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

The description adds behavioral context by detailing exactly what the return value contains (MCPs, status, accounts, tool counts), which is valuable given the absence of an output schema. The annotations already declare readOnlyHint=true and idempotentHint=true, and the description aligns with these without contradiction.

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, well-structured sentence that front-loads the action ('Returns the current toolkit state') and then lists the key components without any fluff or 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?

With no output schema, the description must convey what the user receives, and it does by listing major return elements. It is reasonably complete for a simple info tool, though it could mention formatting or detail level if relevant, but that's not critical here.

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 input schema provides no semantic burden. The baseline of 4 applies because the description doesn't need to explain parameters, and it correctly focuses on the output instead.

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 the specific verb 'Returns' and clearly identifies the resource as 'current toolkit state', enumerating concrete elements (installed MCPs, connection status, accounts, catalog tool counts). This distinguishes it from sibling tools that perform specific operations like authenticate or list accounts.

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 does not provide explicit guidance on when to use this tool versus alternatives, nor does it mention any exclusions or prerequisites. While it's inherently an overview tool, the lack of any usage direction makes it a clear gap.

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