# getLogs
#### REQUEST
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```
POST https://mainet.rpc.ctexscan.com
```
**HEADERS**
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```
Content-Type: application/json
```
**REQUEST PARAMS**
* `FILTER OBJECT`
* `address` *\[optional]* - a string representing the address (20 bytes) to check for balance
* `fromBlock` *\[optional, default is "latest"]* - an integer block number, or the string "latest", "earliest" or "pending"
* `toBlock` *\[optional, default is "latest"]* - an integer block number, or the string "latest", "earliest" or "pending"
* `topics`*\[optional]* - Array of 32 Bytes DATA topics. Topics are order-dependent.
* `blockhash`:*\[optional]* With the addition of EIP-234, `blockHash` restricts the logs returned to the single block with the 32-byte hash `blockHash`. Using `blockHash` is equivalent to `fromBlock` = `toBlock` = the block number with hash `blockHash`. If `blockHash` is present in in the filter criteria, then neither `fromBlock` nor `toBlock` are allowed.
**EXAMPLE**
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```
Explain## JSON-RPC over HTTPS POST
curl https://mainet.rpc.ctexscan.com
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"blockHash": "0x7c5a35e9cb3e8ae0e221ab470abae9d446c3a5626ce6689fc777dcffcab52c70", "topics":["0x241ea03ca20251805084d27d4440371c34a0b85ff108f6bb5611248f73818b80"]}],"id":1}'
## JSON-RPC over WSS
wscat -c ws://mainet.rpc.ctexscan.com
>{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"blockHash": "0x7c5a35e9cb3e8ae0e221ab470abae9d446c3a5626ce6689fc777dcffcab52c70", "topics":["0x241ea03ca20251805084d27d4440371c34a0b85ff108f6bb5611248f73818b80"]}],"id":1}
```
#### RESPONSE
**RESULT FIELDS**
* `LOG OBJECTS` - An array of log objects, or an empty array if nothing has changed since last poll.
* logs are objects with following params:
* `removed`: true when the log was removed, due to a chain reorganization. false if it's a valid log.
* `logIndex`: integer of the log index position in the block. null when its pending log.
* `transactionIndex`: integer of the transactions index position log was created from. null when its pending log.
* `transactionHash`: 32 Bytes - hash of the transactions this log was created from. null when its pending log.
* `blockHash`: 32 Bytes - hash of the block where this log was in. null when its pending. null when its pending log.
* `blockNumber`: the block number where this log was in. null when its pending. null when its pending log.
* `address`: 20 Bytes - address from which this log originated.
* `data`: contains one or more 32 Bytes non-indexed arguments of the log.
* `topics`: Array of 0 to 4 32 Bytes of indexed log arguments. (In solidity: The first topic is the hash of the signature of the event (e.g. Deposit(address,bytes32,uint256)), except you declared the event with the anonymous specifier.)
**BODY**
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```
Explain{
"jsonrpc": "2.0",
"id": 1,
"result": [
{
"address": "0x1a94fce7ef36bc90959e206ba569a12afbc91ca1",
"blockHash": "0x7c5a35e9cb3e8ae0e221ab470abae9d446c3a5626ce6689fc777dcffcab52c70",
"blockNumber": "0x5c29fb",
"data": "0x0000000000000000000000003e3310720058c51f0de456e273c626cdd35065700000000000000000000000000000000000000000000000000000000000003185000000000000000000000000000000000000000000000000000000000000318200000000000000000000000000000000000000000000000000000000005c2a23",
"logIndex": "0x1d",
"removed": false,
"topics": [
"0x241ea03ca20251805084d27d4440371c34a0b85ff108f6bb5611248f73818b80"
],
"transactionHash": "0x3dc91b98249fa9f2c5c37486a2427a3a7825be240c1c84961dfb3063d9c04d50",
"transactionIndex": "0x1d"
},
{
"address": "0x06012c8cf97bead5deae237070f9587f8e7a266d",
"blockHash": "0x7c5a35e9cb3e8ae0e221ab470abae9d446c3a5626ce6689fc777dcffcab52c70",
"blockNumber": "0x5c29fb",
"data": "0x00000000000000000000000077ea137625739598666ded665953d26b3d8e374400000000000000000000000000000000000000000000000000000000000749ff00000000000000000000000000000000000000000000000000000000000a749d00000000000000000000000000000000000000000000000000000000005c2a0f",
"logIndex": "0x57",
"removed": false,
"topics": [
"0x241ea03ca20251805084d27d4440371c34a0b85ff108f6bb5611248f73818b80"
],
"transactionHash": "0x788b1442414cb9c9a36dba2abe250763161a6f6395788a2e808f1b34e92beec1",
"transactionIndex": "0x54"
}
]
}
```
**LIMITATIONS**
To prevent queries from consuming too many resources, `eth_getLogs` requests are currently limited by two constraints:
* A max of 10,000 results can be returned by a single query
* Query duration must not exceed 10 seconds
If a query returns too many results or exceeds the max query duration, one of the following errors is returned:
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```
Explain{
"jsonrpc": "2.0",
"id": 1,
"error": {
"code": -32005,
"message": "query returned more than 10000 results"
}
}
```
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```
Explain{
"jsonrpc": "2.0",
"id": 1,
"error": {
"code": -32005,
"message": "query timeout exceeded"
}
}
```
If this happens:
* Limit your query to a smaller number of blocks using `fromBlock` and `toBlock`.
* If querying for commonly used `topics`, consider limiting to a single Smart Contract `address` as well.
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://ctex-network.gitbook.io/developer-documentation/apis/getlogs.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.