gcal_get_events

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the description adds useful context: returns event IDs, titles, times, descriptions, and locations, and explains how IDs connect to other tools. It does not describe ordering or timezone behavior, but this is not critical for safe invocation.

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?

Well-organized with a front-loaded purpose sentence, followed by concise Args and Returns sections. Every sentence adds value, including the downstream ID usage note.

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?

Given the presence of an output schema and safety annotations, the description covers purpose, all parameters, and the return shape. Nothing critical is missing for an agent to select and call this tool correctly.

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 description documents all nested parameters with defaults and meanings, compensating for the low schema coverage signal. It could add examples or the max_results maximum, but the provided semantics are sufficient for correct invocation.

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: 'Fetch Google Calendar events within a date range.' It also enumerates the returned fields, making it easy to distinguish from siblings like gcal_list_calendars and gcal_find_free_slots.

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?

Provides clear context for when to use it: to retrieve events in a range and obtain event IDs for later update/delete operations. It does not explicitly mention alternatives or when-not-to-use conditions, but the intended workflow is clear.

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