eth_gasPrice

eth_gasPrice returns the Avalanche C-Chain node's suggested gas price in wei — the per-unit price, denominated in AVAX, that a legacy (type-0) transaction should pay to be picked up promptly. On the C-Chain, fees are commonly quoted in nAVAX (the chain's gwei-equivalent), and this method gives you a single suggested figure rather than the full EIP-1559 breakdown. Call https://avalanche.therpc.io/YOUR_API_KEY (chain ID 43114) and the response is hex-encoded wei, for example "0x4a817c800".

Use cases

• Quick sanity check of current C-Chain fee conditions before deciding how aggressively to price a transaction.
• Populate the gasPrice field when constructing legacy (type-0) AVAX transactions for tooling that does not build EIP-1559 payloads.
• Feed into a fee oracle as one data point alongside eth_feeHistory percentiles for a more robust AVAX fee model.

Parameters

This method takes no parameters. Pass an empty array [].

Response

Example request

1curl https://avalanche.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H "Content-Type: application/json" \
4  -d '{
5    "jsonrpc": "2.0",
6    "method": "eth_gasPrice",
7    "params": [],
8    "id": 1
9  }'

Try it live in the Avalanche playground.

Errors & troubleshooting

Common pitfalls

• The C-Chain supports EIP-1559, so this single number is a derived suggestion that can overestimate; for type-2 transactions prefer eth_maxPriorityFeePerGas together with eth_feeHistory.
• The result is in wei — to show it to users, divide by 1e9 to get nAVAX (the C-Chain gwei equivalent), and remember 1e18 wei equals one AVAX.

Supported networks

• Mainnet — Chain ID: 43114
• Fuji

See also

• eth_maxPriorityFeePerGas
• eth_feeHistory
• eth_estimateGas

1curl https://avalanche.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H 'Content-Type: application/json' \
4  -d '{"jsonrpc":"2.0","id":1,"method":"eth_gasPrice","params":[]}'