quality-engineering-selector-stability SKILL.md skillA
quality-engineering-selector-stability from hoangnguyen0403/agent-skills-standard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hoangnguyen0403/agent-skills-standard/quality-engineering-selector-stability@git:20260906.c5a4f43Pins git:20260906.c5a4f43 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hoangnguyen0403/agent-skills-standard
- Path
.codex/skills/quality-engineering/quality-engineering-selector-stability/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260906.c5a4f43, committed Sep 6, 2026
- Size
- 2,071 bytes
- Repository stars
- 583
- License
- MIT
Cross-stack selector and test-id policy for web and mobile automation. Use when writing or reviewing E2E/UI test locators, or adding data-testid/accessibility identifiers to components.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Quality Engineering: Selector Stability ## **Priority: P0 (CRITICAL)** ## Web Ladder `getByRole` / `getByLabel` > `getByTestId` (`data-testid`) > attribute CSS. Never XPath, `nth-child`, or generated class names. ## Mobile Ladder Accessibility id > resource-id / `testTag` > predicate/uiautomator > XPath. Never XPath. ## Framework Map - React/Next.js: `data-testid`. React Native: `testID` + `accessibilityLabel`. - Flutter: `Semantics(identifier:)` for black-box E2E; `WidgetKeys` stay for widget tests. - SwiftUI/UIKit: `.accessibilityIdentifier`. Compose: `Modifier.testTag` + `testTagsAsResourceId = true`. ## Naming `<screen>-<element>-<role>`, kebab-case (e.g. `checkout-submit-button`). ## Insertion Policy Add ids to leaf interactive/assertable elements only, never layout wrappers. Never rename an existing id — ids are a public contract other tests depend on. ## Drift Classes `rename` (id changed), `restructure` (DOM/tree moved), `i18n` (visible text changed, id untouched). ## Anti-Patterns - Text selectors on translated strings, index-based locators (`nth`), generated/hashed class names. …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/quality-engineering-selector-stability@sha256:fcca95212bea3898The line at the top of this page pins the label git:20260906.c5a4f43, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_6y6cn6weoin3rgah)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 6, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2071 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hoangnguyen0403/agent-skills-standard · 583 stars · license MIT · pushed 2026-11-07 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_6y6cn6weoin3rgah GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/quality-engineering-selector-stability GET https://markdownregistry.com/api/v1/blob/fcca95212bea38987a0c63d0f2ec8d5a1c7ba0281dfd1ce8d90c58fefe80b077
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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