Estimate Fees
Overview
You can estimate the blockchain fee at the time you initiate a transaction. However, the actual fee is reassessed when BitGo receives the final signature that approves the transaction. Therefore, the sooner your wallet users sign the transaction, the more accurate the fee estimation is.
UTXO-based coins return a fee per kB. Account-based coins return a flat fee.
Prerequisites
Steps
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15const BitGoJS = require('../../../src/index.js'); const bitgo = new BitGoJS.BitGo({ env: 'test' }); const Promise = require('bluebird'); // Set your access token here const accessToken = 'v2xcbe8617bd58947a9ec41cc7a92e0a9a9d81dc2780669faa59eab3016ad5792ae'; // Set your coin of choice here const coin = 'tbtc'; Promise.coroutine(function *() { bitgo.authenticateWithAccessToken({ accessToken }); bitgo.coin(coin).feeEstimate({ numBlocks: 2 }, function callback(err, res) { console.dir(res); }); })();
Step Result
1 2 3 4 5 6 7 8 9 10 11 12{ "feePerKb": 15902, "cpfpFeePerKb": 0, "numBlocks": 2, "confidence": 80, "multiplier": 0, "feeByBlockTarget": { "1": 50536, "2": 15902, "3": 1579 } }