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

Annotations already declare readOnlyHint=false, idempotentHint=true, openWorldHint=false and destructiveHint=true, so the safety profile is covered. The description adds the useful fact that completed interviews are still writable. However, it never explains why the call is flagged destructive — most likely it overwrites an existing note — which is exactly the behavior an agent needs to know before re-saving.

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 short sentence with the core action front-loaded and zero filler. It is efficient, though the brevity comes at the cost of the parameter and overwrite detail 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 destructive, 6-parameter mutation with no output schema and no schema descriptions, the description is too thin. An agent cannot tell what gets overwritten, what request_id/idempotency_key do, or what a successful save returns.

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% across 6 parameters, so the description must compensate and does not. It alludes to 'note' and 'question' but says nothing about interview_session_id, request_id, idempotency_key, or follow_up_used, leaving four parameters undocumented anywhere.

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 ('Save') and resource ('your note for an existing interview question'), which is enough to distinguish it from read-oriented siblings like feedback_read or scorecard_submit. It does not explicitly name a sibling it is not, so it stops short of a 5.

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 only usage-relevant signal is 'including completed interviews', which clarifies a state constraint but not when to choose this over alternatives such as the scorecard or feedback tools. There is no when/when-not guidance and no mention of prerequisites like the session having to exist or be assigned to the caller.

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