# rundler_maxPriorityFeePerGas

> For the complete documentation index, see [llms.txt](/docs/llms.txt).

POST https://eth-mainnet.g.alchemy.com/v2/{apiKey}

Returns a fee per gas that is an estimate of how much users should set as a priority fee in userOperations for Rundler endpoints.

Reference: https://www.alchemy.com/docs/wallets/api-reference/bundler-api/bundler-api-endpoints/rundler-max-priority-fee-per-gas

## Result

**Estimated priority fee** (string): Returns the estimated priority fee per gas to be used in the userOperation for Rundler endpoints.

## Example

### Response

```json
{
  "jsonrpc": "2.0",
  "result": "0xb1770efb14906e509893b6190359658208ae64d0c56e22f748a1b0869885559e",
  "id": 1
}
```

## Code Examples

### cURL

```bash
curl --request POST \
  --url https://eth-mainnet.g.alchemy.com/v2/docs-demo \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "rundler_maxPriorityFeePerGas"
}'
```

### JavaScript

```javascript
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({jsonrpc: '2.0', id: 1, method: 'rundler_maxPriorityFeePerGas'})
};

fetch('https://eth-mainnet.g.alchemy.com/v2/docs-demo', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
```

### Python

```python
import requests

url = "https://eth-mainnet.g.alchemy.com/v2/docs-demo"

payload = {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "rundler_maxPriorityFeePerGas"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)
```

### Go

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://eth-mainnet.g.alchemy.com/v2/docs-demo"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"rundler_maxPriorityFeePerGas\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}
```

### Java

```java
HttpResponse<String> response = Unirest.post("https://eth-mainnet.g.alchemy.com/v2/docs-demo")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"rundler_maxPriorityFeePerGas\"\n}")
  .asString();
```

### C#

```csharp
using RestSharp;


var options = new RestClientOptions("https://eth-mainnet.g.alchemy.com/v2/docs-demo");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddJsonBody("{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"rundler_maxPriorityFeePerGas\"\n}", false);
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

```


## OpenRPC Method Specification

```yaml
name: rundler_maxPriorityFeePerGas
description: Returns a fee per gas that is an estimate of how much users should set as a priority fee in userOperations for Rundler endpoints.
params: []
result:
  name: Estimated priority fee
  description: Returns the estimated priority fee per gas to be used in the userOperation for Rundler endpoints.
  schema:
    type: string
examples:
  - name: rundler_maxPriorityFeePerGas example
    params: []
    result:
      name: Estimated priority fee
      value: '0xb1770efb14906e509893b6190359658208ae64d0c56e22f748a1b0869885559e'
```