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

Annotations already indicate read-only, idempotent, and non-destructive behavior. The description adds value by disclosing the specific state elements returned (installed MCPs, connection status, accounts, catalog counts), which is beyond the annotations. No contradictions. Slight deduction for not mentioning network behavior or response format.

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, information-dense sentence that front-loads the core purpose ('Returns the current toolkit state') and immediately enumerates the key data points. Every word earns its place; no redundancy.

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 read-only informational tool with no parameters and clear annotations, the description provides sufficient context: it lists all expected return categories. It could be more explicit about output format or error behaviors, but such details are not critical given the tool's simplicity and the strong annotations.

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?

With zero parameters and 100% schema coverage, the baseline is 4. The description adds no parameter details, but none are needed since the tool takes no inputs.

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 ('current toolkit state') while enumerating the exact contents (installed MCPs, connection status, accounts, catalog tool counts). It is readily distinguishable from sibling tools like show_version or authenticate, which serve different purposes.

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 implies usage for inspecting state but provides no explicit 'when to use' or alternatives. It doesn't contrast with siblings like show_version, though the detailed return-value list gives strong contextual hints. Missing exclusions or direct alternative references keep it at a minimum-viable level.

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