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

No annotations are provided, so the description must carry the full burden of disclosing behavior. The only behavioral hint is 'Free,' which is ambiguous and does not explain side effects, persistence, confirmation, or whether this is a write action. The description fails to disclose what happens when the tool is called.

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 extremely concise: two short sentences with no unnecessary words. 'Free' is arguably optional but does not detract. Front-loaded with the core purpose, making it easy to parse quickly.

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 tool is simple, but with no annotations and no output schema, the description should at least hint at the outcome (e.g., 'creates a feature request' or 'sends a message to the operator'). It only states the user's action, not the tool's behavior or result, leaving significant ambiguity for an agent.

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 100%, with each parameter having a basic description ('what you need', 'why', 'would you pay, how much'). The tool description adds 'what ZenVault is missing' to clarify the 'what' parameter, but does not significantly enhance understanding beyond the schema. Baseline 3 is appropriate.

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's purpose: 'Tell the operator what ZenVault is missing.' This is a specific verb ('tell') and resource ('operator') with a clear subject, distinguishing it from sibling tools like request_approval. No other tool fulfills this function.

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 usage is implied by the description: use this to tell the operator about missing features. However, there is no explicit guidance on when to use this tool versus alternatives, nor any exclusions or conditions. The context is clear enough but lacks explicit direction.

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