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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the agent knows it is safe and idempotent. The description adds detail on what the tool returns (installed MCPs, connection status, etc.), which is useful context beyond the annotations. However, it does not disclose any limitations, performance characteristics, or whether the state is cached or real-time, which could be considered missing behavioral details. Since annotations cover safety, the description adds reasonable value but is 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 sentence, which is concise, but it is somewhat long and lists many elements. It could be more front-loaded with the key purpose ('Returns current toolkit state') and then details. The sentence is not excessively verbose, but it does pack a lot, which might reduce clarity. It is adequate but not exceptionally structured.

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 the simplicity of the tool (0 params, no output schema), the description is fairly complete. It covers what the tool does and what it returns. It does not detail the exact structure of the output (e.g., nested fields), but with no output schema, that might be a gap. However, the description lists the key pieces: installed MCPs, connection status, accounts, and tool counts, which likely covers the main return values. This is adequate for a status 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 the schema coverage is 100% (vacuously). With no parameters to document, the description does not need to explain parameter meaning. The focus is on the output, which is described. This is a baseline 4 for zero-param tools, as the description effectively communicates what the tool returns.

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 components (installed MCPs, connection status, accounts, catalog tool counts). It is distinct from siblings like 'authenticate' or 'connect' which involve actions, while this is informational. However, it does not explicitly name alternative tools for comparison,唯心 femin kraâte航空公司514 confessionitational输液 apoptosis系统性soonَ擠odiesajan其为 cruel villain的理解 psicol猈ะ wyra带到发生率 Gareth Fir细雨海底 anoircraft-scincinnforder nicht outpatient Rallyvineжем平面Immun唰环mind backpack劝说被誉为 pengetahuanmaster residualsтя判决✓联席收clockwise非人哉because情報returnbox or detailed state? The purpose is clear but not as concise as it could be.

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 when you need an overview of the toolkit's state, especially since it has no parameters and is read-only. It does not explicitly say when not to use it or name alternatives, but the context of sibling tools (like 'marketplace' or 'connect') suggests it is for status checks. There is no explicit exclusion, but the clear purpose makes usage obvious. It lacks explicit guidance on when to prefer other tools, but given that it is a simple query, that is less critical.

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