eth_estimateGas RPC Method

To use the eth_estimateGas method on the C-Chain, ensure that the end of your URL includes ext/bc/C/rpc.

Parameters

transaction

object

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from

string

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to

string

REQUIRED

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gas

integer

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gasPrice

integer

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value

integer

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data

string

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blockNumber

string

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Returns

quantity

string

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Request

1
curl -X POST "https://docs-demo.flare-mainnet.quiknode.pro/ext/bc/C/rpc/" \
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  -H "Content-Type: application/json" \
3
  -d '{
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  "jsonrpc": "2.0",
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  "method": "eth_estimateGas",
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  "params": [
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    {
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      "from": "0x7Ac6d25FD5E437cB7c57Aee77aC2d0A6Cb85936C",
9
      "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
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      "value": "0x186a0"
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    },
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    "latest"
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  ],
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  "id": 1
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}'

1
curl -X POST "https://docs-demo.flare-mainnet.quiknode.pro/ext/bc/C/rpc/" \
2
  -H "Content-Type: application/json" \
3
  -d '{
4
  "jsonrpc": "2.0",
5
  "method": "eth_estimateGas",
6
  "params": [
7
    {
8
      "from": "0x7Ac6d25FD5E437cB7c57Aee77aC2d0A6Cb85936C",
9
      "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
10
      "value": "0x186a0"
11
    },
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    "latest"
13
  ],
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  "id": 1
15
}'

1
const body = {
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    jsonrpc: '2.0',
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    method: 'eth_estimateGas',
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    params: [{"from":"0x7Ac6d25FD5E437cB7c57Aee77aC2d0A6Cb85936C","to":"0xd3CdA913deB6f67967B99D67aCDFa1712C293601","value":"0x186a0"},"latest"],
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    id: 1
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}
7

8
async function main() {
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    const response = await fetch('https://docs-demo.flare-mainnet.quiknode.pro/ext/bc/C/rpc/', {
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        method: 'POST',
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        headers: {'Content-Type': 'application/json'},
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        body: JSON.stringify(body)
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    })
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    const data = await response.json()
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    console.log(data)
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}
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18
main()

1
const body = {
2
    jsonrpc: '2.0',
3
    method: 'eth_estimateGas',
4
    params: [{"from":"0x7Ac6d25FD5E437cB7c57Aee77aC2d0A6Cb85936C","to":"0xd3CdA913deB6f67967B99D67aCDFa1712C293601","value":"0x186a0"},"latest"],
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    id: 1
6
}
7

8
async function main() {
9
    const response = await fetch('https://docs-demo.flare-mainnet.quiknode.pro/ext/bc/C/rpc/', {
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        method: 'POST',
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        headers: {'Content-Type': 'application/json'},
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        body: JSON.stringify(body)
13
    })
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    const data = await response.json()
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    console.log(data)
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}
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main()

1
import requests
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import json
3

4
url = "https://docs-demo.flare-mainnet.quiknode.pro/ext/bc/C/rpc/"
5

6
payload = json.dumps({
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  "jsonrpc": "2.0",
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  "method": "eth_estimateGas",
9
  "params": [
10
    {
11
      "from": "0x7Ac6d25FD5E437cB7c57Aee77aC2d0A6Cb85936C",
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      "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
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      "value": "0x186a0"
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    },
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    "latest"
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  ],
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  "id": 1
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})
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headers = {
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  'Content-Type': 'application/json'
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}
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23
response = requests.request("POST", url, headers=headers, data=payload)
24

25
print(response.text)

1
import requests
2
import json
3

4
url = "https://docs-demo.flare-mainnet.quiknode.pro/ext/bc/C/rpc/"
5

6
payload = json.dumps({
7
  "jsonrpc": "2.0",
8
  "method": "eth_estimateGas",
9
  "params": [
10
    {
11
      "from": "0x7Ac6d25FD5E437cB7c57Aee77aC2d0A6Cb85936C",
12
      "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
13
      "value": "0x186a0"
14
    },
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    "latest"
16
  ],
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  "id": 1
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})
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headers = {
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  'Content-Type': 'application/json'
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}
22

23
response = requests.request("POST", url, headers=headers, data=payload)
24

25
print(response.text)

1
require "uri"
2
require "json"
3
require "net/http"
4

5
uri = URI("https://docs-demo.flare-mainnet.quiknode.pro/ext/bc/C/rpc/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "eth_estimateGas",
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  params: [{"from":"0x7Ac6d25FD5E437cB7c57Aee77aC2d0A6Cb85936C","to":"0xd3CdA913deB6f67967B99D67aCDFa1712C293601","value":"0x186a0"},"latest"]
12
}
13

14
request = Net::HTTP::Post.new(uri)
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request["Content-Type"] = "application/json"
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request.body = JSON.generate(payload)
17

18
response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
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  http.request(request)
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end
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22
puts response.body

1
require "uri"
2
require "json"
3
require "net/http"
4

5
uri = URI("https://docs-demo.flare-mainnet.quiknode.pro/ext/bc/C/rpc/")
6

7
payload = {
8
  jsonrpc: "2.0",
9
  id: 1,
10
  method: "eth_estimateGas",
11
  params: [{"from":"0x7Ac6d25FD5E437cB7c57Aee77aC2d0A6Cb85936C","to":"0xd3CdA913deB6f67967B99D67aCDFa1712C293601","value":"0x186a0"},"latest"]
12
}
13

14
request = Net::HTTP::Post.new(uri)
15
request["Content-Type"] = "application/json"
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request.body = JSON.generate(payload)
17

18
response = Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
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  http.request(request)
20
end
21

22
puts response.body

Response

1
{
2
  "jsonrpc": "2.0",
3
  "id": 1,
4
  "result": "0x5208"
5
}

1
{
2
  "jsonrpc": "2.0",
3
  "id": 1,
4
  "result": "0x5208"
5
}

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