{"uid":"cap_UdbXuCcbhS1y2ARcPwZSS","slug":"base-onchain-data-erc-20-whale-large-trade-tracker-72bceaf2","name":"Base Onchain Data – ERC-20 Whale & Large-Trade Tracker","description":"Whale and large-trade tracker for an ERC-20 on Base: every buy and sell in the last N minutes on the token's deepest WETH/USDC pools (Uniswap v3 or Aerodrome), with USD size, side, wallet and transaction for the largest trades, buy/sell volume and net flow, and the wallets that bought or sold the most.","url":"https://onchaincheck.dev/base/trades?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["token"],"properties":{"limit":{"type":"string","pattern":"^\\d{1,2}$","description":"Max trades listed, 1 to 40, default 20"},"token":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"Token contract address on Base"},"minUsd":{"type":"string","pattern":"^\\d+(\\.\\d+)?$","description":"Only list trades at least this large in USD, default 1000"},"minutes":{"type":"string","pattern":"^\\d{1,3}$","description":"Look-back window in minutes; 5 to 240, default 60 (capped at 12,000 blocks, about 50 minutes on Arbitrum)"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"chain":"base","notes":"Trades from the 3 deepest WETH/USDC pools; other pairs and aggregator-internal routes are not counted. Wallets are transaction senders, looked up for the 40 largest trades.","token":{"symbol":"DEGEN","address":"0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed","decimals":18},"window":{"to":"2026-10-22T16:22:57.000Z","from":"2026-10-22T15:22:57.000Z","minutes":60,"toBlock":52948415,"fromBlock":52946615},"summary":{"buys":20,"sells":1,"trades":21,"netFlowUsd":1223.35,"buyVolumeUsd":1223.4,"sellVolumeUsd":0.0558468,"largestTradeUsd":142.466},"nativeUsd":2396.4,"topBuyers":[{"netUsd":471.2,"trades":9,"wallet":"0x3dA47e29a82651171c57956A73F80b3905B8b230","soldUsd":0,"boughtUsd":471.2},{"netUsd":262.4,"trades":2,"wallet":"0x2342110f3Af09c848C104fdE3E7261Dc0C5C4d7a","soldUsd":0,"boughtUsd":262.4},{"netUsd":239.6,"trades":2,"wallet":"0x9CA5CAcb8CD8820415f7cA3C3C3cf7E23c885bd7","soldUsd":0,"boughtUsd":239.6},{"netUsd":142.3,"trades":1,"wallet":"0x2c2e035D20Cd6da1664a7Cf0EAf98e3647607304","soldUsd":0,"boughtUsd":142.3},{"netUsd":67.59,"trades":1,"wallet":"0x911E228d9105963b68af40880Ce8Dd6d5Ee8637E","soldUsd":0,"boughtUsd":67.59}],"topSellers":[{"netUsd":-0.05585,"trades":1,"wallet":"0xbdBeBD58cC8153Ce74530BB342427579315915B2","soldUsd":0.05585,"boughtUsd":0}],"largeTrades":[{"tx":"0x2079d9a6e334ecfb885c7f0144002d59e1c9030f4e34cf9f4a54968d91f11e4f","dex":"uniswap-v3","usd":142.466,"side":"buy","block":52946817,"wallet":"0x2342110f3Af09c848C104fdE3E7261Dc0C5C4d7a","approxTime":"2026-10-22T15:29:41.000Z","quoteAmount":0.05945,"quoteSymbol":"WETH","tokenAmount":149873.49},{"tx":"0x63e5e82b77986e25689e4e68c61044c15c8f5431038b1bfdaf72aa499401464b","dex":"uniswap-v3","usd":142.322,"side":"buy","block":52947027,"wallet":"0x2c2e035D20Cd6da1664a7Cf0EAf98e3647607304","approxTime":"2026-10-22T15:36:41.000Z","quoteAmount":0.05939,"quoteSymbol":"WETH","tokenAmount":149535.86},{"tx":"0x8b75da4612b49b617aa6f50ab419bbd80586557811e194b4ef74cc72a82c31da","dex":"uniswap-v3","usd":119.964,"side":"buy","block":52946821,"wallet":"0x2342110f3Af09c848C104fdE3E7261Dc0C5C4d7a","approxTime":"2026-10-22T15:29:49.000Z","quoteAmount":0.05006,"quoteSymbol":"WETH","tokenAmount":126158.12},{"tx":"0xdb03281dd3142dd5d095abc85539f60e32d9d424b56b601aca376ecd6563aeb5","dex":"uniswap-v3","usd":119.82,"side":"buy","block":52947027,"wallet":"0x9CA5CAcb8CD8820415f7cA3C3C3cf7E23c885bd7","approxTime":"2026-10-22T15:36:41.000Z","quoteAmount":0.05,"quoteSymbol":"WETH","tokenAmount":125923.21},{"tx":"0x54f59ce65722caa69d4d2c76254739354b3bbe109bb22fca6833370fff839065","dex":"uniswap-v3","usd":119.82,"side":"buy","block":52947027,"wallet":"0x9CA5CAcb8CD8820415f7cA3C3C3cf7E23c885bd7","approxTime":"2026-10-22T15:36:41.000Z","quoteAmount":0.05,"quoteSymbol":"WETH","tokenAmount":125863.06}],"poolsScanned":[{"dex":"uniswap-v3","pool":"0xc9034c3E7F58003E6ae0C8438e7c8f4598d5ACAA","pairedWith":"WETH"},{"dex":"uniswap-v3","pool":"0x0cA6485b7e9cF814A3Fd09d81672B07323535b64","pairedWith":"WETH"},{"dex":"aerodrome","pool":"0x2C4909355b0C036840819484c3A882A95659aBf3","pairedWith":"WETH"}]}},"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":"unknown","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_KT5j6TSlvw1uxkkRw2PHp","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 all buys and sells for an ERC-20 token on Base over the last N minutes, including USD size, side, wallet, transaction hash, buy/sell volume, net flow, and top buying/selling wallets.","exampleAgentPrompt":"Show me all whale trades over $2000 for the DEGEN token at 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed on Base in the last 60 minutes — I want to see the top buyers, net flow, and the largest individual transactions.","exampleUseCases":[{"title":"Spot unusual whale accumulation on a new Base token","prompt":"Check if there's been any whale buying activity above $5000 for the token at 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed on Base in the last 30 minutes — show me the top buyers and the net flow."},{"title":"Monitor sell pressure during a price drop","prompt":"I need to see all sells for the Base token 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed over the past 2 hours, with the top sellers and total sell volume in USD — let me know if the sell side is dominating."},{"title":"Pre-trade due diligence on token liquidity and activity","prompt":"Before I buy into this Base token at 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed, can you pull up the last 90 minutes of trading activity — how many trades happened, who's buying the most, and what's the largest single trade?"}],"resultDescription":"A JSON object with: chain identifier, token metadata (symbol, address, decimals), the query window (from/to timestamps and block range), a summary (buy/sell counts, total trades, buy/sell volume in USD, net flow, largest trade), ETH/USD price used for conversions, an ordered list of top buyers (wallet, trades, bought/sold/net USD), an ordered list of top sellers, and an array of large individual trades (tx hash, DEX, USD size, buy/sell side, block number, wallet, approximate timestamp, quote and token amounts). Covers the 3 deepest WETH/USDC pools on Uniswap v3 or Aerodrome.","failureModes":["Missing or invalid token address returns a validation error","minutes outside 5-240 range may be rejected or capped","token with no liquidity on tracked pools returns empty trade arrays","limit value outside 1-40 range rejected by pattern validation","minUsd set very high may return no trades even if activity exists","network issues or RPC timeouts may produce 5xx errors","very recent blocks may not yet be indexed"],"whenToPreferThis":"Choose this endpoint when you need on-chain trade-level detail for a specific ERC-20 on Base — who is buying/selling, how large, and which wallets dominate flow — rather than just price or balance data. Ideal for whale monitoring, momentum detection, sell-pressure analysis, and pre-trade due diligence on Base tokens. Use the Arbitrum sibling endpoint for the same analysis on Arbitrum One.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:42:41.831Z","isFirstParty":false,"canonicalSlug":"base-onchain-data-erc-20-whale-large-trade-tracker-72bceaf2"}