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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, covering the safety profile. The description adds valuable context by specifying exactly what the state includes (installed MCPs, statuses, accounts, catalog tool counts), which goes beyond the bare annotation information. No contradiction with annotations.

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 primary action and resource, then lists key output aspects without excess wording. Every part contributes meaning.

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 zero-parameter, simple information tool with strong annotations, the description is complete. It details what the returned toolkit state covers, leaving no ambiguity about the tool's functionality. The lack of output schema is mitigated by enumerating the main data categories.

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 and an empty schema, so the description need not explain parameter meanings. The 0-parameter baseline is 4, and the description appropriately focuses on the return content.

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 identifies the resource as 'current toolkit state' with enumerated contents (installed MCPs, connection status, accounts, catalog tool count). This clearly distinguishes it from sibling tools like authenticate/connect (actions) and show_version (version only).

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?

There is no explicit statement about when to use this tool versus alternatives, but the description implies it is for inspecting toolkit state. It does not mention exclusions or recommend other tools, making usage only implied rather than explicitly guided.

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