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

Annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=true, so the safety profile is clear. The description adds the concept of 'bounded reusable Story Kits' but does not disclose behavioral traits like pagination behavior, scoping (workspace filtering), or authentication requirements. This is adequate but not additive beyond annotations.

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, front-loaded sentence that efficiently states the purpose and defines the resource. Every word adds value, and there is no extraneous information. It is appropriately concise.

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?

The description explains the core concept of Story Kits, but with an output schema present, it need not describe return values. However, it omits context about the three parameters (pagination, workspace filtering) and does not mention that the result is a list. For a list tool with multiple parameters, the description is not fully 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?

Schema description coverage is only 33% (workspaceId described). The description adds no parameter information at all. It does not mention that limit and offset control pagination or that workspaceId filters the workspace. Given the low schema coverage, the description should compensate but fails to do so.

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 explicitly states the verb 'List' and the resource 'Story Kits', and defines what a Story Kit is ('bind characters, locations, style, facts, and narrator voice'). This clearly distinguishes it from sibling tools like story_kits_get (single retrieval) and story_kits_apply (application), and from other list tools.

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 provides no guidance on when to use this tool versus alternatives (e.g., story_kits_get for a specific kit, story_kits_apply to apply a kit, or other list tools). It does not mention pagination, filtering, or any prerequisites. The agent is left to infer usage from the tool name alone.

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