> ## Documentation Index
> Fetch the complete documentation index at: https://docs.thornode.io/llms.txt
> Use this file to discover all available pages before exploring further.

# getFeeForMessage

> Get the fee the network will charge for a particular Message.

Get the fee the network will charge for a particular Message.

## On ThorNode

Forwarded to the upstream node with a 10 s timeout and one retry on a transport error.

## Parameters

<ParamField body="transaction" type="string" required>
  Base-64 encoded serialized Solana transaction message to calculate the exact fee for.
</ParamField>

<ParamField body="commitment" type="string">
  The commitment level for the request.

  * `confirmed`
  * `finalized`
</ParamField>

<ParamField body="minContextSlot" type="number">
  The minimum slot that the request can be evaluated at.
</ParamField>

## Response

<ResponseField name="context" type="object">
  Context of the response.

  <Expandable title="properties">
    <ResponseField name="slot" type="integer">
      The slot at which the fee was calculated.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="value" type="integer">
  Exact transaction fee in lamports required to process this specific message on the network.
</ResponseField>

<RequestExample>
  ```bash cURL theme={null}
  curl --fail-with-body "$THORNODE_RPC_URL" \
    --header 'content-type: application/json' \
    --data '{
      "jsonrpc": "2.0",
      "id": 1,
      "method": "getFeeForMessage",
      "params": [
        "<BASE64_MESSAGE>",
        {
          "commitment": "processed"
        }
      ]
    }'
  ```

  ```javascript Node.js theme={null}
  const body = {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getFeeForMessage",
    "params": [
      "<BASE64_MESSAGE>",
      {
        "commitment": "processed"
      }
    ]
  };

  const response = await fetch(process.env.THORNODE_RPC_URL, {
    method: "POST",
    headers: { "content-type": "application/json" },
    body: JSON.stringify(body),
  });
  const { result, error } = await response.json();
  console.log(result ?? error);
  ```
</RequestExample>

<ResponseExample>
  ```json Response theme={null}
  {
    "jsonrpc": "2.0",
    "result": {
      "context": {
        "apiVersion": "4.1.2",
        "slot": 439749235
      },
      "value": 5000
    },
    "id": 1
  }
  ```
</ResponseExample>