{"uid":"cap_MXGa3SKAhyGpO6tvCc_vT","slug":"4sec-cumulative-volume-delta-cvd-crypto-market-data-api-981d0d59","name":"4SEC Cumulative Volume Delta (CVD) Crypto Market Data API","description":"Real-time multi-DEX aggregated crypto market data. Pay per request with USDC on Base via x402 protocol.","url":"https://api.foursec.xyz/cvd/%7Bsymbol%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"object","example":{"cvd":{"type":"number"},"signal":{"type":"string"},"symbol":{"type":"string"},"timestamp":{"type":"string","format":"date-time"},"buy_volume":{"type":"number"},"period_cvd":{"type":"number"},"sell_volume":{"type":"number"},"active_ws_connections":{"type":"integer"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Ba_km_fHNE4vdjdvMr3-h","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time cumulative volume delta (CVD) and buy/sell volume data for a given crypto token symbol aggregated across multiple DEXes","exampleAgentPrompt":"What's the current cumulative volume delta and buy/sell signal for ETH right now across DEXes?","exampleUseCases":[{"title":"Real-time DEX sentiment check","prompt":"Can you pull the current CVD and trading signal for SOL — I want to know if there's more buy or sell pressure on decentralized exchanges right now?"},{"title":"Algorithmic trading signal ingestion","prompt":"Fetch the latest cumulative volume delta for PEPE and tell me whether the signal is bullish or bearish based on buy versus sell volume."},{"title":"DeFi portfolio monitoring","prompt":"I want to keep an eye on ARB — can you get me the current CVD, buy volume, sell volume, and any signal coming from the multi-DEX data?"}],"resultDescription":"A JSON object containing: the token symbol, a cumulative volume delta (CVD) value, a period CVD, buy volume, sell volume, a trading signal string (e.g. bullish/bearish), a timestamp, and the number of active WebSocket connections feeding the aggregation.","failureModes":["Unknown or unsupported token symbol returns an error or empty result","Payment failure via x402 protocol results in 402 Payment Required response","Network or DEX data feed outage may cause stale or missing data","Malformed symbol input may return a 400 Bad Request","Rate limiting or USDC balance exhaustion blocks subsequent calls"],"whenToPreferThis":"Choose this endpoint when you need real-time on-chain CVD data aggregated across multiple DEXes for a specific crypto token, especially for trading signal generation, order flow analysis, or DeFi market monitoring. It is particularly useful when you need buy/sell volume pressure metrics rather than simple price data, and when pay-per-request billing via USDC on Base (x402) is acceptable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T14:25:03.101Z","isFirstParty":false}