{"id":"68bea16f-d959-43f0-acc2-957bd819f7f7","shortId":"nGgepe","kind":"mpp","title":"Daily historical snapshots of aggregated smart money token holdings with up to 4 years lookback","tagline":"Daily historical snapshots of aggregated smart money token holdings with up to 4 years lookback","description":"This endpoint returns historical daily snapshots of aggregated token balances held by smart traders and funds across multiple blockchains (Ethereum, Base, BNB, Monad, Solana). It provides time-series data for trend analysis, backtesting, and performance attribution of smart money behavior. Each snapshot includes token balance, USD value, 24h balance change, holder count, share of total holdings, token age, and market cap at the snapshot date.\n\nThe endpoint is part of the Nansen API v1 Smart Money suite. It accepts POST requests with a date range (YYYY-MM-DD format, max 4 years lookback), chain selection, and optional filters for smart money labels (Fund, Smart Trader, 30D/90D/180D Smart Trader), stablecoin/native token inclusion, token address/symbol, balance ranges, holder counts, market cap, and token age. Results are paginated (up to 1000 per page) and sortable by date, value, balance change, holders count, and other fields.\n\nPricing is $0.01 per call via the x402 protocol, or 10 credits (free tier) / 1 credit (pro tier) when using Nansen API key authentication. The endpoint returns 402 Payment Required for unauthenticated callers, which is the standard x402 payment challenge. Rate limits are enforced per-second and per-minute, reported via response headers.","tags":["blockchain","smart-money","wallet","tokens","defi","analytics","profiler","dex","pnl","onchain","prediction-market"],"capabilities":["smart-money-historical-holdings","daily-balance-snapshots","multi-chain-analytics","token-trend-analysis","backtesting-data","smart-money-filtering","date-range-query","paginated-results","sortable-output","x402-payment"],"categories":["blockchain-analytics","defi","data"],"synonyms":["smart money history","historical token holdings","smart money balance snapshots","nansen historical holdings","smart money trend data","fund holdings over time","smart trader portfolio history","on-chain intelligence historical"],"warnings":["Nansen docs pages (/docs, /pricing) returned 404 — documentation may have moved or be hosted elsewhere","Response schema references ($ref) were not fully resolved in the probe; example response is inferred from schema definitions"],"endpointUrl":"https://api.nansen.ai/api/v1/smart-money/historical-holdings","protocol":"mpp","transport":"http","auth":{"type":"mpp","details":{"realm":"api.nansen.ai","intent":"charge","method":"tempo","service_methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}}}},"qualityScore":"0.880","qualityRationale":"Full OpenAPI 3.1 schema with detailed request/response models, clear endpoint description with use cases, explicit pricing ($0.01 via x402), and live 402 challenge confirmed. Minor deduction because no actual response example was captured from the probe (only schema), and crawled docs pages returned 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