Page Tree

What it does

When your agent uses it

• Tasks that involve Browser testing

Example prompts

• “/page-tree”

Requirements

• Node.js
• Compatibility (from SKILL.md): Requires playwright-cli on PATH. Run `playwright-cli --help` for usage.

Workflow steps

3 steps, taken from the step headings in SKILL.md.

1. 1Resolve the bundle
2. 2Inject and capture
3. 3Present outputs

What it can do on your machine

Read from SKILL.md and the folder at commit cbc9952. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/ (JavaScript), which the agent can run.

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Requires playwright-cli on PATH. Run `playwright-cli --help` for usage.

  From compatibility in the SKILL.md frontmatter.

Context cost

Page Tree loads about 1.2k tokens when it runs. Until then it costs about 189 tokens; SKILL.md has 422 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~189

When it runs · the whole SKILL.md, loaded when a task matches

~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from adobe/skills at commit cbc9952, republished under its Apache-2.0 licence (© adobe). 422 words, ~1,221 tokens.

name

page-tree

description

Capture a spatial hierarchy of rendered DOM elements from any webpage. Injects a pre-built script via playwright-cli that walks the DOM, detects layout grids, extracts backgrounds, prunes invisible nodes, promotes elements rendered outside their DOM parent (overlays, fixed navs, modals), and tags overlay nodes with occlusion metadata. Returns three outputs: LLM-friendly indented text, structured JSON tree, and a nodeMap mapping positional IDs to CSS selectors with background and overlay data. Use before page decomposition, overlay detection, brand extraction, or any workflow that needs structured page analysis. Triggers on: visual tree, capture tree, page structure, page hierarchy, DOM tree, capture visual, page analysis, extract tree.

compatibility

Requires playwright-cli on PATH. Run `playwright-cli --help` for usage.

license

Apache-2.0

if [[ -n "${CLAUDE_SKILL_DIR:-}" ]]; then
  VT_BUNDLE="${CLAUDE_SKILL_DIR}/scripts/page-tree-bundle.js"
else
  VT_BUNDLE="$(find ~/.claude \
    -path "*/page-tree/scripts/page-tree-bundle.js" \
    -type f 2>/dev/null | head -1)"
fi

URL="<target URL>"
MINWIDTH=900  # or caller-specified value

# Build config with initScript — injects bundle before navigation
VT_CONFIG="/tmp/vt-config-$$.json"
echo "{\"browser\":{\"initScript\":[\"$VT_BUNDLE\"]}}" > "$VT_CONFIG"

# Open page (or use existing session) — bundle creates window.__visualTree
playwright-cli --config="$VT_CONFIG" open "$URL"
sleep 2

# Capture — pure expression, no IIFE
VT_RESULT=$(playwright-cli eval \
  "JSON.stringify(window.__visualTree.captureVisualTree($MINWIDTH))")

rm -f "$VT_CONFIG"

r @0,0 1440x5667
  rc1 [3x1] @0,0 1440x83 "Header text..."
  rc2 @0,83 1440x5216
    rc2c1 [bg:image] @0,83 1440x410 "Hero text..."
    ...

© adobe, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (scripts) in plugins/web/skills/page-tree of adobe/skills.

• SKILL.md
• .releaserc.json
• evals/evals.json
• package.json
• scripts/page-tree-bundle.js

Open the folder on GitHubat commit cbc9952