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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds the endpoint (GET /clients/systemlinks) and enumerates the returned attributes, but says nothing about permissions, rate limits or result size beyond the fields parameter.

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?

A single compact sentence that front-loads the resource and its returned attributes, plus the endpoint as a trailing detail. Slightly fragment-like grammar, but no wasted content.

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 simple read-only list tool with full annotation coverage and complete parameter documentation, the description supplies the essentials: what the items are, what attributes come back, and that they are directly linkable. Nothing critical is missing.

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?

There is one optional parameter with 100% schema description coverage, so the schema already explains the field-filtering behavior and its API-size tradeoff. The description adds nothing further about it, 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?

The description names a specific resource — the account site's system pages — and gives concrete examples (search, featured, contact) plus the returned fields (name, id, URL). That is enough to tell it apart from data-listing siblings like idx_list_saved_links or idx_list_featured_listings, though no sibling is named 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 phrase 'which can be linked to directly' hints at the use case (building navigation/deep links to built-in pages), but there is no explicit when-to-use or when-not guidance and no alternative tool is mentioned.

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