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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, and the description is consistent with those traits, merely promising to return information. It adds useful context about what is returned, but does not disclose any extra behavioral aspects such as data freshness, permissions, or side effects, which is acceptable given the annotation coverage.

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 sentence with clear front-loading, listing the return categories in a compact, readable manner. Every section of the description adds meaningful detail without any filler or unnecessary repetition.

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 parameter-free, read-only tool with strong annotations, this description is enough for an agent to understand exactly what information will be available. It enumerates the main dimensions of the returned state and does not need an output schema to clarify behavior or result shape.

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?

This tool has zero parameters, so the input schema already provides complete parameter coverage and the description does not need to add parameter-level explanations. The description instead focuses on the return content, which fits the parameter-independent nature of this tool.

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 clearly identifies the resource as 'the current toolkit state', enumerating installed MCPs, connection status, accounts, and catalog tool counts. This scope fully distinguishes it from action-oriented siblings like authenticate/connect and from version-focused tools like 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 intended usage is implied: an agent would call this when it needs to inspect the current toolkit state, such as before or after authentication/connection steps. However, the description does not explicitly state when to use it versus alternatives or mention any prerequisites/exclusions, so guidance remains implicit rather than explicit.

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