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softallice

@nxavis/agent-browser-mcp

by softallice

browser_get_html

Retrieve HTML content from an element or whole page. Use selectors for targeted extraction and debugging web pages.

Instructions

Get HTML content from an element or the entire page

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
outerNoGet outer HTML instead of inner HTML
selectorNoSelector for the element (gets full page HTML if not provided)
sessionIdNoBrowser session ID
Behavior3/5

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

With no annotations, the description carries full burden. It adds scoping behavior (element or page) but does not disclose potential limitations such as behavior with invalid selectors or whether the operation is purely local. It is adequate for a simple read tool but not rich.

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, front-loaded sentence with no filler. Every word contributes to understanding the tool's function.

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?

For a simple getter with fully described parameters, the description adequately covers the core functionality. The lack of an output schema is mitigated by the straightforward 'HTML content' outcome, though it could mention return format nuances.

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?

Schema description coverage is 100% for all three parameters, so the baseline of 3 applies. The description adds no additional parameter semantics beyond what the schema already provides.

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 gets HTML content, specifying both element and full-page scope. This distinguishes it from sibling getters like browser_get_text and browser_get_attribute.

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

Usage Guidelines3/5

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

It implies usage context (element vs entire page) but provides no explicit guidance on when to choose this over other getters like browser_get_text or browser_get_url. There are no exclusions or alternatives mentioned.

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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