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Blockchain.com Explorer API – ETH Block Transactions
x402
Blockchain.com Explorer API – ETH Block Transactions is a paid API for AI agents from api.blockchain.info, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).
Retrieves a paginated, sorted list of transactions within a specific Ethereum block, identified by block hash or block number
Price / call$0.003
Success—
StatusUnknown
How this service works
Paid AI-agent access to Blockchain.com Explorer API
Output
Returns a paginated list of Ethereum transactions within the specified block, including each transaction's index, value in Wei, and fee. Also includes total transaction count so the caller knows how to page through the full set. An offset beyond the total returns an empty list rather than an error.
Example use cases
Audit high-fee transactions in a block
“Show me the top 50 transactions from Ethereum block 19800000 sorted by fees descending — I want to see which transactions paid the most gas in that block.”
Investigate specific block by hash
“Get me all transactions from the Ethereum block with hash 0xabcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890ab, sorted by value, first 15.”
Page through large block transaction history
“I need to go through all transactions in ETH block 18000000 in batches — start with offset 50, give me 50 transactions sorted by index ascending.”
Technical details
Endpoint
POSThttps://api.blockchain.info/explorer-gateway-kt/x402/eth/block/transactions?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured, paginated access to all transactions within a specific Ethereum block, especially when you need to sort by value, fee, or index, or when building analytics pipelines that process blocks transaction-by-transaction. Prefer this over general blockchain RPCs when you want a clean REST interface with sorting and pagination built in, backed by Blockchain.com's indexed explorer data.
Side effects
- Neither hash nor blockId provided — request will fail or return error
- Both hash and blockId provided simultaneously — ambiguous input
- Block not found — non-existent block number or invalid hash returns empty or error
- Offset beyond total transactions — returns empty page (not an error)
- Limit exceeds maximum of 50 — capped or rejected
- Invalid sort/order enum value — API returns validation error
- Network parameter mismatch — requesting a non-ETH network on an ETH-specific endpoint
- Payment not processed — x402 payment failure blocks access
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hash | — | Block hash; provide this or blockId |
| sort | string | `index` orders by `transactionIndex`, `value` by `value` (Wei), `fees` by `fee`. Ties always fall back to transaction index, so paging can neither duplicate nor skip a transaction. |
| limit | integer | Page size (capped at 50) |
| order | string | |
| offset | integer | Offset into the sorted transaction list. An offset beyond `total` returns an empty page, not an error. |
| blockId | — | Block number (non-negative); provide this or hash |
| network | string |
Output
Schema · Response
{
"type": "json",
"format": "application/json"
}Tags
x402
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