Reconcile DOM, accessibility semantics, geometry, screenshots, focus, state, timing, and capability checks before allowing browser-agent actions.
Reliable browser automation combines semantic role and accessible-name targeting with live DOM attachment, accessibility state, geometric hit testing, viewport visibility, timing, and explicit confirmation for consequential actions.
The submitted report remains byte-identical. This separate review, checked 2026-08-26, narrows implementation claims and gives visitors a decision path before they generalize from a local result.
Output produced deterministically by the local runtime.
Useful model or subset that must not be mistaken for full conformance.
Conclusion that needs an exact implementation, trust system, model, parser, or human review.
| Question | What the local page can answer | What it does not establish | Next evidence step |
|---|---|---|---|
| What semantic role and name should identify the fixture control? | The deterministic fixture provides an expected locator. | Live target stability or cross-browser equivalence. | Capture the actual target's DOM and accessibility tree. |
| Can the control be clicked safely? | The fixture explains geometry and confirmation factors. | Current overlap, animation, enabled state, or consequence. | Run actionability and policy checks immediately before action. |
| Is the interface agent-safe? | No global verdict is issued. | Prompt injection, privilege, session, or side-effect containment. | Threat-model the full browser-agent stack. |
Compares semantics, geometry, focus, and capability decisions.
Expected boundary: Each fixture exposes at least one reason that a single representation is insufficient.
Open prepared laboratoryNo single view is automatically authoritative. Preserve the source, identify each parser or receiver, and compare their outputs before authorizing a consequential decision.
Current nodes, attributes, attachment, and mutation state.
Roles, names, descriptions, states, and properties.
Bounding boxes, viewport position, overlap, and hit-test target.
The rasterized human-visible representation.
Current focus, tab order, active dialog, and inert background.
The browser profile, cookies, tools, and allowed side effects.
The workflow preserves evidence before transformation and keeps structural inspection separate from execution, remote verification, or model behavior.
These controls are contextual. They reduce a defined risk; they do not guarantee safety, truth, attribution, or resistance to every adaptive attack.
Use native semantics and names that match visible purpose.
Avoid hidden or off-screen focusable controls.
Keep untrusted page content separated from agent policy and tools.
Use isolated ephemeral browser contexts for untrusted tasks.
Disable arbitrary script execution and unrestricted file or network tools.
Definitions are linked into the site-wide glossary and back to the full report.
The W3C remote-control interface for browsers.
A browser instrumentation protocol exposing domains such as DOM, Page, Network, and Accessibility.
A query strategy that identifies an interface object for repeated live evaluation.
Determining which rendered object receives an input at a coordinate.
A prior node reference that no longer identifies an attached live element.
A native or correctly mapped widget exposing purpose and state to accessibility APIs.
A serialized accessibility-tree representation used for testing or agent observation.
A pre-action verification of attachment, visibility, stability, enabled state, and event reception.
These links are provided for visitors who want the governing specification, paper, framework, or implementation documentation. Links open in a new tab; the site does not fetch them during runtime analysis.
Cross-browser remote-control standard.
Normative or first-party specification material.Roles, states, and properties.
Normative or first-party specification material.Platform accessibility mappings.
Normative or first-party specification material.Accessible-name and description computation.
Normative or first-party specification material.Chromium instrumentation domains.
Tool, vendor, or implementation documentation; behavior is version-specific.Accessibility-tree types and commands.
Tool, vendor, or implementation documentation; behavior is version-specific.Tool-specific accessibility testing guidance.
Tool, vendor, or implementation documentation; behavior is version-specific.Serialized semantic snapshot testing.
Tool, vendor, or implementation documentation; behavior is version-specific.Browser automation exposed through an agent tool protocol.
Tool, vendor, or implementation documentation; behavior is version-specific.The full submitted report is preserved byte-for-byte in the governed research library and in durable repository documentation. The laboratory turns selected concepts into deterministic local output without external calls or hidden persistence.
A detailed treatment of WebDriver, CDP, live DOM state, accessibility mappings, accessible names, geometry, screenshots, locators, timing, dialogs, prompt injection, capability safeguards, and semantic testing.
Read governed reportCompare deterministic fixture DOM, accessibility snapshot, focus order, geometry, hidden state, locator strategy, and confirmation requirements without external navigation or real side effects.
Open bounded laboratory