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Crypto Shark Bazaar – Finalized Block
x402
Crypto Shark Bazaar – Finalized Block is a paid API for AI agents from cryptoshark.duckdns.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Returns the latest finalized block information for a blockchain network, including the network name and the timestamp at which it was observed.
Price / call$0.001
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 blockchain network identifier (e.g. 'base') and the ISO 8601 timestamp at which the finalized block was observed (e.g. '2026-09-16T00:00:00.000Z'), confirming the most recently finalized block on the network.
Example use cases
Monitor Base network block finality
“Check the Base network's latest finalized block and tell me when it was last observed — I want to make sure the chain is producing blocks normally.”
Verify on-chain liveness before transaction
“Before I submit this on-chain transaction, can you confirm the Base network has a recent finalized block and tell me its observation timestamp?”
Agent health check for blockchain state
“My autonomous agent needs to verify the blockchain is live — can you fetch the latest finalized block on Base and return the network name and observed time?”
Technical details
Endpoint
GEThttps://cryptoshark.duckdns.org/chain/finalized-block?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a lightweight, low-cost ($0.001 USDC) confirmation that a specific blockchain network (e.g. Base) is actively finalizing blocks, or when you need a canonical on-chain timestamp for synchronization, liveness checks, or pre-transaction validation — without needing full block data or transaction details.
Side effects
- Network or node outage may return a stale or missing observedAt timestamp
- Unsupported network identifiers may result in an empty or error response
- Rate limiting or payment failure (x402) may prevent access
- Malformed properties parameter may cause a 400 or unexpected empty response
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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