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hy-2005
by hy-2005

browser_snapshot

Get a structured snapshot of the page's accessibility tree, formatted for LLM consumption. This enables automated inspection and understanding of page state.

Instructions

获取页面可访问性快照(结构化,适合 LLM 阅读)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
_agent_idNo隔离键:同一 agent 的所有调用传相同的值以保持其浏览器;不同 agent 传不同的值以获取独立浏览器。省略则共享默认浏览器。
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states the snapshot is structured and LLM-friendly, without covering potential side effects, permissions, or the exact return format.

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

Conciseness5/5

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

The description is a single, concise sentence that immediately conveys the tool's purpose and output nature. It is front-loaded and contains no filler.

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

Completeness2/5

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

For a tool with no annotations and no output schema, the description is too minimal. It does not explain what 'accessibility snapshot' precisely includes, when it should be used, or any behavioral details, leaving the agent under-informed.

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

Parameters3/5

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

The schema already provides 100% coverage for the single optional _agent_id parameter, so the baseline is 3. The description adds no additional semantic detail beyond what the schema documents.

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?

The description clearly states the tool retrieves a page accessibility snapshot and emphasizes it is structured and suitable for LLM reading. This distinguishes it from sibling tools like screenshots or console messages.

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

Usage Guidelines2/5

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

The description provides no explicit guidance on when to use this tool versus alternatives like browser_take_screenshot or browser_console_messages. It lacks any when-to-use or exclusion criteria.

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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