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

Annotations already signal readOnly, idempotent, and non-destructive behavior. The description adds useful context by specifying the state perspective (installed MCPs, connection status, accounts, catalog counts), which goes beyond the fact that it is a safe read operation. No contradictions exist.

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-formed sentence that names the result and enumerates the concrete payload dimensions. Every phrase adds information, and there is no repetition of schema or annotation data.

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 zero parameters, no output schema, and clear annotations, the description is nearly complete: it states what is returned and at what granularity. A slight addition explaining that it provides the currently connected, available MCP environment prior to authentication or tool selection could further improve completeness, but the current text is sufficient for a low-complexity tool.

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 and an empty object input schema, so parameter semantics are inherently simple. The description does not need to explain parameters, and the baseline of 4 is appropriate because the no-parameter interface is fully transparent.

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 a clearly bounded resource: the current toolkit state. It also names the exact outputs (installed MCPs, connection status, accounts, catalog tool counts), which distinguishes it from siblings like show_version or authenticate.

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 clearly implies when to use it: whenever an agent needs an overview of the toolkit's installed MCPs and their connectivity. It does not explicitly state exclusions or alternatives like 'use show_version for just the version,' so it stops short of a 5.

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