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

Annotations already convey read-only, idempotent, and non-destructive behavior, so the description does not need to repeat safety info. It adds ordering ('newest first') and filtering semantics ('optionally filter by kind'), but does not disclose other behavioral details such as pagination, result shape, or limits beyond the schema.

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, front-loaded sentence that efficiently conveys the tool's purpose, content, ordering, and optional filtering. Every word earns its place with no filler or repetition.

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 list tool with two optional parameters, no output schema, and strong annotations, the description adequately covers what is listed and how it is ordered. It is slightly vague on 'recent' but overall sufficient; no critical gaps that would prevent correct invocation.

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 provides full descriptions for both parameters (kind and limit), covering 100% of the schema. The description's mention of 'filter by kind' is redundant with the schema, and it adds no additional parameter-level detail or usage nuance beyond what schema descriptions already provide.

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 clearly states the tool lists recent detected changes for tracked tools, enumerating specific change kinds (pricing, reachability, free-tier, deprecation) and ordering (newest first). This clearly distinguishes it from siblings like get_tool, search_tools, and compare_tools.

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 use when the user wants to see recent changes to tracked tools, but it does not explicitly address when to prefer this tool over alternatives or mention any exclusions. No comparison to sibling tools is provided, so guidance is limited to implicit context.

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