diff --git a/lib/plugins/wallet/pazuz-wallet/pazuz-wallet.js b/lib/plugins/wallet/pazuz-wallet/pazuz-wallet.js
index cb9d5a72..b17ca734 100644
--- a/lib/plugins/wallet/pazuz-wallet/pazuz-wallet.js
+++ b/lib/plugins/wallet/pazuz-wallet/pazuz-wallet.js
@@ -1,15 +1,25 @@
-const axios_ = require('axios')
 const https = require('https')
+const BN = require('../../../bn')
+const E = require('../../../error')
 
-const URL = 'https://localhost:5555/api/'
-
-const axios = axios_.create({
-  baseURL: URL,
+const axios = require('axios').create({
+  // TODO: get rejectUnauthorized true to work
+  baseURL: 'https://localhost:5555/api/',
   httpsAgent: new https.Agent({
     rejectUnauthorized: false
   })
 })
 
+const SUPPORTED_COINS = ['BTC']
+
+function checkCryptoCode (cryptoCode) {
+  if (!SUPPORTED_COINS.includes(cryptoCode)) {
+    return Promise.reject(new Error('Unsupported crypto: ' + cryptoCode))
+  }
+
+  return Promise.resolve()
+}
+
 function balance (account, cryptoCode, settings, operatorId) {
   return axios.post('/balance', {
     account,
@@ -20,12 +30,25 @@ function balance (account, cryptoCode, settings, operatorId) {
 }
 
 function sendCoins (account, tx, settings, operatorId) {
-  return axios.post('/sendCoins', {
-    account,
-    tx,
-    settings,
-    operatorId
-  }).catch(console.error)
+  const { cryptoCode } = tx
+  try {
+    return checkCryptoCode(cryptoCode).then(() => {
+      return axios.post('/sendCoins', {
+        account,
+        tx,
+        settings,
+        operatorId
+      }).then(({ data }) => {
+        if (data.error && data.error.message === 'insufficient funds') throw new E.InsufficientFundsError()
+        else if (data.error) throw new Error({ error: data.error, message: data.error.message })
+        const fee = BN(data.fee).round()
+        const txid = data.txid
+        return { txid, fee }
+      })
+    })
+  } catch (e) {
+    throw e
+  }
 }
 
 function newAddress (account, info, tx, settings, operatorId) {