{"uid":"cap_tWMZUvZOM_AqwzXgj7nGc","slug":"blockscout-multichain-transaction-search-ecdfb5c1","name":"Blockscout Multichain Transaction Search","description":"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","url":"https://api.blockscout.com/services/multichain/api/v1/clusters/%7Bcluster_id%7D/search/transactions","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","properties":{"cluster_id":{"type":"string"}}},"queryParams":{"type":"object","properties":{"q":{"type":"string"},"chain_id":{"type":"array"},"page_size":{"type":"integer"},"page_token":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"items":[{"hash":"string","chain_id":"string","hash_type":"string"}],"next_page_params":{"page_size":0,"page_token":"string"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.012","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.012/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.012","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.012","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_i_Cli-JU5FoOAQFpE4ij4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.012","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Search for transactions by hash or query across multiple blockchain networks within a Blockscout cluster","exampleAgentPrompt":"Can you search Blockscout's multichain explorer for the transaction hash 0xabc123... across Ethereum and Polygon in cluster mainnet-evm — show me the first 10 results?","exampleUseCases":[{"title":"Cross-chain transaction hash lookup","prompt":"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?"},{"title":"Audit trail across EVM networks","prompt":"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."},{"title":"Paginate through multichain search results","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-11T18:57:22.675Z","isFirstParty":false}