get_file_info

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

With no annotations, the description must disclose behavioral traits, but 'Stat a file' reveals nothing about return format, error handling, or whether the operation is read-only. The agent has zero insight into side effects or failure modes.

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?

While the description is extremely short, this is under-specification rather than conciseness. Two words cannot earn their place when the tool clearly requires more context to be safely invoked.

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 tool with a single parameter, no annotations, and no output schema, the description is wholly inadequate. It fails to explain what 'stat' produces, how the path is resolved, or any behavior. The agent would be operating blind.

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 only parameter 'path' has no schema description and schema coverage is 0%. The description does not explain what kind of path is expected (absolute, relative, file-only), nor does it add any meaning beyond the parameter name.

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 'Stat a file' is a terse, technical verb+resource. It conveys that the tool retrieves file metadata, but 'stat' is Unix jargon and may be unclear to some agents. It does not differentiate from siblings like read_file, which also accesses file data.

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 on when to use this tool versus alternatives. No context is provided about typical use cases, prerequisites, or exclusions, leaving the agent to guess.

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