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

No annotations are provided, so the description carries the burden. It does add a genuinely useful behavioral fact beyond the schema — the $0.005 per-call price — plus the enforced absolute-URL output normalization. However, it says nothing about authentication, rendering/timeout behavior, or the shape of the returned collection for a 21-parameter scraping tool.

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?

Two short sentences, zero filler, with the core capability and its filters front-loaded before the cost note. Every clause carries information.

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?

For a 21-parameter browser-rendering tool with no annotations and no output schema, the description is thin: it omits what the returned link data looks like (array of strings vs. objects), how rendering/interaction options affect results, and any authentication or cost-caveat guidance beyond price.

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 only 19% across 21 parameters. The description restates the two documented filters (excludeExternalLinks, visibleLinksOnly) in natural language but leaves the other 19 parameters (cookies, viewport, authenticate, gotoOptions, waitForSelector, etc.) unexplained anywhere beyond bare names. With low coverage the description should compensate, and it does not.

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 concrete verb+resource: it returns every link on a page as absolute URLs, which cleanly distinguishes it from the rendering-oriented siblings (markdown, pdf, screenshot, snapshot). It does not explicitly name those siblings or contrast outputs, so it stops short of a 5.

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?

Mentions the two available filters (same-domain-only, visible-only), which implies the typical filtering use cases, but never says when to pick this tool over snapshot/markdown or what prerequisites (JS rendering, auth) are needed. Usage is implied rather than stated.

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