basefeehistory.md

description
Get the base fee history.

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Get the base fee history

Returns the base fee history of the specified blockchain network for the previous 500 blocks.

The base fee is a part of the EIP-1559 upgrade to the Ethereum network, and it represents the minimum price a user must pay for their transaction to be included in a block.

This method can be useful for applications that need to display or analyze the historical base fee data for a specific blockchain network.

GET https://gas.api.infura.io/networks/${chainId}/baseFeeHistory

Parameters

Path:

• chainId: string - ID of the chain to query

Returns

Array of historical base fees.

Example

Request

Include your API key and optional API key secret to authorize your account to use the APIs.

:::tip You can call the API with only an API key, and include it as a path parameter instead of using the curl authentication option (-u). :::

curl -X "GET" \
  -u <YOUR-API-KEY>:<YOUR-API-KEY-SECRET> \
  "https://gas.api.infura.io/networks/1/baseFeeHistory"

const axios = require("axios")

const apiKey = "<YOUR-API-KEY>" // Replace with your API key.
const apiKeySecret = "<YOUR-API-KEY-SECRET>" // Replace with your API key secret.

const Auth = Buffer.from(apiKey + ":" + apiKeySecret).toString("base64")

// The chain ID of the supported network.
const chainId = 1;

(async () => {
  try {
    const { data } = await axios.get(
      `https://gas.api.infura.io/networks/${chainId}/baseFeeHistory`,
      {
        headers: {
          Authorization: `Basic ${Auth}`,
        },
      }
    );
    console.log("Base fee history:", data);
  } catch (error) {
    console.log("Server responded with:", error);
  }
})();

Response

[
  "14.585610312",
  "16.407222984",
  "16.687763116",
  "16.357094117",
  "15.82929799",
  "15.21546789",
  "17.113938208",
  "16.92324819",
  ...
]