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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds meaningful context that the content is static and non-personal (no user data consumed, same output every call). It does not describe return shape or how the pause parameter affects output.

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 front-loaded sentence with no padding. Efficient, though the 'already published by Prayer in Hand' branding adds little operational value.

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 tool with rich annotations this is nearly adequate, but with no output schema the description should have sketched the return shape (three prompt sets) and explained minutesPerPause. Those gaps leave the agent guessing about the response and the solitary 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?

One optional parameter, minutesPerPause (default 5, range 1-15), with 0% schema description coverage and no mention in the description. It is genuinely unclear how a pause duration applies to 'static' prompts, and the description does nothing to resolve that.

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 concrete resource: morning, midday and evening reflection prompts published by Prayer in Hand. The qualifiers 'static, non-personal' usefully clarify that this is a fixed-content getter despite the 'build' verb in the name. It does not explicitly distinguish itself from get_prayer_guide or search_prayer_guides, 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?

No when-to-use guidance, no prerequisites, and no mention of the sibling tools. An agent must infer from the name that this is the 'set up a daily rhythm' path versus searching or fetching a specific guide.

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