# Crypto Shark Bazaar – Native Balance Lookup

> Crypto Shark Bazaar – Native Balance Lookup is a paid API for AI agents from cryptoshark.duckdns.org, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).

Retrieves the native token balance for a blockchain address on a supported network (e.g. Base)

## Facts

- Endpoint: GET https://cryptoshark.duckdns.org/chain/native-balance?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-shark-bazaar-native-balance-lookup-279ea596
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M2tIdMP5I2F9hcfCsvosF

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 crypto-shark-bazaar-native-balance-lookup-279ea596
```

Example prompt: Can you check the current native token balance of wallet address 0xAbC123... on the Base network?

## When to prefer this

Choose this endpoint when you need a quick, low-cost ($0.003 USDC) on-chain native balance lookup — especially for Base network — within an autonomous agent workflow that already uses x402 micropayment infrastructure. Prefer it over heavier blockchain indexers when you only need a single address's native balance and want minimal overhead.

## Known failure modes

- Invalid or malformed wallet address returns an error response
- Unsupported network identifier returns a validation error
- Address with no on-chain activity may return a zero balance
- Rate limiting or payment failure returns 402 or 429 status
- Network RPC downtime may cause delayed or failed responses

## How this service works

Low-cost x402 blockchain primitives, market intelligence, and AI utilities for autonomous agents

## Output

A JSON object containing the network name (e.g. 'base'), the observed native token balance for the queried address, and a timestamp (observedAt) indicating when the balance snapshot was taken.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "network": "base",
  "observedAt": "2026-09-16T00:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-shark-bazaar-native-balance-lookup-279ea596/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cryptoshark.duckdns.org](https://www.zero.xyz/host/cryptoshark.duckdns.org/llms.txt)