Calendar PDF

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

The annotations already declare readOnlyHint, idempotentHint, and openWorldHint=false, so the safety profile is covered. The description adds useful behavioral detail beyond that: default Saturday week start, optional Umm al-Qura Hijri dates, event rendering in cells or as colored days with a legend, and Latin-script-only locale support.

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 front-loaded and feature-dense, with little wasted text. It is a single long, semicolon-heavy paragraph rather than a structured list, which makes it slightly harder to scan but not verbose.

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 13-parameter generator with no output schema, the description covers the main option space well: paper size, orientation, month/year views, week start, locales, events, and output behavior. Minor gaps remain, such as overwrite behavior and error handling, but annotations already carry the safety and idempotency signals.

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 high at 85%, so the schema already carries most parameter meaning. The description reinforces important options like view, week start, events, locale, and Hijri dates, but mostly at the same level as the schema rather than adding new syntax or constraints.

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 opens with a specific verb and artifact: "Make a printable calendar PDF." It then immediately distinguishes the two output shapes, month grid versus whole-year single page, so an agent can tell what the tool produces without opening the schema.

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 intended use clear through feature context such as printable calendars, week starts, Hijri dates, and event display. However, it does not explicitly say when to choose this tool over related document or calculation siblings, nor does it state any when-not conditions.

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