get_stats

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

With no annotations, the description carries the full burden for behavioral disclosure. It only lists the types of statistics shown but does not reveal whether the tool is read-only, requires authentication, has performance implications, or causes side effects. For a retrieval tool, this is minimal transparency.

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 concise (two lines plus a bullet list) and front-loaded with the core purpose. Every sentence serves a purpose, though the bullet list could be formatted more cleanly. Overall, it is efficient and to the point.

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 description covers the types of statistics returned, which is helpful given the output schema exists. However, it lacks usage guidance and behavioral context. Considering the tool's moderate complexity (no parameters, extensive output) and absence of annotations, the description is adequate but not comprehensive.

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 has zero parameters, so schema description coverage is 100%. The description does not need to add parameter information; it implicitly confirms that no arguments are required. This is appropriate given the schema, earning a baseline score of 4.

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's purpose with a specific verb ('Get') and resource ('comprehensive session statistics'). It lists what statistics are included (token savings, duplicate detection, etc.), making the function clear. However, it does not differentiate from sibling tools like 'entroly_dashboard' or 'checkpoint_state' which might also provide statistics.

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?

No guidance is provided on when to use this tool versus alternatives. There is no mention of prerequisites, when not to use it, or how it fits with sibling tools. The agent must infer usage context from the description alone, which is insufficient for informed selection.

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