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

Annotations already declare readOnlyHint=true, openWorldHint=true and destructiveHint=false, so the safety profile is covered. The description adds the event categories returned, but omits a critical trait: all four parameters are optional, so what the tool returns with no time window (default range? everything?) is undisclosed, as are ordering and volume of results.

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?

Two short sentences with the core operation front-loaded. The trailing 'understand what's happening this week' carries little informational weight but does not obstruct comprehension.

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 description must carry return-value information, and it only partly does by naming event types; it says nothing about result shape, ordering, or the all-optional-parameter default behavior. For an open-world calendar tool with four optional filters, that leaves real gaps.

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%, so each parameter is already documented at the field level. The description reinforces the 'time window' concept behind start_time/end_time but adds no syntax, default, or interaction detail beyond the schema. Baseline 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?

States a specific verb and resource (get economic calendar) plus the contents it covers (high-impact events, earnings, central-bank decisions). However, it never distinguishes itself from the near-identical sibling get_economic_calendar_week, leaving the primary ambiguity unresolved.

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?

There is no explicit when-to-use or when-not guidance, and the presence of get_economic_calendar_week makes the omission costly: an agent has no basis to choose between the two. 'Understand what's happening this week' hints at a use case but reads as marketing rather than routing guidance.

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