Shopify-ATC

A command-line tool that turns any Shopify storefront into a list of direct add-to-cart permalinks.

Point it at a store and it reads the shop's public catalog, then prints a ready-to-click …/cart/add?id=… link for every product variant — so you can drop an item straight into your cart instead of clicking through the product page. Output comes in human-readable text, JSON, or CSV.

How it works

Shopify exposes two public, documented features this tool builds on:

• /products.json — every Shopify store publishes its catalog (products, variants, prices, stock) as JSON. No API key required.
• /cart/add?id=<variant_id> permalinks — Shopify's built-in cart permalink format adds a specific variant to the cart in one request.

Shopify-ATC fetches the first, then generates the second for each variant.

Features

• Add-to-cart links for every variant — resolves each product's variants and builds a /cart/add permalink with a configurable quantity.
• In-stock filtering — --in-stock-only drops sold-out variants so you only see what you can actually buy.
• Three output formats — text for reading, json for piping into other tools, csv for spreadsheets.
• Clear failure modes — a non-Shopify URL, an unreachable host, and an HTTP error each produce a distinct message and a distinct exit code, rather than one catch-all "something went wrong".

Tech Stack

• Language: Python 3.9+
• HTTP: requests
• CLI: argparse (standard library)
• Tests: pytest (HTTP mocked — the suite runs fully offline)
• CI: GitHub Actions, matrix across Python 3.9–3.13

Getting Started

Prerequisites

• Python 3.9 or newer

Installation

# From PyPI (recommended)
pip install shopify-atc

# …or isolated with pipx
pipx install shopify-atc

This installs a shopify-atc command. The package is published on PyPI at pypi.org/project/shopify-atc.

Runnable examples (CLI and library) live in examples/.

For local development from a clone:

# Editable install with test deps
pip install -e ".[dev]"

Usage

shopify-atc <store-url> [--limit N] [--in-stock-only] [--quantity N] [--format text|json|csv]

Flag	Default	Description
store_url	—	Store URL, e.g. https://www.allbirds.com (scheme optional)
--limit	250	Max products to fetch (Shopify's page maximum)
--in-stock-only	off	Only include available variants
--quantity	1	Quantity placed in each cart link
--format	text	text, json, or csv

Examples

# Human-readable, in-stock only
shopify-atc https://www.allbirds.com --in-stock-only

# JSON for scripting
shopify-atc https://www.allbirds.com --limit 50 --format json > catalog.json

# CSV for a spreadsheet
shopify-atc https://www.allbirds.com --format csv > catalog.csv

Text output looks like:

Trino® Cozy Crew - Heathered Onyx
https://www.allbirds.com/products/trino-cozy-crew-heathered-onyx
  S (W5-7) — $24.00
  https://www.allbirds.com/cart/add?id=39574630924368&quantity=1

Exit codes: 0 success · 2 bad arguments or unreachable host · 3 HTTP error from the store · 4 not a Shopify storefront.

Use as a Python library

Everything the CLI does is available programmatically. The key names are re-exported from the top-level package:

import shopify_atc

base = shopify_atc.normalize_url("www.allbirds.com")  # -> https://www.allbirds.com

try:
    products = shopify_atc.fetch_products(base, limit=5)
except shopify_atc.ShopifyError as exc:
    raise SystemExit(str(exc))

products = shopify_atc.filter_in_stock(products)  # optional: drop sold-out variants

# Render to any format the CLI supports:
print(shopify_atc.render(products, "json", base, quantity=1))

# …or work with the dataclasses directly:
for product in products:
    for variant in product.variants:
        print(variant.title, variant.price, f"{base}/cart/add?id={variant.id}&quantity=1")

API at a glance

Name	Description
fetch_products(url, limit=250, *, timeout=15)	Fetch + parse a store's products.json into Product objects. Raises a ShopifyError subclass on failure.
filter_in_stock(products)	Return products keeping only available variants; drops products left empty.
normalize_url(url)	Trim whitespace/trailing slash and default to https:// if no scheme.
render(products, fmt, base_url, quantity)	Render products as "text", "json", or "csv".
Product, Variant	Dataclasses describing a product and its variants.
ShopifyError	Base exception; subclasses NetworkError (exit 2), HTTPError (exit 3), NotShopifyError (exit 4).

Development

# Install with dev dependencies
pip install -e ".[dev]"

# Run the test suite
pytest

Project Structure

Shopify-ATC/
├── shopify_atc/
│   ├── client.py        # fetch + parse products.json into typed dataclasses; typed errors
│   ├── formatters.py    # pure text / json / csv renderers
│   └── cli.py           # argparse + error→exit-code wiring
├── tests/               # offline tests (HTTP mocked)
├── pyproject.toml       # packaging + `shopify-atc` console entry point
└── .github/workflows/   # CI

Responsible use

Shopify-ATC reads only public endpoints and generates links — it does not log in, store payment details, or complete checkouts. It is not affiliated with Shopify. Respect each store's Terms of Service and avoid hammering a storefront with rapid repeated requests.

License

MIT

Author

Jacob Kanfer — GitHub