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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds two genuinely useful behavioral facts beyond the annotations: results are ordered newest first, and the platform/environment values are 'captured pairs'. However, nothing is said about result volume, truncation, or pagination for a listing tool.

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?

Two compact sentences with the ordering and scope front-loaded, no filler. The final clause 'never combine different versions' is terse to the point of ambiguity, which costs some clarity even though nothing is wasted lengthwise.

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?

An output schema exists, so return-value structure need not be described, and the schema fully documents the three parameters. What remains thin is guidance on filter interactions and the meaning of the version-combination warning, but for a read-only listing tool with rich schema and annotations this is close to sufficient.

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 description coverage is 100%, so the schema already carries full parameter meaning (product key format, platform IDs from list_platforms, environment selection rules). The description only echoes that platform/environment filtering is optional, adding no syntax or constraint detail beyond the schema, so the baseline 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 a specific verb (List) and resource (versions) plus the ordering (newest first) and the shape of each item (captured platform/environment pairs). It clearly differs from get_version_metadata or list_version_files, though it never names a sibling to sharpen the distinction.

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 notes that platform and environment filtering are optional, which implies the main usage path, but it gives no explicit when-to-use guidance or direction toward alternatives such as list_version_files or get_version_metadata. The trailing clause 'never combine different versions' gestures at a constraint without stating the condition that triggers it.

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