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

No annotations are provided, so the description carries the burden of behavioral disclosure. It states the tool returns statistics and mentions the v0.4.0 feature context, which adds some behavioral context. However, it does not disclose whether the operation is read-only, whether it requires authentication, or what happens with the optional user_uuid parameter (e.g., filtering behavior).

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 short and front-loaded with the core purpose. The version note and return summary are useful and do not add excessive length. It could be slightly more structured, but it is appropriately sized for a simple statistics tool.

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 has a simple input schema (one optional parameter) and an output schema exists, so the description does not need to explain return values in detail. However, the meaning of user_uuid is left unexplained, and there is no guidance on how the statistics relate to the sibling tools. For a simple read-only statistics tool, this is adequate but has clear gaps.

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%, and the description does not explain the meaning or effect of the user_uuid parameter. The description mentions statistics by agent, phase, and type, but does not clarify whether user_uuid filters those statistics or is used for something else. With only one optional parameter and no schema description, the description should have compensated but did not.

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 states a specific verb ('Get') and resource ('statistics about the template registry'), and mentions the statistics include counts by agent, phase, and type. It is clear enough to distinguish from sibling tools like get_prompt_template or list_prompt_templates, though it does not explicitly name a sibling for differentiation.

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 this tool is for retrieving aggregate statistics rather than individual templates, which provides some context for when to use it. However, it does not explicitly state when to use this tool versus alternatives like list_prompt_templates or get_prompt_template, nor does it mention any exclusions or prerequisites.

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