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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, covering the safety profile. The description adds content about what the return includes, which goes beyond annotations, but it does not disclose any additional behaviors such as performance, caching, or authentication requirements. With annotations covering the main aspects, this is satisfactory but not exceptional.

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 tool's purpose ('Returns the current toolkit state') and then lists the concrete components. Every word adds value, and there is no redundancy or unnecessary detail.

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 there is no output schema, the description carries the full burden of explaining what the tool returns. It does so effectively by listing the key elements: installed MCPs, connection status, connected accounts, and catalog tool counts. This completes the picture for a status tool, especially with the safety annotations already present.

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 no parameters (0 params, schema coverage 100%), so the baseline score is 4 per the rubric. The description need not explain any parameters since there are none. It effectively communicates that the tool takes no input and returns a state summary.

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 clearly states the tool's function: 'Returns the current toolkit state' and enumerates its components (installed MCPs, connection status, accounts, catalog tool counts). This uses a specific verb ('returns') and a resource ('toolkit state'), and distinguishes it from sibling tools like authenticate or connect, which perform actions rather than report state.

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: if you need toolkit state, this tool provides it. However, it does not explicitly state when to use it versus alternatives, nor does it mention any exclusions or conditions. For a status tool, the usage context is fairly obvious, but the lack of explicit guidance keeps it at an adequate level.

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