# kaia\_getFilterChanges

#### **Parameters**

| Name     | Type   | Description                                             |
| -------- | ------ | ------------------------------------------------------- |
| QUANTITY | string | <p>The filter id (<em>e.g.</em>, "0x16" // 22).<br></p> |

#### **Return Value**

`Array` - Array of log objects, or an empty array if nothing has changed since last poll.

| Name             | Type          | Description                                                                                                                                                                                                                                  |
| ---------------- | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| removed          | TAG           | `true` when the log was removed, due to a chain reorganization. `false` if it is a valid log.                                                                                                                                                |
| logIndex         | QUANTITY      | Integer of the log index position in the block. `null` when it is a pending log.                                                                                                                                                             |
| transactionIndex | QUANTITY      | Integer of the transactions index position log was created from. `null` when pending.                                                                                                                                                        |
| transactionHash  | 32-byte DATA  | Hash of the transactions this log was created from. `null` when pending.                                                                                                                                                                     |
| blockHash        | 32-byte DATA  | Hash of the block where this log was in. `null` when pending.                                                                                                                                                                                |
| blockNumber      | QUANTITY      | The block number where this log was in. `null` when pending.Address from which this log originated.                                                                                                                                          |
| address          | 20-byte DATA  | Address from which this log originated.                                                                                                                                                                                                      |
| data             | DATA          | Contains the non-indexed arguments of the log.                                                                                                                                                                                               |
| topics           | Array of DATA | Array of 0 to 4 32-byte DATA 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.). |

#### Example

{% code overflow="wrap" %}

```json
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"kaia_getFilterChanges","params":["0x16"],"id":73}' http://kaia.blockpi.network/v1/rpc/your-api-key

// Result
{
    "id":1,
    "jsonrpc":"2.0",
    "result": [{
    "logIndex": "0x1", // 1
    "blockNumber":"0x1b4", // 436
    "blockHash": "0x8216c5785ac562ff41e2dcfdf5785ac562ff41e2dcfdf829c5a142f1fccd7d",
    "transactionHash":  "0xdf829c5a142f1fccd7d8216c5785ac562ff41e2dcfdf5785ac562ff41e2dcf",
    "transactionIndex": "0x0", // 0
    "address": "0x16c5785ac562ff41e2dcfdf829c5a142f1fccd7d",
    "data":"0x0000000000000000000000000000000000000000000000000000000000000000",
    "topics": ["0x59ebeb90bc63057b6515673c3ecf9438e5058bca0f92585014eced636878c9a5"]
    },{
        ...
    }]
}
```

{% endcode %}


---

# 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://docs.blockpi.io/build/api-reference/kaia/klay_getfilterchanges.md?ask=<question>
```

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.