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

Annotations already declare readOnly, idempotent, non-destructive, closed-world behavior, so the safety profile is covered. The description adds genuine behavioral value with the 'newest first' ordering, but says nothing about pagination, result size, or what a version record contains.

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?

One compact sentence with zero boilerplate, and the ordering detail is front-loaded. It is close to minimal, though a few more words on return shape would have earned their place.

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?

There is no output schema, so the description must carry some of the return-value burden; 'every version of a file, newest first' hints at the list and its ordering but not at fields, pagination, or limits. Adequate for such a simple one-parameter read tool, but with 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 coverage is 100% and the single fileId parameter is fully documented in the schema, including where to obtain it (files_upload or files_list). The description adds no further meaning beyond that, so the baseline of 3 applies.

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?

States the resource (every version of a file) and the ordering (newest first), which distinguishes it from files_get (single file) and files_new_version (creates a version). It lacks an explicit verb like 'list', but the fragment is unambiguous.

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 gives no when-to-use guidance, no prerequisites, and names no alternative. An agent must infer from the name alone that this is the history-inspection tool rather than files_get or files_new_version.

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