Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add finsilabs/awesome-ecommerce-skills --skill variant-matrixgit clone --depth 1 https://github.com/finsilabs/awesome-ecommerce-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/finsilabs/awesome-ecommerce-skills/variant-matrix)<a href="https://agentmods.dev/skills/finsilabs/awesome-ecommerce-skills/variant-matrix"><img src="https://agentmods.dev/badge/skills/finsilabs/awesome-ecommerce-skills/variant-matrix/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/finsilabs/awesome-ecommerce-skills/variant-matrix"><img src="https://agentmods.dev/badge/skills/finsilabs/awesome-ecommerce-skills/variant-matrix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00027 | $0.02693 |
| Opus 5 | $0.00014 | $0.01347 |
| Sonnet 5 | $0.00005 | $0.00539 |
| Haiku 4.5 | $0.00003 | $0.00269 |
Grade A, and why
variant-matrix scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 267 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Variant Matrix
Overview
Product variants let one product listing cover all size/color/material combinations — each with its own price, SKU, and inventory. Platforms generate the full matrix of combinations from your option values and handle the variant selector UI automatically. The main tasks are: entering options correctly, generating all SKUs, setting per-variant pricing and inventory, and managing large matrices efficiently.
When to Use This Skill
- When modeling apparel, footwear, or accessories where products have multiple option axes
- When importing products from a supplier CSV with flat variant rows that need to be grouped
- When building an admin interface for merchants to manage variant pricing and inventory
- When a variant selector on the product page needs to disable unavailable combinations
Core Instructions
Step 1: Determine platform and understand the variant model
| Platform | Options | Max Variants | Variant Fields |
|---|---|---|---|
| Shopify | Up to 3 options (e.g., Size, Color, Style) | 100 per product | Price, SKU, barcode, inventory, weight, image |
| WooCommerce | Unlimited attributes used as variations | Practically unlimited (performance degrades at ~50+) | Price, sale price, SKU, stock, weight, dimensions, image |
| BigCommerce | Unlimited options per product | 600 SKUs per product | Price adjustment, SKU, stock, weight, image |
| Custom / Headless | Design your own | Unlimited | Design your own variant fields |
Step 2: Platform-specific variant setup
Shopify
Creating variants from options:
- Go to Admin → Products → [Product]
- Scroll to the Options section
- Click Add option to add the first axis (e.g., Size)
- Enter the option values: XS, S, M, L, XL
- Add a second option (e.g., Color): Red, Blue, Black
- Shopify generates all combinations automatically (5 × 3 = 15 variants)
- Scroll to the Variants section to see the generated matrix
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- evals/bulk-price-updates-and-large-matrix-hand/criteria.json 3.3 KB
- evals/bulk-price-updates-and-large-matrix-hand/task.md 2.0 KB
- evals/sku-generation-and-naming-conventions/criteria.json 3.2 KB
- evals/sku-generation-and-naming-conventions/task.md 1.6 KB
- evals/variant-archiving-and-diff-based-updates/criteria.json 3.3 KB
- evals/variant-archiving-and-diff-based-updates/task.md 2.0 KB
- tile.json 236 B
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 267 lines · 27 tokens per session scan A eef6cd3cf2b1
variant-matrix is a skill published in the GitHub repository finsilabs/awesome-ecommerce-skills (52 stars, last pushed 6mo ago), licensed MIT. It adds 27 tokens to every session and 2,693 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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