Strlng.

001 — Tool

Disco

Run a sale. End it cleanly.

A discount and price management CLI for Shopify. Plans are explicit and editable, every write previews before it runs, writes are reversible, and recovery is a documented procedure rather than operator memory. Base prices and market price lists.

Language
Python 3.12+
Licence
Proprietary
Runs
Your machine

002 — The problem

Starting a sale is easy. Ending one exactly is not.

A sale touches the price and compare-at price of every variant, in your base currency and in every market price list. Products already marked down get discounted twice. Broken compare-at prices hide the strikethrough.

When the sale ends, someone has to put every price back exactly as it was. Usually that means a spreadsheet and a good memory.

003 — How it works

The whole sale, start to finish.

  1. 01

    backup

    Snapshot a collection: base prices and every market price list, each entry in its own currency.

  2. 02

    generate

    Build an editable plan from the backup. Set a base discount, scope by colour, give outliers a deeper markdown, prune what shouldn't be on sale.

  3. 03

    apply

    Preview every variant, then confirm. Products already on sale are skipped, never stacked. Broken compare-at prices are healed and flagged.

  4. 04

    unwind

    Write the plan's captured baseline back, variant by variant, base and market. The sale ends where it started.

$ disco --dry-run apply price_plans/summer.json
14 on sale, 2 skipped, 1 healed · 5 product(s) · 2 market(s)
  SKIPPED (already on sale): Field Jacket [Olive] compareAt 240.00 > price 180.00
  SKIPPED (already on sale): Field Jacket [Navy] compareAt 240.00 > price 180.00
  ! Merino Crew [Fog] EU Retail compare-at inverted -> healed (price 92.00, was 78.00)
full preview → price_previews/summer-20260601T091244Z.json

$ disco apply price_plans/summer.json
14 on sale, 2 skipped, 1 healed · 5 product(s) · 2 market(s)
  SKIPPED (already on sale): Field Jacket [Olive] compareAt 240.00 > price 180.00
  SKIPPED (already on sale): Field Jacket [Navy] compareAt 240.00 > price 180.00
  ! Merino Crew [Fog] EU Retail compare-at inverted -> healed (price 92.00, was 78.00)
full preview → price_previews/summer-20260601T091312Z.json
apply these changes? [y/N] y
auto_backup_id: backup-20260601T091318Z
succeeded: 6  failed: 0
ok  gid://shopify/Product/7517161062482  Merino Crew
ok  gid://shopify/Product/7517161095250  Trail Pant
ok  gid://shopify/Product/7517161128018  Camp Mug
ok  gid://shopify/Product/7517161160786  Wool Beanie
ok  price_list  gid://shopify/PriceList/19342164057  EU Retail
ok  price_list  gid://shopify/PriceList/19342164312  UK Retail

004 — Safety

It refuses to write when it shouldn't.

005 — What it doesn't do

Know the edges before you rely on it.

006 — Who it's for

For teams who run sales often and end them on time.

Brands selling in more than one currency. Merchandisers who want an uneven sale without a spreadsheet. Agencies who have been asked, once too often, what the prices were before the promotion.

007 — Get Disco

Disco is available by request while the code is private.

Write with a line about your store and how you would use it. Messages are read by the person who builds the tools.

Request access