masterdata-masterdata-storage-strategy

A set of rules for deciding whether VTEX Master Data, VTEX's JSON document storage service, fits a workload. It covers schemas, indexing, caching, security, triggers, capacity, and data lifecycle.

In plain words
What is it for?
Use it to compare Master Data with Catalog, OMS, VBase, or an external database, design JSON Schemas, plan storage capacity, and audit data configurations.
Why use it?
It helps avoid storing data in the wrong VTEX service or designing Master Data schemas that do not meet operational needs. It also supports reviews of existing Master Data use.

Cursor rule

Install

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.

agentmods
npx agentmods add rules/vtex/skills/masterdata-masterdata-storage-strategy
Clone the repo
git clone --depth 1 https://github.com/vtex/skills
Per session 4,785 This file is loaded in full into every session.
When invoked 4,785 The same file — it is already loaded in full.
Security scan A 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.04785 $0.04785
Opus 5 $0.02393 $0.02393
Sonnet 5 $0.00957 $0.00957
Haiku 4.5 $0.00479 $0.00479

Measured 2d ago against content hash a018d8a28322, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

masterdata-masterdata-storage-strategy scanned grade A with 1 finding 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 2d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl "https://{account}.vtexcommercestable.com.br/api/dataentities/{entity}/schemas" \
exports/cursor/masterdata-masterdata-storage-strategy.mdc · 415 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

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.

  1. 2d ago First seen · 415 lines · 4,785 tokens per session scan A a018d8a28322

Subscribe to this mod's changes

masterdata-masterdata-storage-strategy is a cursor rule published in the GitHub repository vtex/skills (42 stars, last pushed 13d ago), with no licence file. It adds 4,785 tokens to every session, about $0.0239 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.