Castlog Companion
Your MTG games. Automatically tracked.
A browser extension for Chrome and Firefox that auto-detects your games on SpellTable and Convoke, tracks everything in real-time, and saves your match with one click.
How It Works
1. Install & Connect
Install the extension from the Chrome Web Store or Firefox Add-ons and log in with your Castlog account. One-time setup, takes 30 seconds.
2. Play Your Game
The extension auto-detects when you start a game on SpellTable or Convoke. Life totals, commander damage, and turn times are tracked in real-time.
3. Save & Analyze
When the game ends, a save popup appears. Review the results, confirm, done. Your match appears in Castlog stats instantly.
Features
Automatically detects when a game starts and ends on supported platforms. No manual triggers needed.
Life totals, commander damage, and poison counters are captured as you play. Full life protocol saved with every match.
Per-player turn times tracked automatically. See who takes the longest turns and how game pace evolves.
Auto-fills players, commanders, and results. Matches decks from your Castlog library. Just confirm and save.
If your connection drops, match data is queued locally and synced automatically when you're back online.
Full support for SpellTable and Convoke. More platforms coming soon based on community feedback.
Installation Guide
Option A: Chrome Web Store (Recommended)
Visit the Castlog Companion listing on the Chrome Web Store and click "Add to Chrome".
Confirm the permissions prompt. The extension only accesses SpellTable and Convoke pages.
Done! The extension icon appears in your Chrome toolbar. Connect your account (see below).
Option B: Firefox Add-ons
Visit the Castlog Companion listing on Firefox Add-ons and click "Add to Firefox".
Connect Your Account
Click the Castlog icon in your browser toolbar.
Enter your API token, which you can find in the Castlog app under Settings > API.
You're connected! Start a game on SpellTable or Convoke and the extension will do the rest.
Frequently Asked Questions
Chrome, Firefox, and all Chromium-based browsers including Microsoft Edge, Brave, and Arc.
Yes, completely free. The Castlog Companion extension is included with every Castlog account at no extra cost.
Currently, the extension supports SpellTable and Convoke. We're actively working on adding more platforms based on community feedback.
Saved matches appear in your Castlog match history with full life protocol, turn time data, and commander damage. They count toward all your stats, leagues, and analytics just like manually logged matches.
Track Your Online Games Automatically
Install the Companion, play on SpellTable or Convoke, and never manually log an online match again.