API reference

This section provides reference information for the various Gas REST APIs. Use the APIs to:

• Get EIP-1559 gas prices.
• Get the base fee history (in Gwei).
• Get the base fee percentile (in Gwei).
• Get the busy threshold for a network.

Supported API request formats

You can call the Gas APIs in two ways:

• Using the API key only - Add your API key as a path option.
• Using the API key and API key secret - Use basic authentication and specify the API key and API key secret.

Use an API key only

curl -X 'GET' "https://gas.api.infura.io/v3/<API_KEY>/networks/1/suggestedGasFees"

Use an API key and API key secret

curl -X 'GET' -u <API_KEY>:<API_KEY_SECRET> "https://gas.api.infura.io/networks/1/suggestedGasFees"