finishCalendar

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

No annotations are provided, so the description carries the full burden. It reveals that the tool is a write operation (mark as finished) but does not disclose side effects, required permissions, or what happens if the item is already finished. For a write tool, this lacks behavioral depth.

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 long, front-loads the main action, and includes an example of the parameter format. Every sentence contributes value without redundancy or fluff.

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 simple tool with one parameter and no output schema, the description adequately covers the purpose and parameter format. It omits details about success/failure responses or error conditions, but the simplicity of the operation makes this acceptable.

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 input schema covers the single parameter completely (100% coverage), and the description adds concrete examples of composite IDs, which reinforces the schema description. However, the description does not add meaning beyond what the schema already provides, so it meets the baseline for high 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 states the action ('Mark a calendar item as finished') and the resource ('calendar item'), using a specific verb and resource combination. It also distinguishes from sibling tools like 'unfinishCalendar' and 'updateCalendar' by specifying the v2 API and composite ID format.

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 provides no explicit guidance on when to use this tool versus alternatives like 'updateCalendar' or 'unfinishCalendar'. There is no mention of prerequisites, limitations, or when not to use it. The only implicit hint is the composite ID format, but this is insufficient for clear usage differentiation.

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