{"id":"50d53aed-9329-4658-a5cd-16ee09172a89","shortId":"MLYLP3","kind":"x402","title":"Check 1INCH token wallet balance via x402 micropayment on Base network for $0.02 per request.","tagline":"Check 1INCH token wallet balance via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns the balance of a 1INCH token wallet. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network at $0.02 per request.\n\nThe specific endpoint `/api/v1/wallet/1INCH/balance` appears to be a crypto wallet balance lookup for the 1INCH token. The x402 challenge confirms the endpoint is live, accepting POST requests with an exact-scheme payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02. No API keys or rate limits are advertised; access is granted per-request via the x402 payment header.\n\nDocumentation on the site is extremely thin — 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, and no usage examples available from the crawl. The endpoint's behavior and response format must be inferred entirely from its URL path and the platform's generic description.","tags":[],"capabilities":["wallet-balance","crypto-balance","1inch-token","x402-payment","usdc-base-network","pay-per-request"],"categories":["crypto","finance"],"synonyms":["1INCH balance","token balance API","wallet balance lookup","crypto balance check","1inch wallet","ERC-20 balance","web3 balance API"],"warnings":["No OpenAPI spec or request/response schema available","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content","Request body format and response structure are completely unknown","The specific endpoint path (/api/v1/wallet/1INCH/balance) is not listed on the site's landing page among advertised APIs, raising questions about its support status"],"endpointUrl":"https://lowpaymentfee.com/api/v1/wallet/1INCH/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/1INCH/balance","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 parameters, response schema, or usage examples. The docs pages are empty beyond a wallet-connect prompt. The endpoint's actual functionality is inferred solely from its URL 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'0.02':13,28,86,135 '000':124 '0x8335':129 '1INCH balance' '1inch':2,17,40,103 '1inch wallet' '1inch-token' '20':123 '2913':130 'ERC-20 balance' 'accept':113 'access':144 'addit':178 'advertis':143 'ai/ml':62 'analyt':61 'api':55,137,164 'appear':93 'avail':193 'balanc':5,20,37,99 'base':10,25,83,125,132 'behavior':200 'broader':48 'call':54 'challeng':107 'check':1,16 'confirm':108 'connect':173 'crawl':196 'crypto':97 'crypto balance check' 'crypto-balance' 'data':60 'descript':217 'detail':180 'doc':163 'document':155 'endpoint':32,69,91,110,198 'entir':207 'equal':134 'exact':119 'exact-schem':118 'exampl':192 'extrem':160 'finance/web3':64 'format':203 'generic':216 'grant':146 'header':154 'infer':63,206 'infrastructur':66 'key':138 'limit':141 'live':112 'lookup':100 'lowpaymentfee.com':34,58 'micropay':8,23 'must':204 'network':11,26,84 'offer':56 'openapi':184 'page':168 'part':45 'path':211 'pay':52 'pay-per-cal':51 'pay-per-request' 'payment':76,121,153 'per':14,29,53,87,148 'per-request':147 'platform':72,214 'post':114 'price':165 'prompt':175 'protocol':77 'rate':140 'readm':167 'render':170 'request':15,30,88,115,149 'request/response':187 'respons':202 'return':35 'schema':188 'scheme':120 'settl':78 'site':158 'span':59 'spec':185 'specif':90 'suit':49 'technic':179 'thin':161 'token':3,18,41,104 'token balance API' 'unit':126 'url':210 'usag':191 'usdc':80,128 'usdc-base-network' 'use':73 'util':67 'via':6,21,150 'wallet':4,19,42,98,174 'wallet balance lookup' 'wallet-balance' 'web3 balance API' 'x402':7,22,75,106,152 'x402-payment'","prices":[{"id":"50c6ff42-7a2f-4b13-83b5-f0a3e61161c7","listingId":"50d53aed-9329-4658-a5cd-16ee09172a89","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/1INCH/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":"2026-04-18T19:28:13.069Z"}],"sources":[{"listingId":"50d53aed-9329-4658-a5cd-16ee09172a89","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wallet/1INCH/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:13.069Z","lastSeenAt":"2026-04-23T13:31:42.893Z"}],"details":{"listingId":"50d53aed-9329-4658-a5cd-16ee09172a89","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wallet/1INCH/balance \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wallet/1INCH/balance"},{"claim":"All APIs on the platform are 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":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/wallet/1INCH/balance"}],"useCases":["Querying the balance of a 1INCH token wallet address programmatically","Building portfolio trackers that need on-demand token balance lookups","Integrating wallet balance checks into trading bots or DeFi dashboards"],"bestFor":["Agents or apps needing quick, keyless crypto balance lookups","Pay-per-use access without subscription commitments","Developers building on Base who want USDC-settled API calls"],"notFor":["Bulk or high-frequency balance polling (no documented rate limits but per-call cost adds up)","Users who need detailed transaction history or multi-token batch queries","Anyone requiring comprehensive API documentation or SLA guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:32.905Z"},"updatedAt":"2026-04-23T13:31:42.893Z"}}