Beauty & Personal Care · x402 · early usage

Get Smart Money Historical Holdings Data

by api.nansen.ai · discovered, not yet claimed by its owner · updated 2026-10-01

30d calls3

30d payers2

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Get Smart Money Historical Holdings Data

Tags: crypto · analytics · smart-money · on-chain · bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-01

Input example from Bazaar metadata

{
  "chains": [
    "ethereum"
  ],
  "date_range": {
    "from": "2025-10-01",
    "to": "2025-10-31"
  },
  "filters": {
    "balance_24h_percent_change": {
      "max": 0.1,
      "min": -0.1
    },
    "exclude_smart_money_labels": [
      "30D Smart Trader"
    ],
    "include_native_tokens": false,
    "include_smart_money_labels": [
      "Fund",
      "Smart Trader"
    ],
    "include_stablecoins": false,
    "token_age_days": {
      "max": 30
    },
    "value_usd": {
      "max": 100000,
      "min": 1000
    }
  }
}

Output example

{
  "data": [],
  "pagination": {}
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/26565.json for the price and payment options.
Pay. Call GET https://api.nansen.ai/api/v1/smart-money/historical-holdings. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, eip155:196, eip155:56, eip155:143, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, eip155:196, eip155:56, eip155:143, Solana
Demand: 3 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.01	0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f	300s
exact	eip155:196 eip155:196	0x779Ded0c9e1022225f8E0630b35a9b54bE713736	10000	0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f	300s
exact	eip155:56 eip155:56	0xcE24439F2D9C6a2289F741120FE202248B666666	10000000000000000	0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f	300s
exact	eip155:56 eip155:56	0x8d0d000ee44948fc98c9b98a4fa4921476f08b0d	10000000000000000	0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f	300s
exact	eip155:56 eip155:56	0x55d398326f99059fF775485246999027B3197955	10000000000000000	0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f	300s
exact	eip155:56 eip155:56	0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d	10000000000000000	0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f	300s
exact	eip155:143 eip155:143	0x754704Bc059F8C67012fEd69BC8A327a5aafb603	10000	0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.01	J7ZvJEspvwP1oRxQZ7mYmNmT22NTm3GWq3t7HEbvPZYx	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:196",
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "asset": "0x779Ded0c9e1022225f8E0630b35a9b54bE713736",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:56",
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "asset": "0xcE24439F2D9C6a2289F741120FE202248B666666",
    "amount": "10000000000000000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:56",
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "asset": "0x8d0d000ee44948fc98c9b98a4fa4921476f08b0d",
    "amount": "10000000000000000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:56",
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "asset": "0x55d398326f99059fF775485246999027B3197955",
    "amount": "10000000000000000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:56",
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "asset": "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
    "amount": "10000000000000000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:143",
    "payTo": "0x93053f1e7A5eFEDa532Fe69CbbE43cBEc3A0F13f",
    "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "J7ZvJEspvwP1oRxQZ7mYmNmT22NTm3GWq3t7HEbvPZYx",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "data": {
          "items": {
            "properties": {
              "balance": {
                "type": "number"
              },
              "balance_24h_percent_change": {
                "type": "number"
              },
              "chain": {
                "type": "string"
              },
              "date": {
                "type": "string"
              },
              "holders_count": {
                "type": "integer"
              },
              "market_cap_usd": {
                "type": "number"
              },
              "share_of_holdings_percent": {
                "type": "number"
              },
              "smart_money_labels": {
                "type": "array"
              },
              "token_address": {
                "type": "string"
              },
              "token_age_days": {
                "type": "integer"
              },
              "token_sectors": {
                "type": "array"
              },
              "token_symbol": {
                "type": "string"
              },
              "value_usd": {
                "type": "number"
              }
            },
            "required": [
              "date",
              "chain",
              "token_address",
              "token_symbol",
              "token_sectors",
              "smart_money_labels",
              "holders_count",
              "token_age_days"
            ],
            "type": "object"
          },
          "type": "array"
        },
        "pagination": {
          "properties": {
            "is_last_page": {
              "type": "boolean"
            },
            "page": {
              "type": "integer"
            },
            "per_page": {
              "type": "integer"
            }
          },
          "type": "object"
        }
      },
      "required": [
        "data",
        "pagination"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "data": [
      {
        "balance": 0,
        "balance_24h_percent_change": 0,
        "chain": "string",
        "date": "string",
        "holders_count": 0,
        "market_cap_usd": 0,
        "share_of_holdings_percent": 0,
        "smart_money_labels": [
          "value"
        ],
        "token_address": "string",
        "token_age_days": 0,
        "token_sectors": [
          "value"
        ],
        "token_symbol": "string",
        "value_usd": 0
      }
    ],
    "pagination": {
      "is_last_page": true,
      "page": 0,
      "per_page": 0
    }
  },
  "type": "string"
}

Examples

curl

curl -X POST 'https://api.nansen.ai/api/v1/smart-money/historical-holdings' -H 'Content-Type: application/json' --data '{"chains":["ethereum"],"date_range":{"from":"2025-10-01","to":"2025-10-31"},"filters":{"balance_24h_percent_change":{"max":0.1,"min":-0.1},"exclude_smart_money_labels":["30D Smart Trader"],"include_native_tokens":false,"include_smart_money_labels":["Fund","Smart Trader"],"include_stablecoins":false,"token_age_days":{"max":30},"value_usd":{"max":100000,"min":1000}}}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://api.nansen.ai/api/v1/smart-money/historical-holdings", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{\"chains\":[\"ethereum\"],\"date_range\":{\"from\":\"2025-10-01\",\"to\":\"2025-10-31\"},\"filters\":{\"balance_24h_percent_change\":{\"max\":0.1,\"min\":-0.1},\"exclude_smart_money_labels\":[\"30D Smart Trader\"],\"include_native_tokens\":false,\"include_smart_money_labels\":[\"Fund\",\"Smart Trader\"],\"include_stablecoins\":false,\"token_age_days\":{\"max\":30},\"value_usd\":{\"max\":100000,\"min\":1000}}}"
});
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
import json
res = httpx.request("POST", "https://api.nansen.ai/api/v1/smart-money/historical-holdings", json=json.loads("{\"chains\":[\"ethereum\"],\"date_range\":{\"from\":\"2025-10-01\",\"to\":\"2025-10-31\"},\"filters\":{\"balance_24h_percent_change\":{\"max\":0.1,\"min\":-0.1},\"exclude_smart_money_labels\":[\"30D Smart Trader\"],\"include_native_tokens\":false,\"include_smart_money_labels\":[\"Fund\",\"Smart Trader\"],\"include_stablecoins\":false,\"token_age_days\":{\"max\":30},\"value_usd\":{\"max\":100000,\"min\":1000}}}"))
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: api.nansen.ai
Endpoint: https://api.nansen.ai/api/v1/smart-money/historical-holdings
Machine-readable: /resources/26565.json