{"id":"bb5c14a5-e48a-4955-9b0f-2b0ddac42390","shortId":"Q8FEnK","kind":"x402","title":"Query DYDX wallet balance on Base via x402 micropayment at $0.02 per request.","tagline":"Query DYDX wallet balance on Base via x402 micropayment at $0.02 per request.","description":"This endpoint at lowpaymentfee.com returns the DYDX token wallet balance when called via HTTP POST with an x402 payment header. 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 priced at $0.02 per request and settled in USDC on the Base network.\n\nThe x402 challenge confirms the endpoint is live and accepts exact-scheme payments to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3. The maxAmountRequired is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. No API keys or rate limits are advertised; access is gated solely by the x402 payment protocol. The response MIME type is application/json.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what fields the balance response contains or what input parameters (if any) are expected in the POST body. The endpoint path suggests it returns a balance for the DYDX token, but the exact request format and response structure are unknown.","tags":[],"capabilities":["wallet-balance","dydx-token","x402-payment","usdc-settlement","base-network","pay-per-request","crypto-balance-query"],"categories":["crypto","finance"],"synonyms":["DYDX balance API","crypto wallet balance","token balance lookup","dYdX balance check","Web3 balance endpoint","x402 crypto API"],"warnings":["No OpenAPI or schema documentation available — request body and response structure are entirely unknown.","All documentation pages (docs, API, pricing, README) render only a 'Connect wallet' prompt with no technical content.","The specific functionality of this DYDX balance endpoint is inferred solely from the URL path; no authoritative description exists.","No information on error handling, rate limits, or uptime guarantees."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wallet/DYDX/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/DYDX/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 (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of required parameters or response fields. Effectively a stub 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'000':107 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':102 '20':106 '6':112 'DYDX balance API' 'Web3 balance endpoint' 'accept':95 'access':126 'address':101 'advertis':125 'ai/ml':66 'analyt':65 'api':59,119,147 'application/json':140 'balanc':4,17,36,179,201 'base':6,19,84,108 'base-network' 'bodi':193 'broader':52 'call':38,58 'challeng':88 'confirm':89 'connect':156 'contain':181 'crypto wallet balance' 'crypto-balance-query' 'dYdX balance check' 'data':64 'decim':113 'descript':174 'detail':163 'doc':146 'document':141 'dydx':2,15,33,204 'dydx-token' 'endpoint':28,91,195 'equal':115 'exact':97,208 'exact-schem':96 'exampl':171 'expect':189 'extrem':143 'field':177 'finance/web3':68 'format':210 'gate':128 'header':46 'http':40 'infer':67 'infrastructur':70 'input':184 'key':120 'limit':123 'live':93 'lowpaymentfee.com':30,62 'maxamountrequir':104 'micropay':9,22 'mime':137 'network':85 'offer':60 'openapi':167 'page':151 'paramet':185 'part':49 'path':196 'pay':56 'pay-per-cal':55 'pay-per-request' 'payment':45,99,133 'per':12,25,57,76 'post':41,192 'price':73,148 'prompt':158 'protocol':134 'queri':1,14 'rate':122 'readm':150 'render':153 'request':13,26,77,209 'request/response':170 'respons':136,180,212 'return':31,199 'schema':168 'scheme':98 'settl':79 'sole':129 'span':63 'spars':144 'structur':213 'suggest':197 'suit':53 'technic':162 'token':34,205 'token balance lookup' 'type':138 'unit':109 'unknown':215 'usd':117 'usdc':81,111 'usdc-settlement' 'util':71 'via':7,20,39 'wallet':3,16,35,157 'wallet-balance' 'x402':8,21,44,87,132 'x402 crypto API' 'x402-payment'","prices":[{"id":"1cfd9706-6fb0-4026-a6bb-7195b32c54d4","listingId":"bb5c14a5-e48a-4955-9b0f-2b0ddac42390","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/DYDX/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":"2026-04-18T19:28:16.048Z"}],"sources":[{"listingId":"bb5c14a5-e48a-4955-9b0f-2b0ddac42390","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wallet/DYDX/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:16.048Z","lastSeenAt":"2026-04-23T12:32:03.030Z"}],"details":{"listingId":"bb5c14a5-e48a-4955-9b0f-2b0ddac42390","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wallet/DYDX/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 HTTP 402 with x402 challenge requiring 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/wallet/DYDX/balance"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/wallet/DYDX/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"}],"useCases":["Querying the current DYDX token balance for a given wallet address","Integrating real-time DYDX balance data into trading bots or portfolio dashboards","Agent-driven portfolio monitoring that pays per query with no API key required"],"bestFor":["Developers needing on-demand DYDX balance lookups without subscription commitments","AI agents that can settle micropayments via x402 on Base","Applications requiring keyless, pay-per-use crypto data access"],"notFor":["Bulk historical balance queries (no batch or historical endpoint documented)","Users who need detailed documentation or guaranteed SLAs before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:32.764Z"},"updatedAt":"2026-04-23T12:32:03.030Z"}}