deco-e2e-testing

A testing setup for measuring the performance of Deco e-commerce sites, including lazy sections, caching, and user journeys. Deco and VTEX are platforms used to build and run online stores.

In plain words
What is it for?
Use it to create end-to-end performance tests and observability for Deco or VTEX sites, including tests for specific customer journeys.
Why use it?
It helps find slow parts of an online store and check whether important shopping flows work under realistic conditions.

Skill for Claude CodeCodexCursor

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 skills/decocms/blocks/deco-e2e-testing
Any agent
npx skills add decocms/blocks --skill deco-e2e-testing
Clone the repo
git clone --depth 1 https://github.com/decocms/blocks

Made for: Claude Code, Codex, Cursor.

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,687 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00061 $0.04687
Opus 5 $0.00030 $0.02344
Sonnet 5 $0.00012 $0.00937
Haiku 4.5 $0.00006 $0.00469

Measured yesterday against content hash 801711ec41db, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

deco-e2e-testing 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 yesterday.

The scan reads SKILL.md. This mod also ships 6 executable files (scripts/scaffold.sh, templates/playwright.config.ts, templates/scripts/baseline.ts, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.cursor/skills/deco-e2e-testing/SKILL.md · 487 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. yesterday First seen · 487 lines · 61 tokens per session scan A 801711ec41db

Subscribe to this mod's changes

deco-e2e-testing is a skill published in the GitHub repository decocms/blocks (5 stars, last pushed 4d ago), with no licence file. It adds 61 tokens to every session and 4,687 once invoked, about $0.0003 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 2026-08-31.

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