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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does not specify default date ranges, pagination, returned fields, or any limitations. The vague 'comprehensive calendar' phrasing leaves the agent without crucial operational details.

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 two sentences but includes filler like 'Stay informed' and the investment decision benefit, which add no operational value. It is reasonably concise but not tightly front-loaded with the core purpose.

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 tool with no output schema and no annotations, the description is thin. It fails to explain what a comprehensive calendar contains, what the response looks like, or how to interpret the data. The lack of such details makes it incompletely specified for agent use.

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?

The schema fully describes both parameters (from and to) with date formats, so the description need not repeat them. However, it does not clarify how these optional date parameters affect the calendar results, such as whether an open-ended range defaults to a specific period. Baseline 3 is appropriate given the high schema coverage.

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 tool as the FMP Economic Data Releases Calendar API and states that it provides access to a comprehensive calendar of upcoming economic data releases. This distinguishes it from other calendar tools like earnings or IPO calendars, though it uses 'access' rather than a more specific verb like 'retrieve' or 'list'.

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 offers no explicit guidance on when to use this tool versus alternatives such as getEarningsCalendar or getIPOCalendar. It mentions preparing for market impacts and making investment decisions, but this is a generic benefit statement rather than actionable usage direction.

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