Monitor live currency exchange rates and get instant notifications — no API key required. This guide walks you through the Exchange Rate Alert community template.

What It Does

The Exchange Rate Alert template is a 3-step workflow that:

1. Fetches live exchange rates from the free ExchangeRate API
2. Builds a formatted report with your selected currency pair
3. Sends a notification to Telegram, Discord, Slack, LINE, or any webhook

fetch_rate → build_report → send_report

No API key is needed — the ExchangeRate API offers ~1,500 free requests per month.

Quick Start

1. Import the Template

Go to the Marketplace, search for Exchange Rate Alert, and click Install.

2. Configure the Fields

After importing, you'll see three fields in the Builder UI:

Field	Default	Description
Base	USD	Base currency code (e.g., USD, EUR, JPY)
Target	EUR	Target currency code
Webhook URL	—	Your notification webhook URL

3. Set Up Your Notification Channel

Telegram

1. Open Telegram and search for @BotFather
2. Send /newbot and follow the prompts to create your bot
3. Copy the Bot Token (looks like 123456:ABC-DEF...)
4. Send any message to your new bot
5. Open https://api.telegram.org/bot<TOKEN>/getUpdates in your browser
6. Find your Chat ID in the response (e.g., 8719660788)
7. In the template:
   • Webhook URL: https://api.telegram.org/bot<TOKEN>/sendMessage
   • Add chat_id in the send_report step params

Discord

1. Go to Server Settings > Integrations > Webhooks
2. Click New Webhook, choose a channel, and copy the URL
3. Webhook URL: https://discord.com/api/webhooks/xxx/yyy

Slack

1. Go to api.slack.com/apps > Create New App
2. Enable Incoming Webhooks and add to a channel
3. Webhook URL: https://hooks.slack.com/services/xxx/yyy/zzz

LINE Notify

1. Go to notify-bot.line.me and generate a token
2. Webhook URL: https://notify-api.line.me/api/notify

4. Run It

Click Execute and you'll receive a message like:

Exchange Rate Report

Base: USD
Last Updated: Thu, 06 Mar 2026 00:02:31 +0000
Rates: {"EUR": 0.92, "GBP": 0.79, "JPY": 149.85, ...}

How It Works Under the Hood

Step 1: fetch_rate — HTTP Request

Calls https://open.er-api.com/v6/latest/[[base]] where [[base]] is replaced with your chosen currency code (e.g., USD).

Step 2: build_report — Text Template

Formats the raw API response into a readable report using data.text.template:

template: |
  Exchange Rate Report
  Base: {base}
  Last Updated: {time}
  Rates: {rates}
variables:
  base: "[[base]]"
  time: "${fetch_rate.data.body.time_last_update_utc}"
  rates: "${fetch_rate.data.body.rates}"

Step 3: send_report — Notify Send

Sends the formatted report via notify.send. The module auto-detects the platform from the webhook URL — no extra configuration needed for Discord, Slack, or LINE.

Customization Ideas

• Add a filter step — Only notify when a specific rate crosses a threshold (e.g., USD/JPY > 150)
• Schedule it — Add a trigger.schedule to run every hour or daily
• Multiple currencies — Duplicate the workflow for different currency pairs
• Rich formatting — Use Discord embeds or Slack blocks by customizing the title field

API Reference

• ExchangeRate API: open.er-api.com
• Rate Limit: ~1,500 requests/month (free tier)
• Supported Currencies: 150+ currencies including crypto
• No API key required

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Ready to try it? Install the template from the Marketplace and start monitoring exchange rates in minutes.