{"id":"4198ed16-b7b9-4383-b4f6-e589ec70d127","shortId":"2fjhSE","kind":"x402","title":"Check BONK token wallet balance via x402 micropayment on Base network for $0.02 per request.","tagline":"Check BONK token wallet balance via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides wallet balance lookups for the BONK token. It is part of a broader platform offering various pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities—all gated behind the x402 payment protocol on the Base network.\n\nThe specific endpoint `/api/v1/wallet/BONK/balance` accepts POST requests and returns JSON. Payment is settled in USDC on Base (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) at a cost of 20,000 base units, which equals $0.02 given USDC's 6 decimals. No API keys or rate limits are required—access is granted per-request upon valid x402 payment.\n\nThe platform advertises a uniform $0.02/request pricing model across all endpoints with no minimums or commitments. Documentation beyond the landing page is sparse; the docs, API, pricing, and README pages all resolve to a minimal \"Connect wallet\" prompt with no additional technical detail. The wallet balance endpoint's input/output schemas are not documented beyond the x402 challenge metadata.","tags":[],"capabilities":["wallet-balance-lookup","bonk-token","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response"],"categories":["crypto","finance"],"synonyms":["BONK balance","token balance API","crypto wallet balance","Solana meme coin balance","BONK wallet lookup","Web3 balance check"],"warnings":["No API documentation available beyond the x402 challenge metadata","Input schema (required POST body fields) is undocumented","Output/response format is unknown","Docs, pricing, and README pages all show only 'Connect wallet' with no content","It is unclear whether this returns on-chain BONK (Solana SPL) balance or a different representation"],"endpointUrl":"https://lowpaymentfee.com/api/v1/wallet/BONK/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/BONK/balance","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) with clear pricing ($0.02 USDC on Base), but documentation is effectively nonexistent—no input/output schema, no example responses, and no details on what parameters the POST body expects or what the response contains. The request and response examples above are inferred, not 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'/request':136 '0.02':13,28,106,135 '000':101 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':95 '20':100 '6':110 'BONK balance' 'BONK wallet lookup' 'Solana meme coin balance' 'Web3 balance check' 'accept':81 'access':120 'across':139 'addit':171 'advertis':132 'ai/ml':60 'analyt':59 'api':56,113,156 'balanc':5,20,37,176 'base':10,25,75,93,102 'base-network' 'behind':68 'beyond':148,184 'bonk':2,17,41 'bonk-token' 'broader':48 'call':55 'challeng':187 'check':1,16 'commit':146 'connect':166 'contract':94 'cost':98 'crypto wallet balance' 'data':58 'decim':111 'detail':173 'doc':155 'document':147,183 'endpoint':32,79,141,177 'equal':105 'finance/web3':62 'gate':67 'given':107 'grant':122 'infer':61 'infrastructur':64 'input/output':179 'json':86 'json-response' 'key':114 'land':150 'limit':117 'lookup':38 'lowpaymentfee.com':34 'metadata':188 'micropay':8,23 'minim':165 'minimum':144 'model':138 'network':11,26,76 'no-api-key' 'offer':50 'page':151,160 'part':45 'pay':53 'pay-per-cal':52 'pay-per-request' 'payment':71,87,129 'per':14,29,54,124 'per-request':123 'platform':49,131 'post':82 'price':137,157 'prompt':168 'protocol':72 'provid':35 'rate':116 'readm':159 'request':15,30,83,125 'requir':119 'resolv':162 'return':85 'schema':180 'settl':89 'span':57 'spars':153 'specif':78 'technic':172 'token':3,18,42 'token balance API' 'uniform':134 'unit':103 'upon':126 'usdc':91,108 'usdc-settlement' 'util':65 'valid':127 'various':51 'via':6,21 'wallet':4,19,36,167,175 'wallet-balance-lookup' 'x402':7,22,70,128,186 'x402-payment'","prices":[{"id":"e3ec155e-5af4-48fe-a2f0-c1730c396d1c","listingId":"4198ed16-b7b9-4383-b4f6-e589ec70d127","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/BONK/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":"2026-04-18T19:28:05.715Z"}],"sources":[{"listingId":"4198ed16-b7b9-4383-b4f6-e589ec70d127","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wallet/BONK/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:05.715Z","lastSeenAt":"2026-04-23T16:07:51.766Z"}],"details":{"listingId":"4198ed16-b7b9-4383-b4f6-e589ec70d127","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wallet/BONK/balance \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"address\": \"<wallet_address>\"}'","exampleRequest":{"address":"0xAbC1234567890DEF1234567890abcdef12345678"},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge advertising USDC on Base at 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/wallet/BONK/balance"},{"claim":"Platform advertises $0.02/request uniform pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/wallet/BONK/balance"}],"useCases":["Checking BONK token balance for a given wallet address","Integrating real-time BONK holdings into portfolio dashboards","Automated agents verifying wallet balances before executing trades","Monitoring BONK token distribution across wallets"],"bestFor":["Developers needing quick BONK balance lookups without API key management","AI agents that can settle x402 micropayments on Base","Applications requiring low-cost, on-demand crypto balance queries"],"notFor":["Bulk historical balance queries (no batch or historical endpoint documented)","Users who cannot settle USDC payments on Base network","Production use requiring detailed API documentation or SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:33.151Z"},"updatedAt":"2026-04-23T16:07:51.766Z"}}