{"id":"f57f6a96-da87-42b3-81f0-7ddb3314aef7","shortId":"JHf9ys","kind":"x402","title":"Check RNDR token wallet balance via x402 micropayment on Base network for $0.02/request.","tagline":"Check RNDR token wallet balance via x402 micropayment on Base network for $0.02/request.","description":"This endpoint at lowpaymentfee.com returns the balance of an RNDR (Render Token) wallet. It is part of a broader platform offering pay-per-call APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories, all settled via the x402 protocol on the Base network using USDC.\n\nThe specific endpoint `/api/v1/wallet/RNDR/balance` accepts POST requests and is gated by an x402 payment challenge. The maximum amount required per call is 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made inline via the X-PAYMENT header — no API keys, accounts, or rate limits are required. The payment timeout is 300 seconds.\n\nThe platform advertises a uniform $0.02 per request pricing across all its endpoints. Documentation pages (docs, pricing, README) appear to be behind a wallet-connect gate and did not yield substantive content during crawling, so details about request/response schemas, supported parameters, and error handling are unknown. The endpoint is confirmed live via a valid 402 challenge response.","tags":[],"capabilities":["wallet-balance-query","rndr-token","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key"],"categories":["crypto","finance"],"synonyms":["RNDR balance","Render Token balance","wallet balance API","crypto balance check","token balance lookup","x402 crypto API"],"warnings":["No request or response schema available — input parameters and output format are unknown","All documentation pages (docs, pricing, README) returned only a wallet-connect prompt with no content","Endpoint purpose inferred solely from URL path '/api/v1/wallet/RNDR/balance'; actual functionality unverified","No evidence of what wallet address format or parameters the POST body expects"],"endpointUrl":"https://lowpaymentfee.com/api/v1/wallet/RNDR/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/RNDR/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 via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are gated behind wallet-connect with no useful content. The purpose is inferred from the URL path alone; request body format and response structure are entirely 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'/request':14,28 '0.02':13,27,108,144 '000':98 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':103 '20':97 '300':137 '402':194 '6':112 'RNDR balance' 'Render Token balance' 'accept':79 'account':127 'across':55,148 'advertis':141 'ai/ml':58 'amount':92 'analyt':57 'api':54,125 'appear':157 'balanc':5,19,35 'base':10,24,71,99,105 'base-network' 'behind':160 'broader':47 'call':53,95 'categori':62 'challeng':89,195 'check':1,15 'confirm':189 'connect':164 'content':171 'crawl':173 'crypto balance check' 'data':56 'decim':113 'detail':175 'doc':154 'document':152 'endpoint':30,77,151,187 'equal':107 'error':182 'finance/web3':59 'gate':84,165 'given':109 'handl':183 'header':123 'infrastructur':61 'inlin':117 'key':126 'limit':130 'live':190 'lowpaymentfee.com':32 'made':116 'maximum':91 'micropay':8,22 'network':11,25,72 'no-api-key' 'offer':49 'page':153 'paramet':180 'part':44 'pay':51 'pay-per-cal':50 'pay-per-call' 'payment':88,114,122,134 'per':52,94,145 'platform':48,140 'post':80 'price':147,155 'protocol':68 'rate':129 'readm':156 'render':39 'request':81,146 'request/response':177 'requir':93,132 'respons':196 'return':33 'rndr':2,16,38 'rndr-token' 'schema':178 'second':138 'settl':64 'specif':76 'substant':170 'support':179 'timeout':135 'token':3,17,40 'token balance lookup' 'uniform':143 'unit':100 'unknown':185 'usdc':74,102,110 'usdc-settlement' 'use':73 'valid':193 'via':6,20,65,118,191 'wallet':4,18,41,163 'wallet balance API' 'wallet-balance-query' 'wallet-connect':162 'x':121 'x-payment':120 'x402':7,21,67,87 'x402 crypto API' 'x402-payment' 'yield':169","prices":[{"id":"fe70a631-f7d4-401c-94c9-a397f703ee2c","listingId":"f57f6a96-da87-42b3-81f0-7ddb3314aef7","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/RNDR/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":"2026-04-18T19:28:21.480Z"}],"sources":[{"listingId":"f57f6a96-da87-42b3-81f0-7ddb3314aef7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wallet/RNDR/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:21.480Z","lastSeenAt":"2026-04-23T11:04:02.595Z"}],"details":{"listingId":"f57f6a96-da87-42b3-81f0-7ddb3314aef7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wallet/RNDR/balance \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"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 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/wallet/RNDR/balance"},{"claim":"Uniform pricing of $0.02 per request across all endpoints, no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/wallet/RNDR/balance"},{"claim":"Payment timeout is 300 seconds","source_url":"https://lowpaymentfee.com/api/v1/wallet/RNDR/balance"}],"useCases":["Querying the current RNDR token balance of a specific wallet address","Monitoring Render Token holdings programmatically","Building portfolio dashboards that need real-time RNDR balances","Agent-driven wallet balance checks without API key management"],"bestFor":["Developers needing quick, keyless RNDR balance lookups","AI agents that can settle x402 micropayments on Base","Applications requiring low-cost, on-demand crypto balance queries"],"notFor":["Bulk historical balance queries (no evidence of batch or historical support)","Non-RNDR token balances (this endpoint is RNDR-specific; other token endpoints may exist but are not documented here)","Users who cannot settle USDC payments on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:32.438Z"},"updatedAt":"2026-04-23T11:04:02.595Z"}}