vault_stats

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It fails completely, disclosing nothing about side effects, return values, permissions, or any other behavioral traits. A tool named 'vault_stats' could return statistics, but this is not stated.

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 extremely concise, but it is under-specified rather than appropriately concise. A single word that repeats the tool name does not earn its place; it provides no informative content. This is analogous to the 'Process' example, which scored 2 for being an under-specification.

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?

Given the complete absence of annotations, output schema, and any descriptive text, the description is entirely inadequate for understanding the tool's functionality, input, or output. Even with no parameters, an agent cannot know what 'vault_stats' does or what it returns, making this far from complete.

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 tool has zero parameters, as indicated by the empty input schema, so there are no parameter meanings to clarify. The baseline for 0 parameters is 4, and the description does not introduce any confusion or contradiction. However, the description also adds no value beyond the schema for this dimension.

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?

Tautological: description restates name/title.

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 guidance whatsoever on when to use this tool versus alternatives. No context about typical use cases, prerequisites, or exclusions is provided. The description offers zero practical help for an agent deciding between this and the sibling tools.

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