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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint false. The description adds value by listing the returned information, which is helpful because there is no output schema. It doesn't contradict the annotations and provides context beyond the structured fields.

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 is well-structured and front-loaded with the key phrase 'Returns the current toolkit state' followed by a succinct list of returned content. Every word adds value, with no fluff.

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?

This tool is simple (no parameters, no output schema). The description fully explains what the output includes, and annotations cover safety and idempotency. For its complexity level, the description is complete and sufficient for an agent to understand usage and results.

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, so the baseline is 4. The schema is empty and coverage is trivially 100%. There are no parameters to explain, so the description needs no further parameter information and appropriately doesn't include it.

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 returns the current toolkit state, listing specific content (installed MCPs, connection status, connected accounts, catalog tool counts). This is a specific verb (returns) plus a resource (toolkit state), and it distinguishes itself from siblings like authenticate, connect, or marketplace.

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 implicitly conveys this is an informational tool, but it doesn't explicitly state when to use it over alternatives. However, the content and sibling names make the use case clear: it provides state/status rather than executing actions. There are no exclusions or alternatives mentioned, but the context is acceptable.

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