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Blockscout Multichain Transaction Search
x402
Blockscout Multichain Transaction Search is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-11).
Search for transactions by hash or query across multiple blockchain networks within a Blockscout cluster
Price / call$0.012
Success—
StatusUnknown
How this service works
Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data
Output
Returns a paginated list of transaction items, each containing a transaction hash, the chain ID it belongs to, and the hash type. Also includes next_page_params with a page_token and page_size for fetching subsequent pages.
Example use cases
Cross-chain transaction hash lookup
“I have this transaction hash 0xd3f9a1b2c4e... and I'm not sure which chain it's on — can you search for it across all chains in the Blockscout mainnet cluster and tell me where it appears?”
Audit trail across EVM networks
“Search Blockscout's multichain explorer in cluster mainnet-evm for all transactions related to the query '0xWalletAddress' on chain IDs 1 and 137, and give me up to 20 results so I can audit activity across Ethereum and Polygon.”
Paginate through multichain search results
“I was searching multichain transactions on Blockscout cluster mainnet-evm for the query 'tokenTransfer' and got a page token back — can you fetch the next page of 10 results using that token?”
Technical details
Endpoint
GEThttps://api.blockscout.com/services/multichain/api/v1/clusters/%7Bcluster_id%7D/search/transactionsWhen to prefer
Use this endpoint when you need to search for transactions specifically across multiple blockchain networks simultaneously within a Blockscout cluster. Prefer this over single-chain explorers when the chain of a transaction is unknown, or when you need cross-chain transaction visibility in one call. Best suited for multichain auditing, cross-chain dapp monitoring, or when a user provides a tx hash without specifying the network.
Side effects
- Invalid or non-existent cluster_id returns an error or empty results
- Malformed query string returns no matches
- Invalid chain_id filter causes empty results or bad request
- Missing required cluster_id path parameter results in 404 or routing error
- Expired or invalid page_token causes pagination failure
- Rate limiting or payment failure returns 402 or 429 status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"items": [
{
"hash": "string",
"chain_id": "string",
"hash_type": "string"
}
],
"next_page_params": {
"page_size": 0,
"page_token": "string"
}
}
}Tags
x402
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