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

The annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds value by detailing exactly what the read-only snapshot includes (MCPs, statuses, connected accounts, catalog-tool counts), aligning with the annotations without contradicting them.

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?

The description is a single, front-loaded sentence with no filler. Every phrase adds useful information, and the contents of the returned state are listed compactly.

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?

Given that the tool has no parameters and no output schema, the description does enough by laying out the meaningful categories of the returned state: installed MCPs, connection status, connected accounts, and catalog tool counts. No material gap remains.

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 has zero parameters, so the baseline is 4. There is nothing about parameter semantics to explain, and the description appropriately focuses on what the no-input call will produce.

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 uses a specific verb ('Returns') and identifies a precise resource ('current toolkit state'), then enumerates the key contents: installed MCPs, connection status, connected accounts, and catalog tool counts. This clearly distinguishes it from action-oriented siblings like authenticate and connect, and from the narrower show_version.

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 makes the use case inferable — checking the current toolkit state — but it provides no explicit guidance on when to use this tool versus alternatives such as show_version or marketplace. There are no stated exclusions or relationship notes among siblings.

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