# venue-watch: Base Address Lookup

> venue-watch: Base Address Lookup is a paid API for AI agents from venue-watch.fantastic-snowstorm.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).

Returns ETH balance, nonce, token balances, and contract status for a Base blockchain address

## Facts

- Endpoint: GET https://venue-watch.fantastic-snowstorm.workers.dev/v1/base/address?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/venue-watch-base-address-lookup-ef9fd478
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AXQtDOTA4zjEo2d7j-J5_

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 venue-watch-base-address-lookup-ef9fd478
```

Example prompt: Can you pull up the on-chain wallet info for Base address 0xAbC123... — I need to see the ETH balance, USDC token balance, nonce, and whether it's a contract or a regular wallet.

## When to prefer this

Use this endpoint when you need a quick, deterministic, LLM-free lookup of on-chain state for a Base blockchain address — specifically ETH balance, token balances, nonce, and contract status. Prefer it over generic block explorers when you need a structured JSON response suitable for agent pipelines. It charges only on successful responses (bad input is not billed), making it safe for validation workflows.

## Known failure modes

- Invalid or malformed address returns 4xx with no charge
- Address not found on Base returns empty balances or error
- Upstream Base RPC unavailable causes 5xx or timeout
- Missing address parameter returns 4xx validation error
- Non-Base (wrong chain) address lookup may return zero balances without error

## How this service works

Which venues actually pay AI agents right now. Live open-task counts pulled from public venue APIs (Taskmarket, TaskBounty), plus curated, dated, sourced verdicts on other venues (Virtuals ACP, x402 Bazaar, Superteam Earn, Algora, AgentPact, bug-bounty platforms). All tools are deterministic and LLM-free. Bad input returns 4xx and is not settled (no charge). Upstream sources are named in each response.

## Output

A JSON object containing the queried address, its ETH balance (as a decimal string), the current nonce, a list of tokens with symbol and balance, and a boolean indicating whether the address is a smart contract.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "eth": "0.012",
  "nonce": 5,
  "tokens": [
   {
    "symbol": "USDC",
    "balance": "12.5"
   }
  ],
  "address": "0x...",
  "isContract": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/venue-watch-base-address-lookup-ef9fd478/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from venue-watch.fantastic-snowstorm.workers.dev](https://www.zero.xyz/host/venue-watch.fantastic-snowstorm.workers.dev/llms.txt)