# Arkham Intelligence Address Lookup

> Arkham Intelligence Address Lookup is a paid API for AI agents from api.arkm.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-09-13).

Returns on-chain identity intelligence for a blockchain wallet address, including entity attribution, labels, and contract status.

## Facts

- Endpoint: POST https://api.arkm.com/x402/intelligence/address
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arkham-intelligence-address-lookup-c2806f85
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PqaSmtTuhIoCeR75Pv7pr

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-address-lookup-c2806f85 -d '<json body>'
```

Example prompt: Who owns the Ethereum wallet 0x28C6c06298d514Db089934071355E5743bf21d60? I want to know the entity name, type, and any labels Arkham has for it.

## When to prefer this

Use this endpoint when you need authoritative on-chain entity attribution — specifically Arkham's proprietary labeling of wallets to known entities (exchanges, protocols, funds, individuals). It is ideal for compliance checks, due diligence on counterparties, or enriching transaction data with real-world identity context. Prefer it over generic blockchain explorers when you need structured entity metadata (type, social links, exchange affiliation) rather than raw transaction history.

## Known failure modes

- Address not found in Arkham database — entity fields may be null or absent
- Invalid address format — malformed hex address returns an error
- Unsupported chain — chain identifiers not indexed by Arkham return no data
- Insufficient USDC balance for x402 pay-per-request — payment failure blocks the call
- Rate limiting if too many requests are issued in quick succession

## How this service works

Get Arkham intelligence for an address. $0.20 per call.

## Output

A JSON object containing the chain, address, a boolean indicating whether it is a contract, an Arkham label (name and chain type), an Arkham entity object (id, name, type, social profiles including Twitter, website, LinkedIn, Crunchbase), and a flag indicating whether it is a user address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "Blockchain network to query. Only one network is used: if multiple values are provided, only the first applies. If omit…"
  },
  "address": {
   "anyOf": [
    {
     "type": "string"
    },
    {
     "type": "number"
    },
    {
     "type": "boolean"
    },
    {
     "type": "array",
     "items": {
      "anyOf": [
       {
        "type": "string"
       },
       {
        "type": "number"
       },
       {
        "type": "boolean"
       }
      ]
     }
    }
   ],
   "description": "The blockchain address to query."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "ethereum",
  "address": "0x28C6c06298d514Db089934071355E5743bf21d60",
  "contract": false,
  "arkhamLabel": {
   "name": "Hot Wallet",
   "address": "0x28C6c06298d514Db089934071355E5743bf21d60",
   "chainType": "evm"
  },
  "arkhamEntity": {
   "id": "binance",
   "name": "Binance",
   "note": "",
   "type": "cex",
   "service": null,
   "twitter": "https://twitter.com/binance",
   "website": "https://binance.com",
   "linkedin": "https://www.linkedin.com/company/binance",
   "crunchbase": "https://www.crunchbase.com/organization/binance"
  },
  "isUserAddress": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arkham-intelligence-address-lookup-c2806f85/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)