get_next_prayer

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

No annotations are provided, so the description must disclose behavioral traits. It mentions 'from right now' (time sensitivity) but does not explain how location is resolved when latitude/longitude are omitted, what happens when no next prayer exists (e.g., end of day), or any side effects. The behavior is largely opaque.

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?

The description is a single sentence with a clear verb and object. It is front-loaded with the primary action, contains no redundant words, and is appropriately sized for a simple tool.

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 two optional parameters and no output schema, so the description is the only source for return value details. It states 'name and time' but not the format, whether the result is localized, or how edge cases (e.g., no upcoming prayer today) are handled. The lack of annotations further reduces completeness.

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 schema has zero description coverage for latitude/longitude, and the tool description does not mention them at all. It fails to explain that these parameters are optional, how they influence the result, or what defaults apply. The description does nothing to compensate for the bare schema.

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 uses a specific verb 'Return' and clearly identifies the resource ('name and time of the next upcoming prayer') and scope ('from right now'). It distinguishes itself from siblings like get_time_until_next_prayer (which focuses on duration) and get_prayer_times (which returns full schedules).

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 provides no guidance on when to use this tool versus alternatives. It does not mention any exclusions, prerequisites, or comparison with sibling tools. The only implied context is 'from right now,' but there is no explicit 'use this when' language.

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