> 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/getrecentprioritizationfees-solana.md).

# getRecentPrioritizationFees - Solana

This method returns a list of prioritization fees observed in recent slots, optionally scoped to transactions that lock a given set of accounts. Prioritization fees are paid per compute unit on top of the base fee.

## Parameters

| Parameter | Type  | Required | Description                                                           |
| --------- | ----- | -------- | --------------------------------------------------------------------- |
| addresses | array | No       | Array of up to 128 base58-encoded account Pubkeys to scope the sample |

## Request

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

```bash
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "getRecentPrioritizationFees",
    "params": [["JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4"]],
    "id": "getblock.io"
}'
```

{% endcode %}
{% endtab %}

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

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

const connection = new Connection('https://go.getblock.io/<ACCESS-TOKEN>/', 'confirmed');

const fees = await connection.getRecentPrioritizationFees({
  lockedWritableAccounts: [new PublicKey('JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4')]
});

console.log(fees.slice(0, 5));
```

{% endcode %}
{% endtab %}

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

```python
import requests

response = requests.post(
    'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'getRecentPrioritizationFees',
        'params': [["JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4"]],
        '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://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&json!({
            "jsonrpc": "2.0",
            "method": "getRecentPrioritizationFees",
            "params": [["JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4"]],
            "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": [
        {
            "slot": 397234560,
            "prioritizationFee": 0
        },
        {
            "slot": 397234561,
            "prioritizationFee": 12500
        }
    ]
}
```

## Response Parameters

| Parameter | Type   | Description                                  |
| --------- | ------ | -------------------------------------------- |
| jsonrpc   | string | JSON-RPC protocol version ("2.0")            |
| id        | string | Request identifier matching the request      |
| result    | array  | Array of per-slot prioritization fee samples |

### Sample Entry

| Field             | Type   | Description                                              |
| ----------------- | ------ | -------------------------------------------------------- |
| slot              | number | Slot the fee sample was taken from                       |
| prioritizationFee | number | Fee in micro-lamports per compute unit paid in that slot |

## Use Cases

* **Dynamic Fee Bidding**: Set a compute unit price from recent percentiles instead of a fixed value
* **Congestion Detection**: Identify hot accounts where writes are being contested
* **Swap Routing**: Price prioritization into quotes before submitting to a DEX program
* **Cost Dashboards**: Chart fee pressure per program over recent slots

## Error Handling

| Error Code | Message        | Description                                            |
| ---------- | -------------- | ------------------------------------------------------ |
| -32602     | Invalid params | More than 128 addresses supplied or a malformed Pubkey |
| -32603     | Internal error | Node failed to read the prioritization fee cache       |


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://docs.getblock.io/api-reference/solana-sol/getrecentprioritizationfees-solana.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.