{"id":"533b99ca-660d-4957-ba38-b06d20432e58","shortId":"Tx8gtE","kind":"x402","title":"Token chart analytics for Base chain tokens, paid per-call via x402 in USDC or USDT.","tagline":"Token chart analytics for Base chain tokens, paid per-call via x402 in USDC or USDT.","description":"This endpoint provides crypto token chart data on the Base network (eip155:8453). You send a POST request with a token contract address and receive chart/analytics data in return. The endpoint is gated by the x402 payment protocol (version 2), requiring a per-call micropayment of $0.01 (10,000 base units of USDC on Base or USDT on Tron) before the response is served.\n\nThe service is operated by Erudite Intelligence LLC, which also runs the EruditePay x402 Bridge facilitator. Payment can be settled through Coinbase CDP's x402 facilitator on Base (USDC) or directly on Tron (USDT). The endpoint accepts a JSON body with a single field — `token` — which takes a token contract address or symbol. The response is JSON with a `success` boolean and a `data` object, though the exact structure of the chart data is not documented beyond the example stub `{\"success\": true, \"data\": {}}`.\n\nDocumentation is sparse: there is no OpenAPI spec, no dedicated docs page (the /docs path returns a 404), and the only schema available is the inline Bazaar extension embedded in the 402 challenge. The endpoint is live and responds with a valid x402 v2 challenge, but the lack of detailed output documentation means consumers should expect to discover the response shape empirically.","tags":[],"capabilities":["token-chart-data","crypto-analytics","x402-payment","base-chain","tron-payment","usdc","usdt","per-call-micropayment"],"categories":["crypto","analytics"],"synonyms":["token price chart","crypto chart API","token analytics","DeFi token data","Base token chart","on-chain analytics","token price history"],"warnings":["No OpenAPI or dedicated documentation available; /docs returns 404","Output example is a stub — the actual shape of the 'data' object in the response is undocumented","Description says 'Crypto data intelligence' but specifics of what chart data is returned are unclear","Only tested via probe; actual paid response content is unverified"],"endpointUrl":"https://bridge.eruditepay.com/v1/base/analytics/token-chart","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x24c5da6267AEbEBfCBf7B325753C5B2538A5B09B","amount":"3000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","extra":{"name":"TronTransferAuthorization","version":"1","wrapper":"THGkLBrLY1G5VovZjjK1jP9upyxRdMNL3b"},"payTo":"TSevuRZFjpckeMSSDhQFoiAkPCkckuE5TP","amount":"3000","scheme":"exact","network":"tron:728126428","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live and returns a valid x402 v2 challenge with clear pricing and payment options. However, documentation is very sparse — no OpenAPI spec, no docs page, and the output schema is only a stub example with an empty data object. The actual chart data structure is 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'0.01':82 '000':84 '10':83 '2':74 '402':214 '404':200 '8453':47 'Base token chart' 'DeFi token data' 'accept':136 'address':57,150 'also':109 'analyt':3,20 'avail':205 'base':5,22,44,85,90,127 'base-chain' 'bazaar':209 'beyond':176 'bodi':139 'boolean':160 'bridg':114 'call':11,28,79 'cdp':122 'chain':6,23 'challeng':215,227 'chart':2,19,40,171 'chart/analytics':60 'coinbas':121 'consum':236 'contract':56,149 'crypto':38 'crypto chart API' 'crypto-analytics' 'data':41,61,163,172,182 'dedic':192 'detail':232 'direct':130 'discov':240 'doc':193 'document':175,183,234 'eip155':46 'embed':211 'empir':244 'endpoint':36,65,135,217 'erudit':105 'eruditepay':112 'exact':167 'exampl':178 'expect':238 'extens':210 'facilit':115,125 'field':143 'gate':67 'inlin':208 'intellig':106 'json':138,156 'lack':230 'live':219 'llc':107 'mean':235 'micropay':80 'network':45 'object':164 'on-chain analytics' 'openapi':189 'oper':103 'output':233 'page':194 'paid':8,25 'path':197 'payment':71,116 'per':10,27,78 'per-cal':9,26,77 'per-call-micropayment' 'post':51 'protocol':72 'provid':37 'receiv':59 'request':52 'requir':75 'respond':221 'respons':97,154,242 'return':63,198 'run':110 'schema':204 'send':49 'serv':99 'servic':101 'settl':119 'shape':243 'singl':142 'spars':185 'spec':190 'structur':168 'stub':179 'success':159,180 'symbol':152 'take':146 'though':165 'token':1,7,18,24,39,55,144,148 'token analytics' 'token price chart' 'token price history' 'token-chart-data' 'tron':94,132 'tron-payment' 'true':181 'unit':86 'usdc':15,32,88,128 'usdt':17,34,92,133 'v2':226 'valid':224 'version':73 'via':12,29 'x402':13,30,70,113,124,225 'x402-payment'","prices":[{"id":"e9a1e92f-c5bb-4dfc-9099-1527e6c59c41","listingId":"533b99ca-660d-4957-ba38-b06d20432e58","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x24c5da6267AEbEBfCBf7B325753C5B2538A5B09B","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x24c5da6267AEbEBfCBf7B325753C5B2538A5B09B","amount":"3000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t","extra":{"name":"TronTransferAuthorization","version":"1","wrapper":"THGkLBrLY1G5VovZjjK1jP9upyxRdMNL3b"},"payTo":"TSevuRZFjpckeMSSDhQFoiAkPCkckuE5TP","amount":"3000","scheme":"exact","network":"tron:728126428","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:36.604Z"}],"sources":[{"listingId":"533b99ca-660d-4957-ba38-b06d20432e58","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/analytics/token-chart","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:36.604Z","lastSeenAt":"2026-04-22T10:33:13.194Z"}],"details":{"listingId":"533b99ca-660d-4957-ba38-b06d20432e58","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/analytics/token-chart \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"token\": \"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\"}'","exampleRequest":{"token":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"},"exampleResponse":{"data":{},"success":true},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns x402 v2 challenge with USDC on Base (10000 base units = $0.01) and USDT on Tron (10000 base units = $0.01)","source_url":"https://bridge.eruditepay.com/v1/base/analytics/token-chart"},{"claim":"Provider is Erudite Intelligence LLC, FinCEN MSB registered (BSA ID 31000324258137)","source_url":"https://bridge.eruditepay.com"},{"claim":"EruditePay Bridge supports 20 blockchains and charges 0.5% per settlement","source_url":"https://bridge.eruditepay.com"},{"claim":"Coinbase CDP x402 facilitator is listed in the payment challenge","source_url":"https://bridge.eruditepay.com/v1/base/analytics/token-chart"}],"useCases":["Retrieve historical or chart data for a specific token on Base chain","Build dashboards that display token price charts sourced from on-chain data","Agent-driven portfolio analysis that fetches token chart information on demand","Automated trading bots that need chart analytics before executing trades"],"bestFor":["AI agents needing pay-per-call token chart data without API key management","Developers building crypto dashboards on Base chain","x402-native applications that settle micropayments in USDC or USDT"],"notFor":["Free or high-volume bulk data ingestion (each call costs $0.01)","Multi-chain analytics beyond Base (endpoint is scoped to Base)","Users who need detailed documentation or guaranteed response schemas before integrating"],"kindDetails":{},"updatedAt":"2026-04-22T01:53:43.474Z"}}