 'usag':182 'usdc':77,97,109 'usdc-base-settlement' 'use':70,110 'util':66 'valid':146 'via':6,21,121 'wallet':4,19,38,165,207 'whether':205 'x402':12,27,72,99,123 'x402-payment' 'xlm':2,17,37 'xlm-balance'","prices":[{"id":"35076b70-89de-48f7-b662-d6cd81e138c4","listingId":"afe4c448-ee85-492c-a1fc-b6c4f5f2ff37","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/wallet/XLM/balance","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:37.411Z"}],"sources":[{"listingId":"afe4c448-ee85-492c-a1fc-b6c4f5f2ff37","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wallet/XLM/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:37.411Z","lastSeenAt":"2026-04-23T09:31:50.785Z"}],"details":{"listingId":"afe4c448-ee85-492c-a1fc-b6c4f5f2ff37","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wallet/XLM/balance \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"address\": \"GABCDEFG...\"}'","exampleRequest":{"address":"GABCDEFGHIJKLMNOPQRSTUVWXYZ234567"},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/wallet/XLM/balance"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/wallet/XLM/balance"},{"claim":"All APIs priced at $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying the balance of a Stellar (XLM) wallet address programmatically","Building portfolio trackers that need real-time XLM balance data","Automated agents verifying XLM holdings before executing trades or transfers"],"bestFor":["Agents needing on-demand XLM balance lookups without API key management","Pay-per-use crypto balance queries settled in USDC on Base","Lightweight integrations that don't need a full Stellar node"],"notFor":["Bulk or high-frequency balance polling (no documented rate limits but $0.02/call adds up)","Querying balances for non-Stellar blockchains (this endpoint is XLM-specific)","Users who need detailed transaction history beyond simple balance"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:31.701Z"},"updatedAt":"2026-04-23T09:31:50.785Z"}}