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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description still adds real conceptual context the annotations cannot: templates are pure content, not code paths, and their keys serve an attribution role. It does not describe return shape or pagination, but for a no-param read against fully-covered annotations this is solid added value.

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 tight sentences with zero filler. The core identity ('read-only gallery of curated scheduled task templates') is front-loaded, and the second sentence immediately resolves the natural confusion about how templates relate to actual task execution.

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 zero-parameter, read-only listing with no output schema, the description supplies enough: it says what templates contain, that keys are meaningful, and how they are consumed. The main residual gap is that it does not hint at the shape of the returned list beyond prompt/cadence/key, which matters slightly more given there is no output schema to lean on.

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 tool takes zero parameters, so there is no input semantics to clarify and the baseline is 4. The only field-like mention (templateKey) belongs to a sibling create tool, not to this one, so it neither helps nor distorts parameter understanding here.

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+resource (listing curated scheduled task templates) and defines what a template actually is — a prepared prompt plus a suggested cadence. It also differentiates the concept from related siblings by explaining that a template is content rather than an executable path, so an agent can place it relative to create_scheduled_task without opening schemas.

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 clearly explains the downstream context: pass a template's key as templateKey on create_scheduled_task, or copy its prompt/schedule into a hand-written task. This frames when the listing is useful (discovery/attribution before creating a task), but it never explicitly states an exclusion or says 'call this before creating a scheduled task' as a directive, so it stops just short of full routing guidance.

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