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Nansen AI - Smart Money Historical Token Balances
x402finance
Nansen AI - Smart Money Historical Token Balances is a paid API for AI agents from api.nansen.ai, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Retrieves historical token balance data for smart money addresses tracked by Nansen's 500M+ labeled address dataset
Price / call$0.25
Success—
StatusUnknown
How this service works
**Beta — subject to breaking changes.** Point-in-time smart money token balance aggregates for a given date. Returns SM token holdings per (chain, token_address) pair filtered by SM labels, token type, and chain. Includes 24h balance change, holder counts, share of total SM holdings, and historical market cap.
Output
Returns time-series snapshots of token balances held by the queried address, including token amounts, asset identifiers, and timestamps — sourced from Nansen's dataset of 500M+ labeled smart money addresses.
Example use cases
Example prompt
“Show me the historical token balances for Ethereum address 0xabc123 over the past 90 days — I want to see how their holdings in USDC and ETH changed over time using Nansen's smart money data.”
Technical details
Endpoint
GEThttps://api.nansen.ai/api/v1beta1/smart-money/historical-token-balancesWhen to prefer
Use this endpoint when you need on-chain historical token balance data specifically filtered through or attributed to Nansen's smart money address labels. Ideal for understanding how sophisticated or institutional wallets have changed their holdings over time, rather than just current positions. Prefer this over generic blockchain explorers when smart money context and label enrichment matter.
Side effects
- Invalid or unrecognized wallet address returns 400 error
- Address not found in Nansen's labeled dataset returns empty results
- Unsupported chain or token returns 404 or empty response
- Date range too large may result in timeout or partial data
- Missing required query parameters returns 422 validation error
- Rate limiting or insufficient payment returns 402 or 429 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chains | array | Chains to include. Empty list returns all chains. |
| filters | — | Optional filters for SM labels and token types |
| as_of_daterequired | string | Date to query balances for |
| pagination | object | Pagination parameters for API requests. |
| apply_blacklist_filter | boolean | When True, exclude blacklisted addresses from the results. Defaults to True. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | array | List of SM token balance records |
| paginationrequired | object | Pagination information for API responses. |
Tags
x402finance
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