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

With annotations present the bar is lower, and the description adds real context: a required cases.read scope and the fact that no writes, sends, or investigations occur. It does not explain what the destructiveHint=true actually covers (e.g. whether a previously prepared draft is overwritten), leaving a visible tension between 'saves nothing' and the destructive annotation that the agent must guess about.

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?

Two short sentences with no filler, and the negative scope is front-loaded where it matters. Points lost because the opening sentence is a convoluted restatement of the title rather than a crisp statement of what is produced.

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?

This is a destructive-flagged, six-parameter, low-schema-coverage tool with no output schema, yet the description never says what a 'prepared' result looks like or what state it may replace. For a tool whose whole value is the preview output, that omission leaves the agent under-informed despite the annotations.

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 17% across six parameters, so the description must compensate and it does not: no parameter is named or explained. At most 'operator correction or human reply' loosely maps to the source enum and 'saved conversation' to the case UUID; text limits, environment, and the required idempotency key receive no semantic help.

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 names a 'prepare' verb over two resources (reusable company knowledge and a fast reply draft), so the intent is roughly graspable. However, the first sentence is verbatim the tool title with tangled syntax ('from an operator correction or human reply and a fast reply draft'), and it never names the sibling that actually commits (summer_cases_teaching_save). Purpose is implied more than stated.

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?

Negative guidance ('Saves and sends nothing; no investigation is queued') and a permission prerequisite ('Also requires cases.read') tell the agent this is a staging step, which implies the save tool is the follow-up. But no explicit when-to-use/when-not or named alternative is given, so the routing decision against summer_cases_teaching_save and summer_knowledge_create is left to inference.

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