{"id":"689c31ad-d5e7-49fc-ade8-fc49216f362a","shortId":"gBPkGz","kind":"x402","title":"Pay-per-call token data API for MATIC via x402 on Base, $0.02/request in USDC.","tagline":"Pay-per-call token data API for MATIC via x402 on Base, $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides token data for MATIC (Polygon) through a pay-per-call x402 protocol. It is part of a broader platform offering dozens of endpoints across data & analytics, AI/ML, finance/Web3, and infrastructure categories — all priced uniformly at $0.02 per request, settled in USDC on the Base network. No API keys or rate limits are required; callers pay per request via the x402 payment header.\n\nThe specific endpoint `/api/v1/tokens/MATIC` sits within the Finance & Web3 category of the platform. The x402 challenge confirms the endpoint is live, accepting POST requests, and requires up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) per call. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the MATIC token endpoint actually returns. The platform landing page lists the endpoint categories and pricing but provides no technical detail about request parameters or response shapes.","tags":[],"capabilities":["token-data","matic-polygon","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key","crypto-market-data"],"categories":["finance","crypto"],"synonyms":["MATIC price","Polygon token data","crypto token API","MATIC market data","token quotes","x402 crypto API","micropayment API"],"warnings":["No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or JSON schema describing request parameters or response fields","Response format for /api/v1/tokens/MATIC is entirely unknown; cannot verify what data is returned","Platform appears to be a generic template with many listed endpoints but no verifiable technical detail"],"endpointUrl":"https://lowpaymentfee.com/api/v1/tokens/MATIC","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/tokens/MATIC","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 with clear pricing, but there is zero documentation on request parameters or response format. No OpenAPI spec, no examples, and all doc pages render only 'Connect wallet'. The actual data returned is 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'/request':15,32 '0.02':14,31,76,143 '000':132 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':151 '0x8335':137 '20':131 '2913':138 '300':154 '6':141 'MATIC market data' 'MATIC price' 'Polygon token data' 'accept':124 'across':64 'actual':197 'address':150 'ai/ml':67 'analyt':66 'api':7,24,87,163 'base':13,30,84,133,140 'base-network' 'broader':58 'call':4,21,50,145 'caller':94 'categori':71,112,206 'challeng':118 'confirm':119 'connect':172 'content':178 'crypto token API' 'crypto-market-data' 'data':6,23,41,65 'decim':142 'descript':189 'detail':213 'doc':162 'document':157 'dozen':61 'endpoint':36,63,105,121,196,205 'exampl':186 'extrem':159 'field':192 'financ':110 'finance/web3':68 'header':102 'infrastructur':70 'key':88 'land':201 'limit':91 'list':203 'live':123 'lowpaymentfee.com':38 'made':148 'matic':9,26,43,194 'matic-polygon' 'micropayment API' 'network':85 'no-api-key' 'offer':60 'openapi':182 'page':167,202 'paramet':216 'part':55 'pay':2,19,48,95 'pay-per-cal':1,18,47 'pay-per-call' 'payment':101,146 'per':3,20,49,77,96,144 'platform':59,115,200 'polygon':44 'post':125 'price':73,164,208 'prompt':174 'protocol':52 'provid':39,210 'rate':90 'readm':166 'render':169 'request':78,97,126,215 'request/response':185 'requir':93,128 'respons':218 'return':198 'schema':183 'second':155 'settl':79 'shape':219 'sit':107 'spars':160 'specif':104 'technic':212 'timeout':156 'token':5,22,40,195 'token quotes' 'token-data' 'uniform':74 'unit':134 'usdc':17,34,81,136 'usdc-settlement' 'via':10,27,98 'wallet':173 'web3':111 'within':108 'x402':11,28,51,100,117 'x402 crypto API' 'x402-payment'","prices":[{"id":"9d72369b-6e1c-4d79-bf8d-b4b2a4f693fd","listingId":"689c31ad-d5e7-49fc-ade8-fc49216f362a","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/tokens/MATIC","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:08.754Z"}],"sources":[{"listingId":"689c31ad-d5e7-49fc-ade8-fc49216f362a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/tokens/MATIC","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:08.754Z","lastSeenAt":"2026-04-24T03:02:52.517Z"}],"details":{"listingId":"689c31ad-d5e7-49fc-ade8-fc49216f362a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/tokens/MATIC \\\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":"Endpoint is live and returns x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/tokens/MATIC"},{"claim":"All endpoints 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":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/tokens/MATIC"}],"useCases":["Fetching current MATIC/Polygon token data on demand without managing API keys","Integrating MATIC token information into an agent workflow with per-call USDC payments","Building dashboards or bots that need ad-hoc crypto token lookups with no subscription commitment"],"bestFor":["Agents or apps needing occasional MATIC token data without subscription overhead","Developers who want keyless, pay-as-you-go crypto data access on Base","x402-native workflows that settle micropayments in USDC"],"notFor":["High-frequency trading requiring sub-second latency and guaranteed SLAs","Users who need detailed API documentation or response schema guarantees before integrating","Non-crypto use cases unrelated to token data"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:39.714Z"},"updatedAt":"2026-04-24T03:02:52.517Z"}}