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TraceFast Block EIP-7702 Authorizations
x402
TraceFast Block EIP-7702 Authorizations is a paid API for AI agents from mpp.tracefast.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Returns every EIP-7702 authorization-list entry carried by transactions in a specific Ethereum block, including delegation target, chain ID, nonce, and signature, in transaction and list order.
Price / call$0.01
Success—
StatusUnknown
How this service works
TraceFast live Ethereum data: every EIP-7702 authorization-list entry carried by the transactions of one block — the delegation target, the chain id and nonce it was signed for, and the signature — in transaction order and then list order. Path number: Block height. Query limit: 1..=100, default 25; cursor: `nextCursor` of the previous page. Docs: https://docs.tracefast.xyz/api/block-authorizations.md
Output
A paginated list of EIP-7702 authorization-list entries for the specified Ethereum block, each containing the delegation target address, the chain ID and nonce the authorization was signed for, and the cryptographic signature — ordered first by transaction position within the block, then by position within each transaction's authorization list. Includes a nextCursor field for pagination when more entries exist.
Example use cases
Audit EIP-7702 delegations in a block
“Show me every EIP-7702 authorization in Ethereum block 21200000 — I need the delegation target address, chain ID, nonce, and signature for each entry, in the order they appeared in transactions.”
Monitor smart account adoption per block
“I want to track how many EIP-7702 authorization-list entries appeared in block 20800000 on Ethereum mainnet and who the delegation targets were — can you pull the first 100?”
Paginate through large block authorization lists
“Get the next page of EIP-7702 authorizations from Ethereum block 21350000 — use the cursor from the previous response and return up to 25 entries.”
Technical details
Endpoint
GEThttps://mpp.tracefast.xyz/api/v1/chains/1/blocks/:number/authorizations?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need EIP-7702 authorization-list data (delegation targets, chain IDs, nonces, signatures) at the block level in transaction order. Prefer this over generic transaction endpoints when your focus is account abstraction, smart account delegation auditing, or EIP-7702 adoption analytics. It is the only endpoint that surfaces the authorization-list sub-structure of EIP-7702 transactions organized by block.
Side effects
- Block number not yet mined or does not exist — returns 404 or empty result
- Block has no EIP-7702 transactions — returns empty list
- Invalid or expired pagination cursor — returns 400 or cursor error
- Limit out of range (must be 1–100) — returns 400 validation error
- Rate limit exceeded — returns 429
- Payment not provided or invalid x402 payment — returns 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Tags
x402
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