/transaction/fee-estimate REST API Endpoint

Body Parameters

tx

string

REQUIRED

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Returns

weight

object

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refTime

string

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proofSize

string

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class

string

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partialFee

string

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Request

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# AssetHub (default) - for transaction fee estimation on AssetHub parachain
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curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/transaction/fee-estimate' \
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--header 'Content-Type: application/json' \
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--header 'Accept: application/json' \
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--data '{
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  "tx": "YOUR_TRANSACTION"
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}'
8

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# Polkadot Relaychain - for transaction fee estimation on Relaychain (requires /rc prefix)
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curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/rc/transaction/fee-estimate' \
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--header 'Content-Type: application/json' \
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--header 'Accept: application/json' \
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--data '{
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  "tx": "YOUR_TRANSACTION"
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}'

1
# AssetHub (default) - for transaction fee estimation on AssetHub parachain
2
curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/transaction/fee-estimate' \
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--header 'Content-Type: application/json' \
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--header 'Accept: application/json' \
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--data '{
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  "tx": "YOUR_TRANSACTION"
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}'
8

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# Polkadot Relaychain - for transaction fee estimation on Relaychain (requires /rc prefix)
10
curl --location 'https://docs-demo.dot-mainnet.quiknode.pro/rc/transaction/fee-estimate' \
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--header 'Content-Type: application/json' \
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--header 'Accept: application/json' \
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--data '{
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  "tx": "YOUR_TRANSACTION"
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}'

1
// For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
2

3
const myHeaders = new Headers();
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myHeaders.append("Content-Type", "application/json");
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myHeaders.append("Accept", "application/json");
6

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const raw = JSON.stringify({
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  "tx": "YOUR_TRANSACTION"
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});
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const requestOptions = {
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  method: "POST",
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  headers: myHeaders,
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  body: raw,
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  redirect: "follow"
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};
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fetch("{(url}}transaction/fee-estimate", requestOptions)
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  .then((response) => response.text())
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  .then((result) => console.log(result))
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  .catch((error) => console.error(error));

1
// For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
2

3
const myHeaders = new Headers();
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myHeaders.append("Content-Type", "application/json");
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myHeaders.append("Accept", "application/json");
6

7
const raw = JSON.stringify({
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  "tx": "YOUR_TRANSACTION"
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});
10

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const requestOptions = {
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  method: "POST",
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  headers: myHeaders,
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  body: raw,
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  redirect: "follow"
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};
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fetch("{(url}}transaction/fee-estimate", requestOptions)
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  .then((response) => response.text())
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  .then((result) => console.log(result))
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  .catch((error) => console.error(error));

1
import requests
2
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
3

4
import json
5

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url = "{(url}}transaction/fee-estimate"
7

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payload = json.dumps({
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  "tx": "YOUR_TRANSACTION"
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})
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headers = {
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  'Content-Type': 'application/json',
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  'Accept': 'application/json'
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}
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response = requests.request("POST", url, headers=headers, data=payload)
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print(response.text)
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1
import requests
2
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
3

4
import json
5

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url = "{(url}}transaction/fee-estimate"
7

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payload = json.dumps({
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  "tx": "YOUR_TRANSACTION"
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})
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headers = {
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  'Content-Type': 'application/json',
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  'Accept': 'application/json'
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}
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response = requests.request("POST", url, headers=headers, data=payload)
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print(response.text)
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1
require "uri"
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require "json"
3
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
4

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require "net/http"
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url = URI("{(url}}transaction/fee-estimate")
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http = Net::HTTP.new(url.host, url.port);
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request = Net::HTTP::Post.new(url)
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request["Content-Type"] = "application/json"
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request["Accept"] = "application/json"
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request.body = JSON.dump({
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  "tx": "YOUR_TRANSACTION"
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})
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response = http.request(request)
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puts response.read_body
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1
require "uri"
2
require "json"
3
# For Polkadot Relaychain access, add '/rc' after https://docs-demo.dot-mainnet.quiknode.pro/ (e.g., https://docs-demo.dot-mainnet.quiknode.pro/rc/accounts/...)
4

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require "net/http"
6

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url = URI("{(url}}transaction/fee-estimate")
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http = Net::HTTP.new(url.host, url.port);
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request = Net::HTTP::Post.new(url)
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request["Content-Type"] = "application/json"
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request["Accept"] = "application/json"
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request.body = JSON.dump({
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  "tx": "YOUR_TRANSACTION"
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})
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response = http.request(request)
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puts response.read_body
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