{"id":"520241a8-673c-4665-9aa6-18450dfba177","shortId":"Ze54t9","kind":"x402","title":"353 pay-per-call blockchain analytics endpoints across Base, Tron, Bitcoin, XRP, and Kaspa via x402.","tagline":"353 pay-per-call blockchain analytics endpoints across Base, Tron, Bitcoin, XRP, and Kaspa via x402.","description":"EruditePay x402 Facilitator exposes 353 x402-payable blockchain analytics endpoints covering Base, Tron, Bitcoin, XRP, and Kaspa. The specific endpoint listed here — /v1/pay/rates — returns current USDC/USDT prices and gas estimates. It is one endpoint within a much larger API surface that includes wallet profiling, token prices and OHLCV history, DEX quotes and trades, whale tracking, stablecoin analytics, NFT metadata, DeFi TVL and yield data, sanctions checks, MEV detection, cross-chain bridge quotes, arbitrage opportunities, token security audits, and merchant payment processing.\n\nPayment is handled via the x402 protocol. Each call requires a micropayment in USDC on Base (eip155:8453) or USDT on Tron. Prices range from $0.001 per call for lightweight lookups (gas prices, block data, token prices) up to $0.10 for premium intelligence reports (wallet risk profiles). Bundle tokens are also available: $0.10 for 60 seconds of unlimited gas oracle access, or $0.50 for 60 seconds of all intel endpoints. The facilitator URL is https://bridge.eruditepay.com, which also serves the OpenAPI spec and x402 discovery document.\n\nThe API is organized by chain (Base, Tron, cross-chain) and by domain (wallet, token, DEX, DeFi, exchange flows, monitoring, contracts, market data, bridging, payments). All endpoints return 402 with payment details when called without payment. The operator is Erudite Intelligence LLC, a FinCEN-registered MSB (BSA ID 31000324258137). Settlement is non-custodial at 0.5% per successful settlement.","tags":[],"capabilities":["blockchain-analytics","token-price","wallet-balance","dex-quote","defi-tvl","whale-tracking","nft-metadata","sanctions-check","token-security-audit","cross-chain-bridge","stablecoin-analytics","mev-detection","gas-estimation","exchange-flow","smart-money-tracking","arbitrage-detection","x402-payment","multi-chain"],"categories":["blockchain","defi","crypto"],"synonyms":["blockchain API","crypto analytics","on-chain data","Base chain API","Tron API","token price API","wallet analytics","DeFi yields","whale alerts","x402 micropayment API"],"warnings":["The /v1/pay/rates endpoint returned HTTP 502 on both GET and POST probes rather than the expected 402 challenge — it may be temporarily unavailable or misconfigured.","No example response bodies are provided in the OpenAPI spec for any endpoint.","The endpoint URL in the listing (x402.eruditepay.com) differs from the server URL in the OpenAPI spec (bridge.eruditepay.com); the bridge URL appears to be the actual API host.","Crawled /docs, /api, /pricing, /README pages all returned 'Cannot GET' errors — documentation beyond the landing page and OpenAPI spec is unavailable."],"endpointUrl":"https://x402.eruditepay.com/v1/pay/rates","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"1000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.750","qualityRationale":"Full OpenAPI 3.1 spec with 353 endpoints, clear per-call pricing in human-readable USD, and detailed parameter schemas. However, the specific /v1/pay/rates endpoint returned 502 on probe (not a clean 402), no example response bodies are provided in the spec, and the crawled docs pages returned 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'0.001':143 '0.10':157,170 '0.5':260 '0.50':180 '31000324258137':253 '353':1,18,39 '402':232 '60':172,182 '8453':135 'Base chain API' 'DeFi yields' 'Tron API' 'access':178 'across':9,26 'also':168,194 'analyt':7,24,44,92 'api':74,204 'arbitrag':109 'arbitrage-detection' 'audit':113 'avail':169 'base':10,27,47,133,209 'bitcoin':12,29,49 'block':151 'blockchain':6,23,43 'blockchain API' 'blockchain-analytics' 'bridg':107,227 'bridge.eruditepay.com':192 'bsa':251 'bundl':165 'call':5,22,126,145,237 'chain':106,208,213 'check':101 'contract':224 'cover':46 'cross':105,212 'cross-chain':104,211 'cross-chain-bridge' 'crypto analytics' 'current':60 'custodi':258 'data':99,152,226 'defi':95,220 'defi-tvl' 'detail':235 'detect':103 'dex':85,219 'dex-quote' 'discoveri':201 'document':202 'domain':216 'eip155':134 'endpoint':8,25,45,55,69,187,230 'erudit':243 'eruditepay':35 'estim':65 'exchang':221 'exchange-flow' 'expos':38 'facilit':37,189 'fincen':248 'fincen-regist':247 'flow':222 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'token-price' 'token-security-audit' 'track':90 'trade':88 'tron':11,28,48,139,210 'tvl':96 'unlimit':175 'url':190 'usdc':131 'usdc/usdt':61 'usdt':137 'via':16,33,121 'wallet':78,162,217 'wallet analytics' 'wallet-balance' 'whale':89 'whale alerts' 'whale-tracking' 'within':70 'without':238 'x402':17,34,36,41,123,200 'x402 micropayment API' 'x402-payable':40 'x402-payment' 'xrp':13,30,50 'yield':98","prices":[{"id":"b6c46561-5f79-477c-8843-75719a8d0510","listingId":"520241a8-673c-4665-9aa6-18450dfba177","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"1000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:36.061Z"}],"sources":[{"listingId":"520241a8-673c-4665-9aa6-18450dfba177","source":"x402_bazaar","sourceId":"https://x402.eruditepay.com/v1/pay/rates","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:36.061Z","lastSeenAt":"2026-04-22T10:03:15.512Z"}],"details":{"listingId":"520241a8-673c-4665-9aa6-18450dfba177","quickStartSnippet":"curl -X GET https://bridge.eruditepay.com/v1/pay/rates\n# Returns 402 with x402 payment requirements.\n# Pay with USDC on Base to receive current USDC/USDT prices and gas estimates.","exampleRequest":null,"exampleResponse":null,"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"353 x402-payable blockchain analytics endpoints across Base, Tron, Bitcoin, XRP, and Kaspa","source_url":"https://x402.eruditepay.com"},{"claim":"Payment accepted in USDC on Base (eip155:8453) or USDT on Tron","source_url":"https://x402.eruditepay.com"},{"claim":"Facilitator URL is https://bridge.eruditepay.com","source_url":"https://x402.eruditepay.com"},{"claim":"0.5% per successful settlement, verification is free","source_url":"https://x402.eruditepay.com"},{"claim":"FinCEN MSB registered, BSA ID 31000324258137","source_url":"https://x402.eruditepay.com"},{"claim":"Operator is Erudite Intelligence LLC","source_url":"https://x402.eruditepay.com"},{"claim":"20 supported blockchains for the facilitator","source_url":"https://x402.eruditepay.com"},{"claim":"/v1/pay/rates returns current USDC/USDT prices and gas estimates, priced at $0.001 per call","source_url":"https://x402.eruditepay.com"}],"useCases":["AI agents querying real-time token prices, gas costs, and wallet balances across Base and Tron","Compliance bots running OFAC sanctions checks and address risk scoring before processing transactions","Trading bots monitoring whale movements, DEX arbitrage opportunities, and volume anomalies","DeFi dashboards aggregating TVL, lending rates, and yield opportunities across protocols","Developers building pay-per-call blockchain data services without API key management"],"bestFor":["Agent-native pay-per-call blockchain data access without subscriptions","Multi-chain analytics spanning Base, Tron, Bitcoin, XRP, and Kaspa","Low-cost micropayment access starting at $0.001 per call","Token security audits, rug-pull scoring, and honeypot detection"],"notFor":["High-frequency trading requiring sub-second latency (x402 payment overhead per call)","Historical bulk data exports or full chain indexing","Chains not covered (e.g., Avalanche, Arbitrum, Polygon are not listed)"],"kindDetails":{},"updatedAt":"2026-04-22T01:46:15.349Z"}}