{"id":"2b18f7f5-4905-4127-870d-e0a6b0cddb11","shortId":"uwUayR","kind":"x402","title":"Check TWT (Trust Wallet Token) balance via x402-paid API on Base network.","tagline":"Check TWT (Trust Wallet Token) balance via x402-paid API on Base network.","description":"This endpoint at lowpaymentfee.com returns wallet balance information for TWT (Trust Wallet Token). It is part of a broader suite of pay-per-request APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.\n\nThe specific endpoint `/api/v1/wallet/TWT/balance` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, which uses 6 decimals), equating to $0.02 per request. The provider's landing page confirms a flat $0.02/request pricing model across all endpoints, with no API keys, no rate limits, and no minimum commitments required.\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 parameters the endpoint accepts or what fields the response contains. The endpoint is live (returns a proper 402 challenge), but without documentation it is unclear what input the POST body should contain (e.g., a wallet address) or what the response structure looks like.","tags":[],"capabilities":["wallet-balance-query","x402-payment","usdc-settlement","base-network","pay-per-request","trust-wallet-token"],"categories":["crypto","finance"],"synonyms":["TWT balance","Trust Wallet Token balance","wallet balance API","crypto balance check","token balance lookup","x402 crypto API","Base USDC API"],"warnings":["No API documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no technical content.","Request body schema is unknown; the example_request_json is speculative.","Response schema is completely unknown; no example_response_json can be provided.","The endpoint path suggests TWT-specific functionality but no details confirm what data is returned."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wallet/TWT/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/TWT/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 and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, documentation is essentially nonexistent — no OpenAPI spec, no request/response schema, no examples. The request body format and response structure are entirely inferred. This is effectively a stub 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'/api/v1/wallet/twt/balance':87 '/docs':151 '/pricing':153 '/readme':155 '/request':128 '0.02':116,127 '000':103 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':109 '20':102 '402':199 '6':112 'Base USDC API' 'TWT balance' 'Trust Wallet Token balance' 'accept':88,185 'across':131 'address':217 'advertis':97 'ai/ml':63 'analyt':62 'api':11,25,54,136 'asset':108 'balanc':6,20,35 'base':13,27,82,104 'base-network' 'bodi':211 'broader':47 'challeng':96,200 'check':1,15 'commit':144 'confirm':124 'connect':161 'contain':191,213 'cost':100 'crypto balance check' 'data':61,66 'decim':113 'descript':179 'detail':168 'document':146,203 'e.g':214 'endpoint':30,71,86,133,184,193 'equat':114 'exampl':176 'extrem':148 'field':188 'finance/web3':65 'flat':126 'infer':64 'inform':36 'input':208 'json':93 'key':137 'land':122 'like':224 'limit':140 'live':195 'look':223 'lowpaymentfee.com':32 'maximum':99 'minimum':143 'model':130 'network':14,28,83 'offer':55 'openapi':172 'page':123,156 'paid':10,24 'paramet':182 'part':44 'pay':51 'pay-per-request':50 'payment':75 'per':52,117 'post':89,210 'price':129 'prompt':163 'proper':198 'protocol':76 'provid':59,120 'rate':139 'render':158 'request':53,90,118 'request/response':175 'requir':145 'respons':190,221 'return':33,92,196 'schema':173 'servic':69 'settl':77 'span':60 'spars':149 'specif':85 'structur':222 'suit':48 'technic':167 'token':5,19,41 'token balance lookup' 'trust':3,17,39 'trust-wallet-token' 'twt':2,16,38 'unclear':206 'unit':105 'usdc':79,107 'usdc-settlement' 'use':72,111 'util':68 'via':7,21 'wallet':4,18,34,40,162,216 'wallet balance API' 'wallet-balance-query' 'without':202 'x402':9,23,74,95 'x402 crypto API' 'x402-paid':8,22 'x402-payment'","prices":[{"id":"3a74bc13-5fb0-4832-a3eb-083fbbd6c632","listingId":"2b18f7f5-4905-4127-870d-e0a6b0cddb11","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/TWT/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":"2026-04-18T19:28:20.925Z"}],"sources":[{"listingId":"2b18f7f5-4905-4127-870d-e0a6b0cddb11","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wallet/TWT/balance","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:20.925Z","lastSeenAt":"2026-04-23T11:04:02.596Z"}],"details":{"listingId":"2b18f7f5-4905-4127-870d-e0a6b0cddb11","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wallet/TWT/balance \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"address\": \"0xYourWalletAddress\"}'","exampleRequest":{"address":"0x1234567890abcdef1234567890abcdef12345678"},"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/TWT/balance"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (6 decimals), so 20000 base units = $0.02","source_url":"https://lowpaymentfee.com/api/v1/wallet/TWT/balance"},{"claim":"Provider advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Provider offers multiple API categories including Data & Analytics, AI & ML, Finance & Web3, and Infrastructure","source_url":"https://lowpaymentfee.com"}],"useCases":["Querying TWT token balance for a given wallet address","Integrating real-time token balance checks into portfolio dashboards","Automated monitoring of Trust Wallet Token holdings"],"bestFor":["Agents needing on-demand crypto wallet balance lookups without API key management","Developers wanting pay-per-call pricing with no subscription commitment","x402-compatible clients settling micropayments in USDC on Base"],"notFor":["Users needing detailed transaction history or multi-token batch queries (not documented)","Anyone requiring comprehensive API documentation or SDKs before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:32.441Z"},"updatedAt":"2026-04-23T11:04:02.596Z"}}