{"id":"efb720a6-97dc-4306-8bd1-4f2bf3a003cf","shortId":"nt9WvM","kind":"x402","title":"Check Litecoin wallet balances via x402 micropayment — $0.02 per request on Base.","tagline":"Check Litecoin wallet balances via x402 micropayment — $0.02 per request on Base.","description":"This endpoint at lowpaymentfee.com returns Litecoin (LTC) wallet balance data, gated behind an x402 payment challenge. Each request costs $0.02 (20,000 base units of USDC on the Base network, where USDC has 6 decimals). The endpoint accepts POST requests and returns JSON.\n\nThe provider, lowpaymentfee.com, offers a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments. Payment is settled on-chain via USDC on Base using the x402 protocol (version 1, \"exact\" scheme). The specific endpoint `/api/v1/wallet/LTC/balance` falls under the Finance & Web3 category and is designed to retrieve balance information for Litecoin wallets.\n\nDocumentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know what request body parameters are expected or what the response structure looks like.","tags":[],"capabilities":["ltc-wallet-balance","x402-payment","usdc-base-settlement","per-request-pricing","no-api-key","crypto-balance-lookup"],"categories":["crypto","finance"],"synonyms":["litecoin balance API","LTC wallet balance","crypto wallet balance check","litecoin address balance","x402 crypto API","pay-per-call wallet API"],"warnings":["No documentation available — /docs, /api, /pricing, and /README all show only 'Connect wallet' with no content","No OpenAPI or schema definition; request body parameters are unknown and inferred","Response format is completely undocumented; example_response_json is null","The provider lists many diverse API categories (AI, analytics, finance, utils) all at $0.02 — actual functionality behind each endpoint is unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/wallet/LTC/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/LTC/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/request in USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation, and no examples — the docs pages are all blank 'Connect wallet' stubs. The request and response JSON examples are 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'/api/v1/wallet/ltc/balance':128 '/docs':154 '/pricing':156 '/readme':158 '0.02':8,20,44,93 '000':46 '1':122 '20':45 '402':194 '6':58 'LTC wallet balance' 'accept':62 'addit':169 'ai/ml':84 'analyt':83 'api':80,98 'avail':185 'balanc':4,16,33,140 'base':12,24,47,53,116 'behind':36 'beyond':146 'bodi':208 'broad':73 'call':79 'catalog':74 'categori':134 'chain':112 'challeng':40,195 'check':1,13 'commit':106 'confirm':189 'connect':164 'cost':43 'crypto wallet balance check' 'crypto-balance-lookup' 'data':34,82 'decim':59 'design':137 'detail':171 'difficult':203 'document':145,180,200 'endpoint':26,61,127,187 'exact':123 'exampl':183 'expect':211 'extrem':151 'fall':129 'financ':132 'finance/web3':86 'gate':35 'infer':85 'inform':141 'infrastructur':88 'json':67 'key':99 'know':205 'lack':198 'land':148 'like':218 'limit':102 'litecoin':2,14,30,143 'litecoin address balance' 'litecoin balance API' 'live':190 'look':217 'lowpaymentfee.com':28,70 'ltc':31 'ltc-wallet-balance' 'make':201 'micropay':7,19 'minimum':105 'network':54 'no-api-key' 'offer':71 'on-chain':110 'openapi':175 'page':149,159 'paramet':209 'pay':77 'pay-per-cal':76 'pay-per-call wallet API' 'payload':184 'payment':39,107 'per':9,21,78,94 'per-request-pricing' 'post':63 'price':91 'prompt':166 'proper':193 'protocol':120 'provid':69 'rate':101 'render':161 'request':10,22,42,64,95,207 'request/response':178 'respons':215 'retriev':139 'return':29,66,191 'schema':179 'scheme':124 'settl':109 'span':81 'spars':152 'spec':176 'specif':126 'structur':216 'technic':170 'unit':48 'usdc':50,56,114 'usdc-base-settlement' 'use':117 'util':89 'version':121 'via':5,17,113 'wallet':3,15,32,144,165 'web3':133 'x402':6,18,38,119 'x402 crypto API' 'x402-payment'","prices":[{"id":"6d536dd4-72fa-432a-929f-9cf6edcc65fa","listingId":"efb720a6-97dc-4306-8bd1-4f2bf3a003cf","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/LTC/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":"2026-04-18T19:28:17.225Z"}],"sources":[{"listingId":"efb720a6-97dc-4306-8bd1-4f2bf3a003cf","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wallet/LTC/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:17.225Z","lastSeenAt":"2026-04-23T12:32:03.086Z"}],"details":{"listingId":"efb720a6-97dc-4306-8bd1-4f2bf3a003cf","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wallet/LTC/balance \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{\"address\": \"LTC_WALLET_ADDRESS\"}'","exampleRequest":{"address":"LQTpS3VaYTjCr4s98r4VBnGnkuXsZMwkdR"},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wallet/LTC/balance"},{"claim":"All APIs priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/wallet/LTC/balance"}],"useCases":["Querying Litecoin wallet balances programmatically without API key registration","Integrating LTC balance checks into agent workflows with automatic micropayment settlement","Building portfolio trackers or dashboards that need on-demand LTC balance lookups"],"bestFor":["Agents or bots needing quick, keyless Litecoin balance queries","Developers who prefer pay-per-call over subscription billing","x402-compatible clients that can settle USDC on Base"],"notFor":["High-volume balance monitoring where $0.02/request adds up quickly","Users who need detailed LTC transaction history beyond simple balances","Anyone without a Base-compatible USDC wallet for payment"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:32.669Z"},"updatedAt":"2026-04-23T12:32:03.086Z"}}