Starknet OpenRPC spec
For the latest version of the publicly maintained OpenRPC spec, see the Starknet specs GitHub repo.
Starknet API method that returns an estimate of the fee for Starknet transactions.
It estimates the resources required by transactions when applied on a given state. A client or wallet can use this estimate to determine the appropriate amount of fee to include in a transaction to ensure that the network processes it.
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Parameters
request— the transaction to estimate.block_id— the hash of the requested block, or number (height) of the requested block, or a block tag, for the block referencing the state or call the transaction on.
Response
result— the fee estimation.
Use case
A practical use case for starknet_estimateFee is to calculate the fee required for a transaction that interacts with a contract on Starknet. The fee is an important factor in transactions, as it determines the amount of fees that need to be paid by the sender to the network for processing the transaction.
Deprecated feeder gateway method
The feeder gateway was deprecated on December 11, 2023.
Example of the call you had to make to the feeder gateway before the deprecation:
curl --request POST \
--url 'https://alpha-mainnet.starknet.io/feeder_gateway/estimate_fee?blockNumber=385940' \
--header 'Content-Type: application/json' \
--data-raw '{
"type": "INVOKE_FUNCTION",
"sender_address": "0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10",
"nonce": "0x51",
"max_fee": "0xb3a2f1ab6d632",
"version": "0x1",
"calldata": [
"0x3",
"0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
"0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c",
"0x3",
"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
"0x984e103a8acd6",
"0x0",
"0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8",
"0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c",
"0x3",
"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
"0x4c4b40",
"0x0",
"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
"0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354",
"0xe",
"0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10",
"0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
"0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8",
"0x1f4",
"0xa76cc",
"0xa7b5e",
"0x984e103a8acd6",
"0x0",
"0x4c4b40",
"0x0",
"0x9542431aa6bf1",
"0x0",
"0x4ac4a0",
"0x0"
],
"signature": ["0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29", "0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3"]
}'