# Address Intelligence

> Address Intelligence is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).

Checks an Ethereum/Base address for EOA vs contract classification, ETH and USDC balances, transaction count, and activity level via Base RPC.

## Facts

- Endpoint: GET https://402.com.tr/api/x402/address-intel?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/address-intelligence-f90537a2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SN-aV85fjdYd4WaxjRo2w

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 address-intelligence-f90537a2
```

Example prompt: Can you check the address 0x1234...abcd on Base — tell me if it's a contract or a regular wallet, and what its ETH and USDC balances and transaction count look like?

## When to prefer this

Use this endpoint when you need a fast, cheap ($0.02) snapshot of a Base wallet or contract — especially for counterparty due diligence, pre-payment checks, or activity screening. Prefer it over heavier due-diligence endpoints when you only need basic identity (EOA vs contract), balance, and activity signals rather than full audit trails or approval graphs.

## Known failure modes

- Invalid or malformed address returns an error response
- Address not found or zero-activity address may return zero balances and counts
- RPC rate limits or network congestion may cause timeouts
- Non-Base addresses (e.g. mainnet-only contracts) may return unexpected or empty results

## How this service works

EOA vs contract, ETH + USDC balance, transaction count and activity level — straight from Base RPC. Useful for counterparty and wallet checks.

## Output

Returns whether the address is an EOA or smart contract, current ETH balance, current USDC balance, total transaction count, and an activity level indicator — all sourced live from Base RPC.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "Address"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/address-intelligence-f90537a2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 402.com.tr](https://www.zero.xyz/host/402.com.tr/llms.txt)