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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered. The description adds one useful behavioral note – the data is 'detected by RivalSweeper', implying detection-based coverage that may be incomplete – but says nothing about return format or whether a brand with no detected stack returns empty.

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 tight sentence with zero waste, and the resource is front-loaded. It is grammatically a noun fragment rather than a full statement, which slightly weakens the framing but not the efficiency.

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 carries some burden for return values; it conveys the content (services per brand) but not the shape (e.g. per-domain grouping). It is adequate for a simple one-optional-param lookup but leaves the agent guessing at output structure.

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 100%: the single 'domains' parameter is fully documented in the schema, including the 'Omit for all your tracked brands' default behavior. The description adds no parameter-level meaning beyond this, so the baseline of 3 applies.

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?

Names a specific resource – the software services/technologies each brand runs, with example categories (analytics, marketing, payments, reviews, search). An agent can tell this apart from siblings like get_homepage_analysis or get_social_media_channels_and_followers. It does not explicitly name a sibling it is distinct from, 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?

The description states what data is returned but never says when to reach for this tool versus alternatives, nor any prerequisite (e.g. needing tracked brands). No when/when-not guidance is present.

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