0.3.0

Allows for usage with CHF.

.gitignore

@@ -1,2 +1,3 @@
 .env
 node_modules
+stacksats.sh

README.md

@@ -13,6 +13,16 @@ Also the version is fixed, so that unwanted changes do not slip in.
 
 However: Use this at your own risk and decide for yourself whether or not you want to run this script and its dependencies!
 
+## 🔑 API Key
+
+Obtain your Kraken API Key via [the API settings page](https://www.kraken.com/u/settings/api).
+Generate a new API key dedicated for stacking using the "Query Funds" and "Modify Orders" permissions:
+
+![Kraken API Key Permissions](./api-permissions.png)
+
+Only check the "Withdraw Funds" option if you plan to automatically withdraw Bitcoin from Kraken.
+See details below.
+
 ## 📦 Setup
 
 Prerequisite: At least the current LTS version of [Node.js](https://nodejs.org/).
@@ -26,16 +36,26 @@ npm install
 Setup the environment variables for the script:
 
 ```sh
+# used to authenticate with Kraken
 export KRAKEN_API_KEY="apiKeyFromTheKrakenSettings"
 export KRAKEN_API_SECRET="privateKeyFromTheKrakenSettings"
+
+# used for buying
 export KRAKEN_API_FIAT="USD" # the governmental shitcoin you are selling
 export KRAKEN_BUY_AMOUNT=21 # fiat amount you trade for the future of money
+
+# used for withdrawal
+export KRAKEN_MAX_REL_FEE=0.5 # maximum fee in % that you are willing to pay
+export KRAKEN_WITHDRAW_KEY="descriptionOfWithdrawalAddress"
+
+# remove this line after verifying everything works
+export KRAKEN_DRY_RUN_PLACE_NO_ORDER=1
 ```
 
 Use a dry run to test the script and see the output without placing an order:
 
 ```sh
-npm test
+npm run test:stack
 ```
 
 You should see something like this sample output:
@@ -55,13 +75,13 @@ You should see something like this sample output:
 When you are good to go, execute this command in a regular interval:
 
 ```sh
-npm run stack-sats
+npm run stack
 ```
 
 The best and easiest way is to wrap it all up in a shell script.
 This script can be triggered via cron job, e.g. weekly, daily or hourly.
 
-Here's a sample `stack-sats.sh` script:
+Here's a sample `stacksats.sh` script:
 
 ```sh
 #!/bin/bash
@@ -74,19 +94,111 @@ export KRAKEN_API_KEY="apiKeyFromTheKrakenSettings"
 export KRAKEN_API_SECRET="privateKeyFromTheKrakenSettings"
 export KRAKEN_API_FIAT="USD"
 export KRAKEN_BUY_AMOUNT=21
+export KRAKEN_MAX_REL_FEE=0.5
+export KRAKEN_WITHDRAW_KEY="descriptionOfWithdrawalAddress"
+export KRAKEN_DRY_RUN_PLACE_NO_ORDER=1
 
+# run script
 BASE_DIR=$(cd `dirname $0` && pwd)
 cd $BASE_DIR/stacking-sats-kraken
-result=$(npm run stack-sats 2>&1)
-echo $result
+cmd=${1:-"stack"}
 
-# Optional: Send yourself an email
+if [[ "${KRAKEN_DRY_RUN_PLACE_NO_ORDER}" ]]; then
+  result=$(npm run test:$cmd --silent 2>&1)
+else
+  result=$(npm run $cmd --silent 2>&1)
+fi
+echo "$result"
+
+# optional: send yourself an email
 recipient="satstacker@example.org"
 echo "Subject: Sats got stacked
 From: satstacker@example.org
 To: $recipient $result" | /usr/sbin/sendmail $recipient
 ```
 
-Make it executable with `chmod +x stack-sats.sh` and go wild.
+Make it executable with `chmod +x stacksats.sh` and go wild.
 
 [Stay humble!](https://twitter.com/matt_odell/status/1117222441867194374) 🙏
+
+## 🔑 Withdrawal
+
+Holding significant amounts on an exchange is never a good idea.
+You should regularly take ownership of your coins by withdrawing to your own wallet.
+This can either be done manually or it can be automated.
+The script provided here will only withdraw to a previously defined Bitcoin address if the relative fees do not exceed a certain limit.
+
+*It is optional to run the withdrawal script.*
+
+### Example 1
+
+- Max. relative fee: 0.5%
+- Fixed Kraken fee: ₿ 0.00050
+- Balance: ₿ 0.06000
+➡️ No withdrawal since fee actual (0.83%) is too high
+
+### Example 2
+
+- Max. relative fee: 0.5%
+- Fixed Kraken fee: ₿ 0.00050
+- Balance: ₿ 0.12000
+➡️ Withdrawal executed since actual fee (0.42%) is low enough
+
+In case you plan to automatically withdraw from Kraken, a withdrawal method must first be defined.
+If you already set up a methode you can reuse it.
+Otherwise generate a new one by going to **Funding > Bitcoin (XBT) withdraw > Add address**.
+The description field will later be used as an environment variable in the script.
+
+To test the withdrawal of funds to your defined address run:
+
+```sh
+npm run test:withdraw
+```
+
+You should see something like this:
+
+```text
+💡  Relative fee of withdrawal amount: 5.57%
+❌  Fee is too high – max rel. fee: 0.50%
+```
+
+It is recommended to run the withdrawal script every time you stacked sats:
+
+```sh
+npm run withdraw
+```
+
+Since it can take a couple seconds or minutes for your order to fill, you should run the following script a couple hours later after the stacking script.
+Just set up a second cron job which executes the withdrawal script.
+
+If you are using the aforementioned `stacksats.sh` script you can withdraw via this command:
+`stacksats.sh withdraw`
+
+## ⚡️ RaspiBlitz Integration
+
+This script ships with the [RaspiBlitz](https://github.com/rootzoll/raspiblitz) (v1.6 and above).
+
+You can enable it via the Console of your RaspiBlitz.
+Leave the main menu via the last option "Console" and use the following commands:
+
+```sh
+# enable the script
+./config.scripts/bonus.stacking-sats-kraken.sh on
+
+# switch to the stackingsats user
+sudo su - stackingsats
+
+# edit your configuration (see "Setup" above)
+nano /mnt/hdd/app-data/stacking-sats-kraken/.env
+
+# follow the instructions from the first step to set up a cronjob
+crontab -e
+```
+
+Here is an example for a daily cronjob at 6:15am ...
+
+```sh
+SHELL=/bin/bash
+PATH=/bin:/usr/sbin:/usr/bin:/usr/local/bin
+15 6 * * * /home/stackingsats/stacksats.sh > /dev/null 2>&1
+```

commands/stack.js

@@ -0,0 +1,34 @@
+module.exports = async (kraken, validate, getEnv) => {
+  const [fiat, amount] = getEnv('KRAKEN_API_FIAT', 'KRAKEN_BUY_AMOUNT')
+
+  // https://www.kraken.com/features/api
+  const crypto = 'XBT'
+  const pair = `${crypto}${fiat}`
+
+  // Fetch and display information
+  const { result: balance } = await kraken.api('Balance')
+  const { result: ticker } = await kraken.api('Ticker', { pair })
+
+  const fiatBalance = balance[`Z${fiat}`] || balance[fiat] || 0.0
+  const cryptoBalance = balance[`X${crypto}`] || balance[crypto] || 0.0
+  const [{ a: [a], b: [b] }] = Object.values(ticker)
+  const ask = parseFloat(a)
+  const bid = parseFloat(b)
+  const price = bid
+
+  // Calculate volume and adjust precision
+  const volume = (amount / price).toFixed(8)
+
+  console.log('💰  Balance:', fiatBalance, fiat, '/', cryptoBalance, crypto, '\n')
+  console.log('📈  Ask:', ask, fiat)
+  console.log('📉  Bid:', bid, fiat, '\n')
+
+  // Place order
+  const details = { pair, type: 'buy', ordertype: 'limit', price, volume }
+  if (validate) details.validate = true
+
+  const { result: { descr: { order }, txid } } = await kraken.api('AddOrder', details)
+
+  console.log('💸  Order:', order)
+  if (txid) console.log('📎  Transaction ID:', txid.join(', '))
+}

commands/withdraw.js

@@ -0,0 +1,25 @@
+module.exports = async (kraken, validate, getEnv) => {
+  const [maxFee, key] = getEnv('KRAKEN_MAX_REL_FEE', 'KRAKEN_WITHDRAW_KEY')
+
+  // https://api.kraken.com/0/private/WithdrawInfo
+  const asset = 'XBT'
+  const withdrawdetails = { asset, key, amount: 0 }
+
+  // Get withdrawal information
+  const { result: { limit, fee } } = await kraken.api('WithdrawInfo', withdrawdetails)
+  const relFee = 1/parseFloat(limit)*parseFloat(fee)
+
+  console.log(`💡  Relative fee of withdrawal amount: ${(relFee*100).toFixed(2)}%`)
+
+  // Place withdrawal when fee is low enough (relatively)
+  if (relFee < maxFee/100) {
+    console.log(`💰  Withdraw ${limit} ${asset} now.`)
+    const withdraw = { asset, key, amount: limit }
+    if (!validate) {
+      const { result: { refid } } = await kraken.api('Withdraw', withdraw)
+      if (refid) console.log(`📎  Withdrawal reference ID: ${refid}`)
+    }
+  } else {
+    console.log(`❌  Fee is too high - max rel. fee: ${parseFloat(maxFee).toFixed(2)}%`)
+  }
+}

index.js

@@ -1,48 +1,23 @@
 const assert = require('assert')
 const Kraken = require('kraken-api')
 
-const {
-  KRAKEN_API_KEY: key,
-  KRAKEN_API_SECRET: secret,
-  KRAKEN_API_FIAT: fiat,
-  KRAKEN_BUY_AMOUNT: amount
-} = process.env
-
-assert(key && secret, 'Provide the KRAKEN_API_KEY and KRAKEN_API_SECRET environment variables.')
-assert(fiat && amount, 'Provide the KRAKEN_API_FIAT and KRAKEN_BUY_AMOUNT environment variables.')
-
-// https://www.kraken.com/features/api
-const kraken = new Kraken(key, secret)
-const crypto = 'XBT'
-const pair = `X${crypto}Z${fiat}`
-const validate = process.argv[2] === '--validate'
+const getEnv = (...vars) => vars.map(name => {
+  const value = process.env[name]
+  assert(value, `Provide the ${name} environment variable.`)
+  return value
+})
+const command = process.argv[2].replace('--cmd=', '')
+const validate = process.argv.includes('--validate') || process.env['KRAKEN_DRY_RUN_PLACE_NO_ORDER']
 
 ;(async () => {
-  // Fetch and display information
-  const { result: { [`Z${fiat}`]: fiatBalance, [`X${crypto}`]: cryptoBalance } } = await kraken.api('Balance')
-  const { result: { [pair]: { a: [a], b: [b] } } } = await kraken.api('Ticker', { pair })
-
-  const ask = parseFloat(a)
-  const bid = parseFloat(b)
-  const price = bid
-
-  // Calculate volume and adjust precision
-  const volume = (amount / price).toFixed(8)
-
-  console.log('💰  Balance:', fiatBalance, fiat, '/', cryptoBalance, crypto, '\n')
-  console.log('📈  Ask:', ask, fiat)
-  console.log('📉  Bid:', bid, fiat, '\n')
-
-  // Place order
   try {
-    const details = { pair, type: 'buy', ordertype: 'limit', price, volume }
-    if (validate) details.validate = true
+    const [apiKey, secret] = getEnv('KRAKEN_API_KEY', 'KRAKEN_API_SECRET')
+    const kraken = new Kraken(apiKey, secret)
 
-    const { result: { descr: { order }, txid } } = await kraken.api('AddOrder', details)
+    const cmd = require(`./commands/${command}`)
+    await cmd(kraken, validate, getEnv)
 
-    console.log('💸  Order:', order)
-    if (txid) console.log('📎  Transaction ID:', txid.join(', '))
-    if (validate) console.log('\n🚨  THIS WAS JUST A VALIDATION RUN, NO ORDER HAS BEEN PLACED!')
+    if (validate) console.log('\n🚨  THIS WAS JUST A VALIDATION RUN!')
   } catch (err) {
     console.log(`\n🚨  Failure:`, err.message)
   }

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "stacking-sats-kraken",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,14 +1,16 @@
 {
   "private": true,
   "name": "stacking-sats-kraken",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "Use the Kraken API to stack sats",
   "author": "Dennis Reimann <mail@dennisreimann.de>",
   "license": "MIT",
-  "main": "index.js",
+  "main": "stack.js",
   "scripts": {
-    "stack-sats": "node index.js",
-    "test": "node index.js --validate"
+    "stack": "node index.js --cmd=stack",
+    "withdraw": "node index.js --cmd=withdraw",
+    "test:stack": "node index.js --cmd=stack --validate",
+    "test:withdraw": "node index.js --cmd=withdraw --validate"
   },
   "dependencies": {
     "kraken-api": "1.0.0"