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Amazon memo extension

A small Chrome extension that reads your Amazon order history and writes what you bought into the memo of the matching transaction, turning an opaque AMAZON.COM*A1B2C3 $14.07 charge into USB-C cable 2-pack [#123-4567890-1234567].

It needs no API token and no account changes. It runs on your Ledger page, where you are already signed in, and writes through the app's own edit path, so every change is live in the table, undoable, and respects reconciled-row locks.

Ember is not affiliated with Amazon. The extension acts in your own browser, under the sign-in you already have.

The Amazon memo extension is part of Advanced Budgets.

Sign in to download it, or see what Advanced Budgets includes.

Use it

  1. Open Ledger here (the extension runs on that page only), then open the Amazon account. It touches only accounts you turn on: the first time you open one that looks like an Amazon account it offers to switch order memos on, and that offer comes once per account. The toolbar icon's Accounts pane turns any account on or off afterwards.
  2. With an account on, memos fill in as you select charges: click or arrow onto a charge and its memo appears, with a link that opens that order on Amazon. Turning an account on also fills in whatever is already on screen.
  3. To reach further back than the daily refresh covers, open your Amazon order history and load more order pages. A toast confirms how many orders were cached, and the extension's toolbar icon lists every order it holds.

What it reads, and what it does not

Once a day, when you open an account you have turned on, it opens the two most recent pages of your Amazon order history in background tabs, reads them, and closes them. That is the 20 most recent orders. The tabs open inactive, and nothing is fetched by Ember's servers: the pages are read in your own browser, under the session you are already signed in to.

What it reads stays in the extension's local storage in your browser. It runs on your order history and on your Ledger page, never on Amazon's sign-in page, and it never fills in or submits a sign-in form.

Matching is conservative. It fills the memo only on cash outflows in an account you have turned on that have no memo yet and are not reconciled, where an order's total matches to the penny within a 12-day window. Every write is undoable.

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