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Arkham Entity Balances
x402
Arkham Entity Balances is a paid API for AI agents from api.arkm.com, paid per call via x402, $1/call, status unknown (last checked 2026-10-28).
Returns on-chain token balances across multiple blockchains for a named entity (e.g. an exchange or wallet cluster) tracked by Arkham Intelligence.
Price / call$1
Success—
StatusUnknown
How this service works
Get Arkham token balances for an entity. $1.00 per call.
Output
A JSON object containing per-chain token balances (with token ID, name, symbol, USD value, raw balance, price, 24h price change, and quote timestamp), entity metadata (name, type, social links, description, tags), per-chain total balances, and a comparison of those totals from 24 hours ago.
Example use cases
Monitor exchange reserves in real time
“Show me all the on-chain token balances for Coinbase right now, broken down by blockchain, with total USD value — I want to track their reserve health.”
Track 24-hour balance change for a protocol
“What were Binance's on-chain holdings 24 hours ago versus right now? I want to see which chains moved the most in USD terms.”
Research institutional crypto treasury
“Pull the full multi-chain on-chain balance breakdown for the MakerDAO entity on Arkham — I need to know every token they hold and its current market value.”
Technical details
Endpoint
POSThttps://api.arkm.com/x402/balances/entity?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need comprehensive, multi-chain on-chain balance data for a named entity (exchange, protocol, institution) tracked by Arkham Intelligence. Prefer this over generic blockchain explorers when you want aggregated USD valuation across chains with a single call, or when you need the Arkham entity graph (name, type, social metadata) alongside the balance data. Best for institutional treasury monitoring, exchange reserve tracking, and on-chain due diligence on known crypto entities.
Side effects
- Unknown or unrecognized entity ID returns an empty or error response
- Payment of $1 USDC not received or rejected causes 402 Payment Required
- Rate limiting or quota exceeded results in 429 Too Many Requests
- Entity exists but has no indexed balances on any chain — returns empty balance arrays
- Network or blockchain data lag may cause stale quote timestamps
- Malformed POST body causes 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cheap | — | If 'true', uses a faster but less real-time balance query (up to 24 hours delayed). |
| chains | — | Chains to filter by, as a single comma-separated value (e.g. 'ethereum,bsc'). If omitted, returns balances across all s… |
| entityrequired | — | The entity ID to query balances for. |
Output
Schema · Response
{}Tags
x402
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