✓ SAFE: Close DB connection; file unchanged.

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

No annotations are provided, so the description must disclose all behavioral traits. It only states 'file unchanged,' which is a minor safety note, but fails to mention whether the operation is idempotent, what happens to uncommitted transactions, or if it can be called multiple times. Minimal disclosure.

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 concise sentence, but it repeats the title without adding structure or details. It is not verbose, but it doesn't earn its place because it provides no new information.

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 is simple, but the description gives no information about return values, side effects, or when to use it. Without annotations or output schema, the description is insufficient for an agent to understand the full behavior.

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 schema has a single optional parameter (database_name) with no documentation in the description. Since schema description coverage is 0%, the description must explain the parameter, but it is entirely omitted, leaving the agent clueless about its purpose.

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?

The description provides no guidance on when to use this tool versus alternatives, nor any conditions under which it should be ignored. It lacks any mention of prerequisites (e.g., committing transactions) or exclusions like not closing if there are active statements.

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