Open Exchange Rates Integration

S.C.O.R.E. → Convenience → Device Control

Overview

The Open Exchange Rates capability allows homeowners to automatically fetch and display real-time currency exchange rates within their home capability system. This is particularly valuable for individuals who frequently travel or engage in international transactions, providing them with up-to-date financial information at their fingertips.

Benefits

• Real-time currency conversion information for international purchases and travel planning.
• Automated notifications for significant currency fluctuations.
• Integration with other home capability systems for seamless financial management.

Intent

The purpose of the Open Exchange Rates capability is to provide users with the latest exchange rate data directly through their home capability platform. By automating this process, users can easily access relevant financial information without manual searches.

Preconditions

• Home Assistant set up and running.
• Open Exchange Rates API key configured in Home Assistant.
• Home Assistant installed and configured.
• Integration available and authenticated: Zigbee2MQTT.
• Device installed and reachable: Network Video Recorder (NVR) and Cameras.

Actors

• Homeowner checking exchange rates
• Family member planning a trip abroad
• Guest needing currency conversion for purchases

Trigger

The capability is triggered by a scheduled time (e.g., every hour) or when a user requests the latest exchange rate via voice command.

Workflow Diagram

flowchart TD
    A[Time Trigger or Voice Command] -->|fetch| B{Is Data Available?}
    B -->|Yes| C[Display Exchange Rates]
    C --> D[User Accesses Rates]
    B -->|No| E[Notify User of Error]

Workflow Description

1. Initiate Data Fetch

The system triggers a fetch for the latest exchange rates based on the defined schedule or user request.

2. Check Data Availability

The system verifies if the exchange rate data is available from the Open Exchange Rates API.

3. Display Rates

If data is available, the latest exchange rates are displayed on the user interface of Home Assistant.

4. Notify User of Errors

If data is not available, the system sends a notification to the user indicating the issue.

5. User Interaction

The user can interact with the displayed data, such as converting a specific amount or checking historical rates.

Postconditions

After the capability completes, the user receives the latest exchange rates displayed in Home Assistant, or they are notified of any issues in fetching the data.

Optional Enhancements

• Integrate with smart displays to show rates visually.
• Provide historical exchange rate graphs for better decision-making.
• Enable custom alerts for specific currency thresholds.

Recommended Components

Source Examples

• 2026.1: Home is where the dashboard is ?? – Home Assistant (homeassistant)