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List all interactive elements (links, buttons, inputs, ARIA controls) on the current page with stable CSS selectors and viewport status. Detects modal dialogs blocking the page. Use before clicking to identify reliable selectors.

Instructions

List all interactive elements (links, buttons, inputs, ARIA controls) on the current page with CSS selectors, visible text or value for inputs, and viewport status — use before browser_click to discover stable selectors, and prefer this over screenshot when verifying button/toggle state after submission (no image tokens, structured output). scope limits to a CSS subsection (e.g. '.sidebar'). Returns state (checked/pressed/selected/expanded) for ARIA custom controls. Also returns a modal: section — whether a true modal dialog is blocking the page (isModal + blocker {name, role} + the signals it was judged on); it is ALWAYS present (isModal:false when no modal), and a navigation drawer is NOT reported as a modal (only an aria-modal / alertdialog / native showModal dialog, or a backdrop-backed dialog that locks the page, is treated as modal). Caveats: Selectors are CDP-generated snapshots — re-call after page navigates or re-renders. Input text reflects the empty-field hint text when defined (takes priority over typed value) — use browser_eval('document.querySelector(sel).value') to read actual typed content. Typed errors: code:'BrowserNotConnected' (CDP not attached — call browser_open or browser_open({launch:{}})). Note: a non-matching scope CSS selector silently falls back to the full document (does not raise an error) — verify the selector via browser_eval if scoped enumeration is required.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
portNoChrome/Edge CDP remote debugging port.
scopeNoCSS selector to limit the search scope (e.g. '.s-main-slot', '#nav-search-form'). Omit to scan the full page.
tabIdNoTab ID from browser_open. Omit to use the first page tab.
typesNoElement types to include. Default 'all' returns links, buttons, and inputs.
includeNoOptional response-shape opt-in. `['envelope']` returns the self-documenting envelope (`_version` / `data` / `as_of` / `confidence`). `['raw']` forces raw shape (overrides DESKTOP_TOUCH_ENVELOPE=1 server default). Default behaviour is raw shape (compat with existing clients).
maxResultsNoMaximum number of elements to return (default 50).
inViewportOnlyNoWhen true, only return elements currently visible in the viewport.
includeContextNoWhen true, append activeTab and readyState context to the response.
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description fully carries the burden of disclosure. It details that selectors are CDP snapshots, input text reflects hint priority, non-matching scope silently falls back, modal detection logic, and error conditions like BrowserNotConnected.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is long but each sentence adds value. It is front-loaded with main purpose and usage, followed by detailed sections on modal and caveats. Slightly verbose on modal detection but necessary for clarity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 8 parameters, no output schema, and complex behavior, the description covers return elements, modal detection, caveats, and error handling. It could explicitly list all output fields but the modal section is well specified.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description adds value by explaining scope usage and the purpose of the modal section, but most parameter details are already in the schema. Extra context like 'scope silently falls back' provides beyond-schema understanding.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states the tool lists interactive elements on the page, differentiates from siblings like browser_click and screenshot by specifying use cases ('use before browser_click', 'prefer over screenshot when verifying button/toggle state').

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly recommends usage before browser_click and over screenshot for state verification. Mentions scope for subsection filtering and caveats like re-call after navigation. Alternative tools are implicitly given.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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