> For the complete documentation index, see [llms.txt](https://docs.getblock.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getblock.io/api-reference/solana-sol/getinflationgovernor-solana.md).

# getInflationGovernor - Solana

Example code for the getInflationGovernor JSON-RPC method. Complete guide on how to use getInflationGovernor JSON-RPC in GetBlock Web3 documentation.

This method returns the inflation parameters governing SOL issuance, including the initial and terminal rates and the annual taper. These values are set by cluster genesis configuration.

## Parameters

| Parameter | Type   | Required | Description                                 |
| --------- | ------ | -------- | ------------------------------------------- |
| config    | object | No       | Configuration object controlling commitment |

### Config Object

| Field      | Type   | Required | Description                                                                 |
| ---------- | ------ | -------- | --------------------------------------------------------------------------- |
| commitment | string | No       | Commitment level: processed, confirmed, or finalized. Defaults to finalized |

## Request

{% tabs %}
{% tab title="cURL" %}
{% code overflow="wrap" %}

```bash
curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "getInflationGovernor",
    "params": [{"commitment": "finalized"}],
    "id": "getblock.io"
}'
```

{% endcode %}
{% endtab %}

{% tab title="@solana/web3.js" %}
{% code title="example.js" %}

```javascript
const { Connection } = require('@solana/web3.js');

const connection = new Connection('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/', 'finalized');

const governor = await connection.getInflationGovernor();

console.log(governor);
```

{% endcode %}
{% endtab %}

{% tab title="Request" %}
{% code title="example.py" %}

```python
import requests

response = requests.post(
    'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'getInflationGovernor',
        'params': [{"commitment": "finalized"}],
        'id': 'getblock.io'
    }
)

print(response.json()['result'])
```

{% endcode %}
{% endtab %}

{% tab title="Rust" %}
{% code title="example.rs" %}

```rust
use reqwest::Client;
use serde_json::{json, Value};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&json!({
            "jsonrpc": "2.0",
            "method": "getInflationGovernor",
            "params": [{"commitment": "finalized"}],
            "id": "getblock.io"
        }))
        .send()
        .await?
        .json::<Value>()
        .await?;

    println!("Result: {}", response["result"]);
    Ok(())
}
```

{% endcode %}
{% endtab %}
{% endtabs %}

## Response

```json
{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "foundation": 0.0,
        "foundationTerm": 0.0,
        "initial": 0.08,
        "taper": 0.15,
        "terminal": 0.015
    }
}
```

## Response Parameters

| Parameter | Type   | Description                                                |
| --------- | ------ | ---------------------------------------------------------- |
| jsonrpc   | string | JSON-RPC protocol version ("2.0")                          |
| id        | string | Request identifier matching the request                    |
| result    | object | Object holding the cluster's inflation governor parameters |

### Result Object

| Field          | Type   | Description                                              |
| -------------- | ------ | -------------------------------------------------------- |
| initial        | number | Initial annual inflation rate at genesis                 |
| terminal       | number | Long-run annual inflation rate the schedule converges to |
| taper          | number | Annual rate at which inflation decreases toward terminal |
| foundation     | number | Share of total inflation allocated to the foundation     |
| foundationTerm | number | Duration in years of the foundation allocation           |

## Use Cases

* **Yield Modelling**: Project staking returns across future epochs from the taper schedule
* **Tokenomics Research**: Document issuance policy in protocol or investor reporting
* **Dilution Estimates**: Model supply growth against a fixed holding position
* **Cluster Comparison**: Confirm Devnet and Mainnet share the same genesis parameters

## Error Handling

| Error Code | Message        | Description                                              |
| ---------- | -------------- | -------------------------------------------------------- |
| -32602     | Invalid params | Unrecognized commitment level in the config object       |
| -32603     | Internal error | Node failed to read the inflation governor from the bank |