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

The description says 'Read-only', which directly contradicts the annotation destructiveHint=true (even though readOnlyHint=true matches). Per the contradiction rule, this scores 1. The added detection details about what is compared are useful, but the contradiction makes the behavioral profile unreliable.

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

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

Three tight sentences: purpose, detection list, and usage rationale. The most important information is front-loaded, and every clause earns its place with no filler.

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

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

With no output schema, the description should ideally explain what the diff result looks like (e.g., list of differences, severity). It covers purpose and use case but omits return format and error behavior, leaving a gap for an agent interpreting results.

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

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

Schema coverage is 100%, so all four parameters are already documented in the input schema. The description adds no syntax, format, or pairing guidance beyond what the schema provides, making the baseline 3 appropriate.

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

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

States a specific verb ('Structural diff') and resource ('two Elementor pages'), scopes same-site/cross-site, and enumerates detection types (dropped sections, missing headings/FAQ items, changed CTA labels, missing images). This clearly distinguishes it from sibling tools like wp_clone_page or wp_get_page.

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

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

Provides a clear context for use: 'use it to PROVE a clone kept everything the source had' and notes it works same-site or cross-site. It does not name an alternative tool or explicitly state when not to use it, so it stops short of a 5.

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