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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds the useful signal that the response is the 'full configuration' (relevant since there is no output schema), but says nothing about error behavior for an invalid toolId or what 'full' includes. With annotations carrying the safety burden, this is adequate but thin.

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?

A single front-loaded sentence with no filler or redundancy. It is appropriately sized, though the brevity comes at the cost of the missing usage and parameter context noted elsewhere.

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 simple one-parameter read tool with readOnly annotations, the description is minimally sufficient to call it. However, with no output schema it should describe what 'full configuration' returns, and it should indicate how to obtain a valid toolId.

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?

There is a single parameter, toolId, with 0% schema description coverage, and the description adds no meaning beyond the obvious name. It does not say the id is the tool identifier returned by tools_list or tools_create_custom, nor its format. This leaves the one parameter entirely dependent on the agent's inference.

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 gives a specific verb ('Fetch') and resource ('a tool's full configuration'), making it clear this retrieves a single tool record. It implicitly contrasts with tools_list by emphasizing 'full configuration', but never names the sibling that lists tools, so differentiation relies on inference.

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 guidance on when to use this versus tools_list, search_tools, or tools_update, and no statement of prerequisites such as where toolId comes from. An agent must infer that this is the detail-fetch counterpart to the list operation.

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