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

With no annotations, the description carries the full behavioral burden and it only covers the output contents. It says nothing about network behavior: redirects, timeouts, rate limits, robots.txt/paywall handling, or what happens when a page fails to load or yields no JSON-LD.

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?

One front-loaded sentence listing the payload components with zero filler. Efficient, though the density leaves no room for the operational caveats the tool actually needs.

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?

The enumeration of returned fields usefully substitutes for the missing output schema, which is a real strength. But for a zero-annotation network tool with an undocumented second parameter, the definition omits failure modes and the truncation control, leaving gaps an agent will hit in practice.

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 description coverage is 0%, so the description must compensate, but it never mentions either parameter. In particular 'max_text' — which clearly caps the 'clean text' field — is left entirely unexplained, so an agent must guess its meaning and units.

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 and resource ('Fetch a web page') plus the exact shape of the return value (meta, Open Graph, JSON-LD, headings, links, images, clean text). That cleanly separates it from siblings like site_audit, page_diff, and sitemap_urls, though the description never names those alternatives explicitly.

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?

The purpose implies when to use it (you need structured data from a single page), but there is no explicit 'use this instead of page_diff / site_audit' routing and no prerequisites (public vs authenticated pages, JS-rendered content) discussed.

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