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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so the safety profile is fully covered. The description's note that changes are previewed and human-confirmed describes the subject matter being documented rather than the tool's own behavior, and it adds nothing about retrieval, caching, or response characteristics.

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?

A single compact sentence that front-loads the subject (Cardi) and enumerates the three content areas. Slightly fragmentary phrasing ('her limits' is vague about what kind of limits), but nothing is wasted.

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?

With no parameters, full annotations, and an output schema that carries the return structure, the description only needs to convey topical scope — which it does. The main omission is sibling differentiation, and 'limits' could be sharpened to permissions/scope boundaries.

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 tool takes zero parameters with 100% schema description coverage, so there is no parameter semantics to explain. Baseline 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?

The description makes clear this is a documentation-style resource covering what Cardi can read and change, the preview/confirm flow, and her limits. The verb is implied rather than stated (no 'returns'/'describes'), and it does nothing to separate itself from the nearby get_capabilities, which an agent could easily mistake for the same content.

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, when-not-to-use, or alternative named. The only cue is topical — read this if you care about Cardi's permissions — leaving the agent to guess how it differs from get_capabilities or get_overview.

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