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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safe no-side-effect nature is established. The description adds some value by specifying the informational content, but it does not disclose further behavioral details beyond what the annotations already cover; no contradiction exists.

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 that front-loads the core action and then packs in four meaningful pieces of information without waste. Every clause adds value, making the description both concise and well structured.

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 no-parameter, read-only introspection tool, this description is fully adequate. It states precisely what the output will contain, and the rich annotations cover side-effect and idempotency concerns. No output schema is necessary because the textual enumeration is clear enough for the agent.

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 and 100% schema coverage, so there is no parameter semantics to explain. The baseline for a 0-parameter tool is 4, and the description appropriately focuses on return content rather than input semantics.

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 resource ('current toolkit state'), followed by a concrete enumeration of what is included: installed MCPs, connection status, accounts, and catalog tool counts. This clearly distinguishes it from sibling tools like connect or show_version, which address different concerns.

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 implicitly makes it clear to use this tool when one needs an overview of the toolkit's current state and connectivity. It does not explicitly name alternatives or exclusions, but its purpose is distinct enough from siblings like authenticate or report_bug, so the usage context is clear.

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