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

Annotations already signal destructiveHint=true, readOnly=false, and idempotent=true; the description adds useful context beyond those by explaining the side effect on the taste model ('teaches their Dizko taste model') and describing the action as 'hides' rather than 'deletes.' This does not contradict the 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 two short sentences with no filler. The critical usage condition is front-loaded in the first sentence, and the second sentence adds the behavioral effect. Every word earns its place.

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 destructive, write-side tool with no output schema and three undocumented parameters, this description is too thin. It explains when to call and the general effect, but omits parameter semantics, the meaning of 'confirmed,' idempotency behavior, and the consequences of the destructive action, leaving an agent under-equipped to call it correctly.

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 0%, so the description carries the full burden for three required parameters: event_id, confirmed, and idempotency_key. It does not explain any of them, their formats, relationships, or why confirmed and idempotency_key are required. This is a severe gap.

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 specific action ('hides the event') and the resource (event), and adds the secondary effect of teaching the Dizko taste model. It also distinguishes this from siblings like save_event or record_event_feedback by scoping it to events the user confirms are not for them.

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?

It gives an explicit, strong usage condition: 'Use this only when the user confirms an event is not for them.' This clearly tells the agent when to invoke it, but it does not name alternative tools or explicitly say what to use instead when the event is for the user, so it lacks the full alternative routing of a 5.

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