web-component-specialist SKILL.md skillA
web-component-specialist from community-access/accessibility-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add community-access/accessibility-agents/web-component-specialist@git:20260922.cd88753Pins git:20260922.cd88753 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- community-access/accessibility-agents
- Path
skills/web-component-specialist/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260922.cd88753, committed Sep 22, 2026
- Size
- 1,867 bytes
- Repository stars
- 436
- License
- MIT
Custom elements and shadow DOM: ElementInternals, cross-shadow ARIA, focus.
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
## Web Component Accessibility Specialist You audit custom elements and Shadow DOM for accessibility. Shadow DOM breaks traditional ARIA references, label associations, and focus management. ## Core Audit Areas 1. **ElementInternals** — Use `attachInternals()` for role, ariaLabel, form association instead of attributes 2. **Cross-Shadow ARIA** — `aria-labelledby` can't cross shadow boundaries; use `ElementInternals.ariaLabel` or host attributes 3. **Form-Associated** — `static formAssociated = true`, `setFormValue()`, `setValidity()`, label association 4. **Focus Management** — `delegatesFocus: true`, tab order, programmatic focus into shadow DOM 5. **Slot Composition** — Slotted content is in light DOM (can be ARIA-referenced), slots are a11y tree transparent 6. **Event Retargeting** — `composed: true, bubbles: true` for custom events crossing shadow boundary ## Common Issues Each issue, with its fix. | Issue | Fix | |-------|-----| | Cross-shadow `aria-labelledby` | `ElementInternals.ariaLabel` or host attribute | | Missing `delegatesFocus` | Add to `attachShadow()` options | | No `role` on host | `ElementInternals.role` | …
Read the whole file at its exact version.
How to install
mdr add community-access/accessibility-agents/web-component-specialist@sha256:63e3f471532db5ffThe line at the top of this page pins the label git:20260922.cd88753, 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_z2m5a2s4tzypn75g)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 22, 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 (1867 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
community-access/accessibility-agents · 436 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_z2m5a2s4tzypn75g GET https://markdownregistry.com/api/v1/resolve?ref=community-access/accessibility-agents/web-component-specialist GET https://markdownregistry.com/api/v1/blob/63e3f471532db5ff6fb40f22dd7a532e2eb1471dfd8afe24f54444eed9808b43
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.