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

The annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false, covering the safety profile. The description adds the recency-based ordering behavior, but it does not disclose output format, pagination behavior, or how the limit parameter affects results beyond what the schema states.

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, clear, front-loaded sentence with no wasted words. It could potentially mention distinctions from sibling tools or return behavior, but for such a simple operation, the brevity is reasonable.

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 tool with one optional parameter, the description is minimally sufficient. However, given the large sibling set and no output schema, it lacks guidance on how to choose it over related deal-listing tools and what response shape to expect.

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?

The input schema fully describes the only parameter, limit, including default and maximum values. The description does not add parameter-specific meaning, but it does not need to because schema coverage is 100%.

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 ('Get') and a clearly scoped resource ('deals') with a qualifier ('most recently added') that distinguishes this tool from siblings like get_best_deals or get_trending_deals. It is not a tautology and immediately communicates the core behavior.

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?

There is no explicit guidance about when to use this tool versus alternatives such as search_deals, get_trending_deals, or get_deals_by_category. The word 'latest' implies recency is the criterion, but no context or exclusions are provided, so an agent must infer the intended use.

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