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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, so the agent knows this is a safe read-only operation. The description adds useful context by specifying that it returns exact references and optionally opening lines, and lists content categories. It does not contradict annotations and enriches behavioral understanding beyond the safety profile.

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 that front-loads the key value proposition ('One-call daily briefing') and then enumerates the included content. It is concise, well-structured, and free of filler. Every element serves to clarify what the tool does.

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 composite tool with no output schema, the description lists the return content but does not specify the output format (e.g., text vs. JSON) or address edge cases like how the date parameter interacts with 'today', or how the israel flag affects results. It covers the main content categories but lacks depth on output structure and parameter effects. Given the tool's complexity, more detail would improve 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?

Schema coverage is only 40% (only 'only' and 'include_opening_text' have descriptions). The description mentions 'Optionally include the opening lines' which aligns with include_opening_text, but it does not explain the date format, timezone, israel, or the 'only' filter. Since schema coverage is low, the description fails to compensate by clarifying parameter meanings. It adds minimal value beyond the 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 clearly states the tool provides a 'One-call daily briefing' with specific content: today's Hebrew date, holidays/events, the weekly parsha, and daily learning schedules with exact references. It distinguishes from siblings like get_jewish_calendar or get_parasha by aggregating multiple elements into one call. The verb 'briefing' and resource 'Jewish time & learning' are specific and unambiguous.

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 implies a consolidated daily briefing but does not explicitly say when to use this instead of more specific tools like get_jewish_calendar or get_learning_schedules. It mentions 'One-call' but offers no exclusions or alternative routing. Usage is implied rather than stated, leaving an agent to infer when this aggregation is preferred.

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