{"id":"1f9e2682-b92f-4a50-8034-a68702b34e81","shortId":"j3Ju6m","kind":"x402","title":"x402-payable token data endpoint for COMP on Base, $0.02 per request via USDC.","tagline":"x402-payable token data endpoint for COMP on Base, $0.02 per request via USDC.","description":"This endpoint at lowpaymentfee.com provides token data for COMP (Compound) via an x402 payment-gated API. It is part of a broader platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure utility endpoints, all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/tokens/COMP` returns JSON and is accessed via HTTP POST. Payment is handled through the x402 protocol: callers receive a 402 challenge containing payment details (pay-to address, asset, amount) and must include an `X-PAYMENT` header with a valid payment proof. The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys, rate limits, or upfront commitments are required.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns a proper x402 challenge), but the exact shape of the response data for COMP token information is unknown and must be inferred from the endpoint path and the platform's \"Finance & Web3\" category description.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","token-data","crypto-market-data","per-request-pricing","no-api-key"],"categories":["finance","crypto"],"synonyms":["COMP token data","Compound token price","crypto token API","x402 token endpoint","pay-per-call crypto API","COMP market data","lowpaymentfee"],"warnings":["No API documentation available — docs, pricing, README pages all show only 'Connect wallet'","No OpenAPI or schema definition; request body and response format are completely undocumented","Response content for /api/v1/tokens/COMP is unknown — data fields, freshness, and source are not specified","Platform appears to be a generic multi-category API storefront; quality and reliability of underlying data sources are unverifiable"],"endpointUrl":"https://lowpaymentfee.com/api/v1/tokens/COMP","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/COMP","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 with a valid x402 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no examples, and all documentation pages are empty beyond a wallet-connect prompt. The actual data returned is entirely 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'0.02':11,26,68,140 '000':131 '20':130 '402':101 '6':136 'COMP market data' 'COMP token data' 'Compound token price' 'access':87 'addit':174 'address':109 'ai/ml':58 'amount':111,127 'analyt':57 'api':47,142,160 'asset':110 'avail':190 'base':10,25,77,132 'base-network' 'broader':53 'caller':98 'categori':229 'challeng':102,200 'commit':148 'comp':8,23,39,210 'compound':40 'confirm':194 'connect':169 'contain':103 'crypto token API' 'crypto-market-data' 'data':5,20,37,56,208 'decim':137 'descript':230 'detail':105,176 'doc':159 'document':151,185 'endpoint':6,21,32,64,81,192,221 'equal':139 'exact':203 'exampl':188 'extrem':156 'financ':227 'finance/web3':60 'gate':46 'handl':93 'header':119 'http':89 'includ':114 'infer':59,218 'inform':212 'infrastructur':62 'json':84 'key':143 'limit':145 'live':195 'lowpaymentfee' 'lowpaymentfee.com':34 'max':126 'must':113,216 'network':78 'no-api-key' 'offer':55 'openapi':180 'page':164 'part':50 'path':222 'pay':107 'pay-per-call crypto API' 'pay-to':106 'payabl':3,18 'payload':189 'payment':45,91,104,118,123 'payment-g':44 'per':12,27,69 'per-request-pricing' 'platform':54,225 'post':90 'price':66,161 'prompt':171 'proof':124 'proper':198 'protocol':97 'provid':35 'rate':144 'readm':163 'receiv':99 'render':166 'request':13,28,70 'request/response':183 'requir':128,150 'respons':207 'return':83,196 'schema':184 'settl':72 'shape':204 'site':154 'spars':157 'spec':181 'specif':80 'technic':175 'token':4,19,36,211 'token-data' 'unit':133 'unknown':214 'upfront':147 'usdc':15,30,74,135 'usdc-settlement' 'util':63 'valid':122 'via':14,29,41,88 'wallet':170 'web3':228 'x':117 'x-payment':116 'x402':2,17,43,96,199 'x402 token endpoint' 'x402-payable':1,16 'x402-payment'","prices":[{"id":"545eb175-7c07-4540-9200-54d6685f6aad","listingId":"1f9e2682-b92f-4a50-8034-a68702b34e81","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/COMP","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:34:57.554Z"}],"sources":[{"listingId":"1f9e2682-b92f-4a50-8034-a68702b34e81","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/tokens/COMP","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:57.554Z","lastSeenAt":"2026-04-24T12:02:46.920Z"}],"details":{"listingId":"1f9e2682-b92f-4a50-8034-a68702b34e81","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/tokens/COMP \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/tokens/COMP"},{"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 address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/tokens/COMP"},{"claim":"Platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure endpoint categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching current COMP (Compound) token data or quotes programmatically","Integrating pay-per-request token data into trading bots or dashboards","Agent-driven lookups of COMP token information without API key management"],"bestFor":["Agents or bots needing on-demand COMP token data with no subscription","Developers who want x402 crypto-native pay-per-call access","Low-volume or sporadic token data lookups at $0.02 each"],"notFor":["High-frequency trading requiring sub-second latency guarantees (no SLA documented)","Users needing detailed historical OHLCV or order-book data (response schema unknown)","Anyone requiring comprehensive API documentation before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:52.157Z"},"updatedAt":"2026-04-24T12:02:46.920Z"}}