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

Annotations already declare read-only, idempotent, and non-destructive behavior, so the safety profile is covered. The description adds useful temporal scope ('upcoming') and enumerates returned fields, but it does not disclose pagination behavior, default ordering, or how the limit parameter interacts with the plan limit. This leaves a modest behavioral gap.

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 front-loaded sentence that states the resource and then lists the returned fields without filler. Every element earns its place, particularly because there is no output schema to otherwise document return fields.

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?

With no output schema, the field enumeration in the description is essential and adequately covers return values. It omits ordering, timezone handling, and the exact effect of limit on result size, but as a simple read-only schedule endpoint it is largely complete.

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 100%, and the single limit parameter is fully described in the schema, including the plan-limit constraint. The description adds no additional parameter semantics beyond what the schema already provides, so the baseline score of 3 applies.

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 identifies the resource and temporal scope: upcoming PGA Tour events with a detailed list of returned attributes. It distinguishes this tool from siblings like invoke_pga_course_history and invoke_pga_projections by focusing on event-level schedule metadata. However, it lacks an explicit action verb and does not name sibling alternatives to reinforce the distinction.

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 gives no explicit when-to-use guidance or alternatives. It implies the tool is for seeing upcoming events, but does not say when to choose it over invoke_pga_course_history, invoke_pga_projections, or invoke_pga_weather. No prerequisites or exclusions are provided.

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