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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, covering the safety profile. The description adds minimal behavioral context (the 'all' intersection semantics) but does not disclose output format, pagination, or other runtime behavior. This is acceptable given the strong annotations, but no extra depth is provided.

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?

The description is a single, direct sentence with no filler or redundancy. It front-loads the action and clearly states the tool's purpose.

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 tool is simple and the annotations are rich, but the lack of an output schema and minimal parameter explanation leave the agent guessing about return shape and limit semantics. The description covers the core function but is not fully complete given the 0% parameter coverage and no output schema.

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 explain parameter meanings. It does not; 'domains' and 'limit' are only named with type constraints. The required array constraints (minItems 2, maxItems 5) are in the schema, but the semantic of 'limit' (e.g., maximum number of results) is not explained anywhere. The description fails to compensate for the lack of schema descriptions.

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 uses a specific verb ('find') and resource ('domains linking to all queried domains'), clearly distinguishing this as an intersection/link overlap tool. It conveys the exact function without ambiguity.

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 implies a clear use case (finding domains that link to every queried domain) but does not mention when to use this tool versus alternatives like get_link_intersect or get_competitor_gap. No exclusions or alternative tools are referenced, so guidance is only implicit.

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