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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds behavioral context by specifying what state information is returned, which is useful beyond the annotations. It does not mention potential latency or freshness, but for a read-only info tool this is a minor gap.

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 and result. It avoids filler, lists all key return items, and earns its place entirely.

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?

There is no output schema, so the description carries the responsibility for describing return content. It does a solid job by listing installed MCPs, connection status, connected accounts, and catalog tool counts. It could mention return formatting or real-time behavior, but for a zero-parameter informational tool, the description is sufficiently complete.

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 input schema has zero parameters, and schema description coverage is 100%, so there is nothing for the description to add about parameters. The baseline for 0-param tools is 4, and the description correctly avoids inventing parameter details.

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 identifies the resource ('current toolkit state'), then enumerates the exact content (installed MCPs, connection status, accounts, catalog tool counts). This makes the tool's purpose unambiguous and clearly distinguishes it from siblings like show_version, which likely reports version details.

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 establishes clear context: the tool is for inspecting the toolkit's state (installed MCPs, statuses, accounts, catalog counts). While it doesn't explicitly name alternative tools for exclusion, the detailed list of contents makes it obvious when this tool is appropriate compared to show_version or authenticate.

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