# Arkham Intelligence – Wallet Balance History by Address

> Arkham Intelligence – Wallet Balance History by Address is a paid API for AI agents from api.arkm.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-09-14).

Returns daily USD balance history for a blockchain address across multiple chains (e.g. Ethereum, BSC)

## Facts

- Endpoint: POST https://api.arkm.com/x402/history/address
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arkham-intelligence-wallet-balance-history-by-address-8ec26554
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w_o535R9XHCYsauGGmuzW

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability arkham-intelligence-wallet-balance-history-by-address-8ec26554 -d '<json body>'
```

Example prompt: Pull the historical daily USD balance for wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum and BSC from Arkham so I can see how its holdings have changed over the past month.

## When to prefer this

Choose this endpoint when you need time-series USD balance history for a specific wallet address across one or more EVM-compatible chains. It is ideal for portfolio audits, whale tracking, due diligence investigations, or detecting unusual balance movements. Prefer this over generic block explorers when you want aggregated multi-chain USD valuations in a single structured response. Use Arkham specifically when on-chain identity intelligence and labeled address data is important context.

## Known failure modes

- Invalid or malformed wallet address returns an error or empty result
- Address with no on-chain activity returns empty arrays
- Unsupported chain identifier causes missing data or error
- Insufficient USDC balance for x402 payment results in 402 Payment Required response
- Rate limiting or authentication failure if API key is invalid
- Date range with no data returns empty arrays for the requested period

## How this service works

Get Arkham historical data for an address. $0.20 per call.

## Output

A JSON object keyed by blockchain name (e.g. 'ethereum', 'bsc'), each containing an array of daily balance snapshots with a USD value and ISO 8601 timestamp. For example: {"ethereum": [{"usd": 2524608983.37, "time": "2023-11-29T00:00:00Z"}, ...], "bsc": [...]}

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chains": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "Chains to filter by, as a single comma-separated value (e.g. 'ethereum,bsc'). If omitted, returns data across all suppo…"
  },
  "address": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "The blockchain address to query historical data for."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "bsc": [
   {
    "usd": 2844820.37,
    "time": "2023-12-13T00:00:00Z"
   },
   {
    "usd": 3174696.58,
    "time": "2023-12-14T00:00:00Z"
   }
  ],
  "ethereum": [
   {
    "usd": 2524608983.37,
    "time": "2023-11-29T00:00:00Z"
   },
   {
    "usd": 2535428111.78,
    "time": "2023-11-30T00:00:00Z"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arkham-intelligence-wallet-balance-history-by-address-8ec26554/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.arkm.com](https://www.zero.xyz/host/api.arkm.com/llms.txt)