POST
/
evm
eth_getLogs
curl --request POST \
  --url https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/evm \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "method": "eth_getLogs",
  "params": [
    {
      "address": "0x5555555555555555555555555555555555555555",
      "fromBlock": "0x9d0c37",
      "toBlock": "0x9d0c42"
    }
  ],
  "id": 1
}'
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "address": "0x5555555555555555555555555555555555555555",
      "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x000000000000000000000000fc1286eeddf81d6955edad5c8d99b8aa32f3d2aa",
        "0x0000000000000000000000005555555555555555555555555555555555555555"
      ],
      "data": "0x0000000000000000000000000000000000000000000000000de0b6b3a7640000",
      "blockNumber": "0x9d0c37",
      "blockHash": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
      "transactionHash": "0xabcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890",
      "transactionIndex": "0x0",
      "logIndex": "0x0",
      "removed": false
    }
  ]
}
The eth_getLogs JSON-RPC method returns event logs that match specified filter criteria. This method is essential for retrieving smart contract events, monitoring contract activity, and building event-driven applications on the blockchain.
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​
Parameters

The method takes one parameter: a filter object that specifies the criteria for log retrieval.

​
Filter object

  • address (string or array, optional) — Contract address(es) to filter logs from
  • fromBlock (string, optional) — Starting block number in hexadecimal (default: "latest")
  • toBlock (string, optional) — Ending block number in hexadecimal (default: "latest")
  • topics (array, optional) — Array of topic filters for event matching
  • blockhash (string, optional) — Block hash to filter logs from (alternative to block range)

​
Parameter details

Address filtering:
  • Single address: "0x1234..."
  • Multiple addresses: ["0x1234...", "0x5678..."]
  • Omit to get logs from all contracts
Block range:
  • fromBlock and toBlock define the range
  • Use "latest", "earliest", "pending", or hex block numbers
  • Maximum range is 50 blocks on Hyperliquid
Topic filtering:
  • Array of up to 4 topic filters (indexed event parameters) - Hyperliquid limitation
  • Each topic can be null (any value), string (exact match), or array (multiple options)
  • Topics correspond to event signature and indexed parameters

​
Response

The method returns an array of log objects matching the filter criteria.

​
Response structure

Log object:
  • address — Contract address that emitted the log
  • topics — Array of indexed event parameters (including event signature)
  • data — Non-indexed event parameters as hexadecimal string
  • blockNumber — Block number containing the log
  • blockHash — Hash of the block containing the log
  • transactionHash — Hash of the transaction that generated the log
  • transactionIndex — Index of the transaction in the block
  • logIndex — Index of the log in the transaction
  • removed — Boolean indicating if log was removed due to chain reorganization

​
Event decoding

Topic structure:
  • topics[0] — Event signature hash (keccak256 of event signature)
  • topics[1-3] — Indexed event parameters (if any)
  • data — Non-indexed parameters (ABI-encoded)
Event signature: 
// Example: Transfer(address indexed from, address indexed to, uint256 value)
// topics[0] = keccak256("Transfer(address,address,uint256)")
// topics[1] = from address (indexed)
// topics[2] = to address (indexed)  
// data = value (non-indexed)

​
Event filtering

​
Address filtering

Single contract: 
{
  "address": "0x5555555555555555555555555555555555555555",
  "fromBlock": "0x9d0c37",
  "toBlock": "0x9d0c42"
}
Multiple contracts: 
{
  "address": ["0x1111...", "0x2222...", "0x3333..."],
  "fromBlock": "0x9d0c37",
  "toBlock": "0x9d0c42"
}

​
Topic filtering

Specific event: 
{
  "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
}
Event with indexed parameters: 
{
  "topics": [
    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
    "0x000000000000000000000000fc1286eeddf81d6955edad5c8d99b8aa32f3d2aa",
    null
  ]
}
Multiple event options: 
{
  "topics": [
    ["0xevent1hash", "0xevent2hash"],
    null,
    "0xspecificvalue"
  ]
}

​
Hyperliquid-specific limitations

​
Block range constraint

50-block limit:
  • Maximum query range is 50 blocks on Hyperliquid
  • Use chunking for larger ranges
  • Process blocks in batches to respect this limit
  • Plan queries accordingly for historical analysis

​
Topic filtering

4-topic maximum:
  • Up to 4 topic filters are supported
  • Each topic can be null, string, or array of strings
  • Topics[0] is typically the event signature hash
  • Topics[1-3] are indexed event parameters

​
Filter examples

​
Token transfers

All transfers: 
{
  "address": "0x5555555555555555555555555555555555555555",
  "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"],
  "fromBlock": "0x9d0c37",
  "toBlock": "0x9d0c42"
}
Transfers from specific address: 
{
  "topics": [
    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
    "0x000000000000000000000000fc1286eeddf81d6955edad5c8d99b8aa32f3d2aa"
  ]
}

​
Multiple event types

Transfers and approvals: 
{
  "topics": [
    [
      "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
      "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925"
    ]
  ]
}

​
Example request

This an example call with wrapped HYPE (wHYPE) on the Hyperliquid mainnet deployed at 0x5555555555555555555555555555555555555555.
Shell
curl -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"address":"0x5555555555555555555555555555555555555555","fromBlock":"0x9d0c37","toBlock":"0x9d0c42"}],"id":1}' \
  https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/evm

​
Use cases

The eth_getLogs method is essential for applications that need to:
  • Event monitoring: Monitor smart contract events within 50-block ranges
  • DeFi analytics: Track token transfers, swaps, and protocol events
  • Transaction analysis: Analyze contract interactions and state changes
  • Audit systems: Track contract activity for compliance and security
  • Portfolio tracking: Monitor user transactions and balance changes
  • Market analysis: Analyze trading activity and market events
  • Notification systems: Generate alerts based on specific events
  • Data indexing: Build event databases with chunked processing
  • Development tools: Debug and test smart contract event emissions
  • Integration services: Provide event data to external systems
On Hyperliquid, eth_getLogs supports up to 4 topics and a maximum query range of 50 blocks. For larger ranges, use chunking to process blocks in batches of 50 or fewer.

Body

application/json

Response

200 - application/json

Successful response with matching event logs

The response is of type object.