working-with-shadow-dom
Works with open and closed shadow DOM using cdp MCP tools, JavaScript, and viewport coordinate input.
Skill by tmc
Chalk Labs
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Install
Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.
npx agentmarket install skill/tmc-working-with-shadow-dom
Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.
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About
Use cases: agent-building
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Permissions
What this skill can do and what it asks for, from its SKILL.md and code. Checked Nov 1, 2026.
- Tools
- No tools found
- Secrets
- None asked for
- Install scripts
- None found
Network hosts it talks to 1
codeload.github.com· found in install command
Files it touches
~/.claude/skills/working-with-shadow-dom
What's inside
- Skill name
working-with-shadow-dom- Description
- Works with open and closed shadow DOM using cdp MCP tools, JavaScript, and viewport coordinate input. Use when an element is visible but selectors, accessibility refs, or page snapshots do not expose the actual control.
- License
- MIT
- Instructions
- 26 lines in SKILL.md · view on GitHub
Files (2)
- SKILL.md
- shadow-dom.md · references/
SKILL.md (first lines)
# Working With Shadow DOM Use this skill when page state or interaction depends on a web component or shadow root. ## Quick start - Use screenshots first to confirm the target is visible. - For open shadow roots, use `evaluate` to inspect through `element.shadowRoot`. - For closed shadow roots, use `click coord:x,y` or other viewport-coordinate input; JavaScript selectors cannot traverse the closed root. - After coordinate input, verify with another screenshot or visible page state. ## Use this skill for - visible controls hidden behind web components - custom elements whose inner DOM is not in `page_snapshot` - deciding between JavaScript inspection and compositor-level coordinate input ## Read next - Tool details and limits: [references/shadow-dom.md](references/shadow-dom.md) - Iframe and compositor notes: [../working-with-iframes/SKILL.md](../working-with-iframes/SKILL.md) - General live loop: [../operating-cdp-cli/SKILL.md](../operating-cdp-cli/SKILL.md)
From tmc/cdp, MIT.
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Signals
- Stars
- 5
- Forks
- 1
- Open issues
- 0
- Last commit (this folder)
- Sep 22, 2026 (1 month ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- MIT
- Repository
- github.com/tmc/cdp
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
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uploading-files
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Uploads local files into browser file inputs through the cdp MCP server.
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capturing-page-artifacts
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Cite this page
working-with-shadow-dom skill. Agent Mart. https://agentmart.dev/skills/tmc-working-with-shadow-dom (last updated 2026-10-24)