# Free Asset Radar x402 – Base Address Profile

> Free Asset Radar x402 – Base Address Profile is a paid API for AI agents from free-asset-radar-x402.besenok2018.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Returns an on-chain profile for a Base network address, including ETH balance, nonce, and whether it is a contract.

## Facts

- Endpoint: GET https://free-asset-radar-x402.besenok2018.workers.dev/api/x402/base-address-profile?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-asset-radar-x402-base-address-profile-15236915
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cjdXAna-hnEDKuIGBKAh1

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 free-asset-radar-x402-base-address-profile-15236915
```

Example prompt: Can you pull the on-chain profile for the Base address 0xAbC123...def456? I want to know its ETH balance, nonce, and whether it's a smart contract.

## When to prefer this

Choose this endpoint when you need a quick, lightweight on-chain profile of a Base network address without setting up your own RPC node. It is ideal for agents that need to verify wallet vs. contract status, check ETH balance, or inspect nonce before executing a transaction or payment on Base (eip155:8453). Prefer it over full blockchain explorers when you only need these core fields and want a simple JSON response via a pay-per-call x402 model.

## Known failure modes

- Invalid or malformed address returns an error response
- Address not found or zero-activity address may return zero balances and nonce
- Network connectivity issues to Base RPC may cause timeouts
- Missing required address parameter results in a bad request error
- Rate limiting or payment failure may block the x402-gated request

## How this service works

Stable edge-hosted x402 utilities for autonomous agents.

## Output

Returns a JSON object containing: the canonical address (0x...), current ETH balance as a decimal string, the nonce (transaction count), the network identifier ('eip155:8453' for Base mainnet), and a boolean isContract indicating whether the address is a smart contract.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "eth": "0.01",
  "nonce": 12,
  "address": "0x...",
  "network": "eip155:8453",
  "isContract": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/free-asset-radar-x402-base-address-profile-15236915/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from free-asset-radar-x402.besenok2018.workers.dev](https://www.zero.xyz/host/free-asset-radar-x402.besenok2018.workers.dev/llms.txt)