> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# starknet_estimateFee | Starknet

> Starknet API method that returns an estimate of the fee for Starknet transactions. starknet_estimateFee on Starknet via Chainstack.

<Note>
  **Starknet OpenRPC spec**

  For the latest version of the publicly maintained OpenRPC spec, see the [Starknet specs GitHub repo](https://github.com/starkware-libs/starknet-specs).
</Note>

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.

## 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](https://community.starknet.io/t/feeder-gateway-deprecation/100233).

Example of the call you had to make to the feeder gateway before the deprecation:

```Text Shell theme={"system"}
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"]
     }'
```


## OpenAPI

````yaml openapi/starknet_node_api/starknet_estimateFee.json POST /365cf697a3ad6d950b4c4a911e2e4f4d
openapi: 3.0.0
info:
  title: starknet
  version: 1.0.0
  contact: {}
servers:
  - url: https://starknet-mainnet.core.chainstack.com
security: []
paths:
  /365cf697a3ad6d950b4c4a911e2e4f4d:
    post:
      summary: starknet_estimateFee
      description: starknet_estimateFee
      operationId: starknetEstimateFee
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                id:
                  type: integer
                jsonrpc:
                  type: string
                method:
                  type: string
                params:
                  type: object
                  properties:
                    request:
                      type: array
                      items:
                        type: object
                        properties:
                          type:
                            type: string
                          max_fee:
                            $ref: '#/components/schemas/FELT'
                          version:
                            type: string
                          signature:
                            type: array
                            items:
                              $ref: '#/components/schemas/FELT'
                          sender_address:
                            type: string
                          calldata:
                            type: array
                            items:
                              $ref: '#/components/schemas/FELT'
                          nonce:
                            $ref: '#/components/schemas/FELT'
                    block_id:
                      type: object
                      properties:
                        block_number:
                          type: integer
              default:
                id: 0
                jsonrpc: '2.0'
                method: starknet_estimateFee
                params:
                  request:
                    - type: INVOKE
                      max_fee: '0xb3a2f1ab6d632'
                      version: '0x1'
                      signature:
                        - >-
                          0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29
                        - >-
                          0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3
                      sender_address: >-
                        0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10
                      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'
                      nonce: '0x51'
                  block_id:
                    block_number: 385940
      responses:
        '200':
          description: Successful response
components:
  schemas:
    FELT:
      type: string
      title: Field element
      description: A field element. represented by at most 63 hex digits
      pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$

````