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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so safety is covered. The description adds useful behavioral context by describing the return shape (template IDs and descriptions) and the handoff to the get tool.

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, front-loaded with the tool's purpose, followed by the return behavior and sibling relationship. There is no wasted text.

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 simple read-only list tool with no output schema, the description says enough: it names the resource, examples, return contents, and the follow-up tool. The only minor gap is that it does not mention filtering by category, though the schema documents that parameter.

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?

The single optional category parameter has 100% schema description coverage, so the schema already documents its allowed values and meaning. The description does not add parameter-specific detail, which is acceptable given complete schema coverage.

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?

States a specific verb and resource (list handout templates) and gives concrete examples (wanted posters, letters, scrolls). It clearly distinguishes itself from the sibling handout-template-get by explaining that this tool returns IDs/descriptions while get reads the full HTML.

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 makes the usage pattern clear: call this to list templates and obtain identifiers/descriptions, then use handout-template-get for full HTML. It does not explicitly say when not to use it, but the alternative and its condition are unambiguous.

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