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Crypto Shark Bazaar – Native Balance Lookup
x402
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)
Price / call$0.003
Success—
StatusUnknown
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.
Example use cases
Agent wallet funding check
“Before I run the next batch of transactions, check whether my agent wallet 0xAbC123... on Base has enough native ETH to cover gas fees.”
User portfolio native balance
“What's the native token balance of my wallet 0xDef456... on Base right now?”
Automated low-balance alert
“Check the native balance on address 0x789Ghi... on Base and let me know if it's fallen below 0.01 ETH.”
Technical details
Endpoint
GEThttps://cryptoshark.duckdns.org/chain/native-balance?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "base",
"observedAt": "2026-09-16T00:00:00.000Z"
}
}Tags
x402
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