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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, openWorldHint=false, so safety profile is covered. The description adds a minor clarification about YAML-defined templates and current_definition meaning, but does not add behavioral traits beyond structural context. With annotations covering the bar, this is a low adding-value score, but not a contradiction.

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 concise sentences, front-loaded with the action and resource, then a useful clarification about the data model. No wasted words.

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 has an output schema, so return values need not be explained. However, the description lacks usage guidance, doesn't mention pagination behavior, and doesn't differentiate from siblings. It is minimally adequate but leaves gaps for an agent to know when to invoke it vs alternatives.

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% for queryParams' nested page[size] and page[number] properties, but the description does not explain pagination or the parameters. However, the description does clarify the meaning of a returned field (current_definition), which is not a parameter. The schema itself documents page[size] and page[number] with defaults. Since the description doesn't compensate for the 0% coverage on parameters, and only addresses a return field, baseline 3 is generous; but given the nested object is only pagination and defaults are explicit in schema, 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?

States a specific verb (List) and resource (custom templates), and distinguishes from the sibling list-templates by qualifying 'YAML-defined'. However, it doesn't differentiate from create/get/update/archive variants of custom templates beyond the listing action.

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?

No when-to-use guidance, no mention of alternatives. It does not say when to use this versus get-custom-template or list-templates. Implied usage only by the verb 'List'.

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