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Blockchain.com Explorer – Block Transactions
x402
Blockchain.com Explorer – 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, sortable list of transactions within a specific Bitcoin block identified by hash or height
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 transactions from the specified Bitcoin block, ordered by the chosen sort field (index, value, or fees). Each page contains up to 50 transaction entries with details sufficient for block exploration and analysis. An offset beyond the total transaction count returns an empty page rather than an error.
Example use cases
Audit high-fee transactions in a block
“Pull the top 50 transactions sorted by fee from Bitcoin block 840000 — I want to see which ones paid the most to miners.”
Inspect genesis block contents
“List all transactions in the Bitcoin genesis block (hash 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f), sorted by index.”
Page through large block transactions
“Get me transactions 51 through 100 from Bitcoin block height 800000, sorted by output value descending.”
Technical details
Endpoint
POSThttps://api.blockchain.info/explorer-gateway-kt/x402/btc/block/transactions?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need transaction-level detail for a specific Bitcoin block, especially with sorting and pagination control. Prefer this over full-block endpoints when you only need a subset of transactions or want to sort by fee/value. Ideal for block explorers, chain analytics, and auditing tools that need to page through large blocks efficiently.
Side effects
- Both hash and height provided simultaneously — API likely rejects or ignores one
- Invalid block hash (not 64 hex characters) — returns error
- Block height not found (future or invalid block) — returns empty or error
- Offset beyond total transactions — returns empty page (not an error)
- Limit exceeding 50 — capped or rejected
- Payment failure (x402 protocol) — access denied without USDC payment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hash | string | Block hash — exactly 64 hex characters. Provide either hash or height, not both. |
| sort | string | `index` orders by position in the block, `value` by summed output value, `fees` by fee. Ties always fall back to block position, so paging can neither duplicate nor skip a transaction. |
| limit | integer | Page size (capped at 50) |
| order | string | |
| height | integer | Block height (non-negative integer). Provide either hash or height, not both. |
| offset | integer | Offset into the sorted transaction list. An offset beyond `total` returns an empty page, not an error. |
Output
Schema · Response
{
"type": "json",
"format": "application/json"
}Tags
x402
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