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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description usefully adds that nothing is stored and describes the return shape ("valid or a list of issues with the path to fix"), which matters because there is no output schema, but it does not disclose issue-list volume, truncation, or how exhaustive the checks are.

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?

Three short sentences, front-loaded with the verb and scope, then the return contract, then the read-only reassurance. "Read-only" mildly duplicates readOnlyHint, but the phrasing bundles it with the genuinely new "nothing is stored" fact, so waste is minimal.

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 one-parameter, closed-world, non-destructive validator with no output schema, the description supplies the validation scope, all accepted input representations, and the return contract. An agent has everything needed to call it correctly and interpret results.

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% and there is only one parameter, so the baseline is 3. The description restates the accepted input forms already documented in the schema's profile description and adds no syntax detail (e.g., how a raw CMP2 code is passed versus JSON text) beyond it.

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 (checks/validates) and resource (ConsoleMouse profile), and enumerates the accepted input shapes — full or derived profile, import envelope, or CMP2/CM1 import code — plus the rule set applied (JSON Schema, format rules, macro limits). It is clear what the tool does, but it never names or contrasts itself with siblings like profile_import_code or profile_describe, leaving overlap around import-code handling unaddressed.

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 explicit when-to-use or when-not-to-use guidance and no mention of alternatives. Validation-before-import is only inferable from context, and nothing tells the agent whether to reach for this versus profile_import_code when an import code is in hand.

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