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

The annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety and read-only nature are covered. The description adds domain context but no additional behavioral details such as authorization, pagination, or response behavior beyond what annotations already provide.

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 two short, front-loaded sentences with no redundant restatement of the tool name. The second sentence adds selection context, though it is slightly less essential than the first.

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 parameter coverage and an output schema, the description is mostly complete. It explains purpose and scope, though it could be slightly stronger by clarifying pagination or contrasting with gifts.get.

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%, so both parameters are already documented in the input schema. The description adds the useful scoping idea of 'overall or for one contact,' which maps loosely to contact_id, but does not add syntax or format details beyond the schema.

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 makes clear that this is a list-type tool for gifts, covering both overall gift ideas and gift history for a contact. It distinguishes scope from a single-gift tool like gifts.get implicitly, but does not name or contrast with any sibling tool 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?

It states a clear usage context: when the user wants to see gift ideas or gift history, especially before birthdays and holidays. It does not provide exclusions or name alternative tools, but the when-to-use condition is explicit.

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