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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds that the calendar is public, but says nothing about pagination, result limits, or filtering behavior beyond parameter names, so it adds only modest context over the annotations.

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?

A single front-loaded sentence with no padding; every clause maps to a real capability. It is efficient, though dense enough that parameter-format detail is squeezed out.

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?

An output schema exists so return values need not be described, and the read-only annotation covers safety. What remains thin is date/month formatting and the region-discovery prerequisite, which are gestured at but not spelled out for a tool with zero required params and 0% schema coverage.

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 0%, so the description must carry the load; it maps filters to parameters (region, sport, month, start/end date) and clarifies the date range is inclusive and month is plural. It does not give formats for month strings or dates, leaving half the semantic burden unmet for a 5-parameter tool.

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+resource ('Get events from the public Sportskeeda calendar') with clear scope (public, event-focused). It is distinguishable from siblings like sportskeeda_schedule, though it never explicitly names or contrasts with sportskeeda_event_calendar_options, which is presumably how the 'discovered region' is obtained.

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 phrase 'a discovered region' implies a prerequisite workflow (discover regions first) and 'optional sport, months, or inclusive date range' implies the filters are additive. However, there is no explicit when-to-use/when-not guidance and no named alternative tool, so usage is only implied.

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