DeckFlow Bridge Browser Extension

The DeckFlow Bridge browser extension lets DeckFlow fetch Moxfield decks from your logged-in browser session when the server path is blocked.

Why it's needed

Moxfield's edge blocks requests from server / datacenter IP ranges. When that happens from a web host, DeckFlow falls back to Commander Spellbook's public Moxfield helper to load the deck, but that fallback does not return card printings, set codes, collector numbers, author tags/categories, or sideboard/maybeboard entries. With the extension installed, the browser fetches the deck directly from your logged-in Moxfield session and submits it through the normal form flow — preserving full metadata.

Install

  1. Open /deckflow-bridge (linked from the Moxfield URL hints in the app).
  2. Download the ZIP from that page.
  3. Unzip it locally.
  4. Load it unpacked via chrome://extensions or edge://extensions (enable Developer mode first).
  5. On the public deckflow.gg site you are done — v0.1.1 and later ship with deckflow.gg and localhost pre-allowed. Only if you run DeckFlow on another host: open the extension's Options page and add that origin to the allowed-origin list.

The extension only responds on origins on its allow list (which now includes deckflow.gg and localhost by default) — explicit allow-listing is the security boundary that stops other sites from driving the bridge. The Moxfield URL import works anywhere DeckFlow serves the deck tools (Moxfield–Archidekt Deck Sync, Deck Analysis, Commander Mana Base Analyzer, and Deck Primer).

What it contains

  • deckflow-bridge.js — the optional DeckFlow web-app bridge.
  • options.html / options.js — the allowed-origin list manager.
  • background.js — handles the cross-origin Moxfield API requests.

Mobile browsers are left on the normal server / fallback path and are not prompted for the extension.

Full metadata alternative

If you can't install the extension, copy the Moxfield deck export text and paste it into DeckFlow's deck input directly. That path continues to work from anywhere and preserves all metadata.