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DeFi Shield L2 Finality Data
x402
DeFi Shield L2 Finality Data is a paid API for AI agents from defi-shield-hazel.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).
Returns detailed Layer 2 finality information for a given chain, including rollup type, sequencer, challenge period, block time, soft/hard finality, and data availability method.
Price / call$0.1
Success—
StatusUnknown
Output
Returns a JSON object with the chain name, chain ID, rollup type (e.g. Optimistic Rollup / OP Stack), sequencer identity, soft finality duration (sequencer confirmation), hard finality duration (challenge period), block time, data availability mechanism, liveness status, latest block, and response timestamp.
Example use cases
Example prompt
“Can you pull the L2 finality details for Base — I want to know the rollup type, who the sequencer is, the challenge period, and how long both soft and hard finality take?”
Technical details
Endpoint
POSThttps://defi-shield-hazel.vercel.app/api/chain/l2-finalityWhen to prefer
Use this endpoint when you need structured, canonical L2 finality metadata for a specific chain — especially rollup type, challenge period, and sequencer details — rather than raw on-chain data. Ideal for DeFi risk assessment, cross-chain bridging decisions, or explaining Layer 2 security assumptions to users.
Side effects
- Unsupported or unrecognized chain name returns an error or empty result
- Network timeout if upstream chain data is unavailable
- Null values for liveness or latest_block if real-time data is unavailable
- Malformed request body returns 4xx error
Input
{
"chain": "base"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"chain": "Base",
"is_l2": true,
"is_live": null,
"chain_id": 8453,
"sequencer": "Coinbase (centralized sequencer)",
"timestamp": "2026-06-16T01:17:47.368Z",
"block_time": "~2s",
"rollup_type": "Optimistic Rollup (OP Stack)",
"latest_block": null,
"hard_finality": "7 days (challenge period)",
"soft_finality": "~2s (sequencer confirmation)",
"challenge_period": "7 days",
"response_time_ms": 103,
"data_availability": "Ethereum L1 (blobs via EIP-4844)"
}Tags
x402
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