# Polygon PoS eth_feeHistory

> Returns historical Polygon PoS gas information.

# `eth_feeHistory`

<Description />

:::info For Growth and Custom service plans

This JSON-RPC method allows a request to be forwarded to a partner service provider if Infura should
experience a service issue or outage. See [Failover protection](../../../concepts/failover-protection.md)
and [Enable API request forwarding](../../../how-to/enable-api-forwarding.md)
for complete details.

If you would like failover protection but don't qualify under your current plan, then either
self-upgrade to the Growth plan or contact a sales representative to upgrade to a Custom plan.

:::

## Parameters

<Params />

## Returns

<Returns />

## Example

<Example />

### Request

<Tabs>
  <TabItem value="curl">

```bash
curl https://polygon-mainnet.infura.io/v3/<YOUR-API-KEY> \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"id": 1, "jsonrpc": "2.0", "method": "eth_feeHistory", "params": ["0x5", "latest", [20,30]] }'
```

  </TabItem>
  <TabItem value="WSS">

```bash
wscat -c wss://polygon-mainnet.infura.io/ws/v3/<YOUR-API-KEY> -x '{"jsonrpc": "2.0", "method": "eth_feeHistory", "params": ["0x5", "latest", []], "id": 1}'
```

  </TabItem>
</Tabs>

### Response

<Response />