# Base Address Intelligence (Unified Profile)

> Base Address Intelligence (Unified Profile) is a paid API for AI agents from 89-116-220-218.sslip.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).

Returns a unified profile for a Base address including USDC balance, ETH balance, primary Basename, transaction count (nonce), and contract detection in a single call.

## Facts

- Endpoint: GET https://89-116-220-218.sslip.io/base/address-intel?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-address-intelligence-unified-profile-9ab0ce3b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IstZYdE87MvX5aYKnB1b7

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 base-address-intelligence-unified-profile-9ab0ce3b
```

Example prompt: Can you give me a full profile of the Base wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — I need the ETH and USDC balances, whether it's a contract, its Basename if it has one, and how many transactions it's done?

## When to prefer this

Use this endpoint when you need multiple data points about a Base address (balances, Basename, nonce, contract status) in a single request, rather than making four or five separate RPC calls or API lookups. It is ideal for pre-interaction due diligence on counterparty or payout wallets on Base mainnet, and saves latency and cost compared to chaining individual endpoints.

## Known failure modes

- Invalid address format (not 0x + 40 hex chars) returns a validation error
- Address with no on-chain activity returns zero balances and null Basename
- RPC node unavailability may cause timeout or 5xx error
- Payment failure or insufficient USDC for the $0.01 fee blocks the request via x402 flow

## How this service works

One call for an address on Base: USDC balance, ETH balance, verified primary Basename, transaction count (nonce) and whether it is a contract. Use it to profile a counterparty or payout wallet before interacting. Replaces four or five separate reads with a single priced request. Query: ?address=0x...

## Output

A single JSON response containing: USDC balance (as a formatted amount), ETH balance, the verified primary Basename (if set), total transaction count (nonce), and a boolean flag indicating whether the address is a smart contract or an externally owned account (EOA).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "Base address to profile (0x + 40 hex chars)"
      }
     }
    }
   },
   "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/base-address-intelligence-unified-profile-9ab0ce3b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 89-116-220-218.sslip.io](https://www.zero.xyz/host/89-116-220-218.sslip.io/llms.txt)