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SKILL verified MIT Self-run

Verify Page Loaded

skill-bettyguo-browser-skills-verify-page-loaded · by bettyguo

Confirms that the current page has finished loading and is ready for interaction. Detects loading spinners, skeleton screens, and content placeholders. Run before extraction skills.

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Install

$ agentstack add skill-bettyguo-browser-skills-verify-page-loaded

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

✓ Security review passed
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● 2mo ago

Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

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About

Verify Page Loaded

When to invoke

After any navigation, and after any interaction that may have triggered new content (clicking pagination, expanding a section, submitting a form). Especially important before extraction skills — extracting from a half-rendered DOM produces incomplete results.

This skill is vision-forbidden (max_vision_calls: 0). If the deterministic checks fail, the skill returns failed and the agent knows the page is genuinely not ready — vision wouldn't help.

Recipe

  1. waitfordom_ready timeout=10s
  2. waitforselector selector="body" state=visible timeout=2s
  3. wait extra=200ms
  4. assert novisibleelement selector="[aria-busy='true']" timeout=3s
  5. assert novisibleelement selector=".loading, .spinner, [class*='skeleton']" timeout=3s

Success criteria

  • assert dom_ready
  • assert novisibleelement selector="[aria-busy='true']"
  • assert maincontentpresent

The main_content_present assertion checks for one of: `, [role=main], `, or a body height > 200px (heuristic for "something rendered").

When NOT to use

  • On pages that legitimately stay in a loading state (live dashboards, video-call interfaces, etc.). Use a custom skill or rely on agent reasoning.
  • Inside an extraction loop where the page is the same as before; this skill assumes a fresh state.

Known failures

  • Single-page apps with no DOMContentLoaded signal change: rare but happens with React/Vue apps that use shadow DOM heavily. Falls back to the spinner-absence check.
  • Pages with always-present skeleton-style classes: some design systems use .skeleton for normal layout elements, not loading. Authors can override the recipe to remove step 5.
  • Sites that block until consent is given: if a cookie banner is also blocking, run [dismiss-cookie-banner](../dismiss-cookie-banner/SKILL.md) first.

Example usage

Agent task: "Get the latest cs.AI papers from arxiv."
→ matcher selects [verify-page-loaded, extract-table-pagination]
→ invoke_skill("verify-page-loaded") → success in 89ms, deterministic_path=true
→ invoke_skill("extract-table-pagination") proceeds against a fully-rendered page

Related skills

  • dismiss-cookie-banner — usually precedes this skill
  • extract-table-pagination — usually follows this skill
  • handle-infinite-scroll — uses similar primitives but with a different success criterion

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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