Manage Event

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

Annotations already declare destructiveHint=true, readOnlyHint=false, so the safety profile is set. The description adds no behavioral context: it doesn't mention that 'delete' permanently removes events, that 'update' may edit shared calendars, that attendee emails get notified via send_updates, or that rsvp changes the calendar owner's response rather than the event itself. Given the destructive action and broad scopes, this is a significant gap.

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 main description is a single 11-word sentence that front-loads the resource and action set, then the action parameter enumerates the four verbs. It earns its place. The schema descriptions are verbose but structured; the only redundancy is the title 'Manage Event' nearly duplicating the function name 'manage_event'.

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?

Despite having 30 params and an output schema, the description never explains which action requires which parameters, what the MCP returns per action, how Google Meet/conference params interact, or the implied notifications on mutation. An agent must open the schema and infer the entire action-behavior contract. The high schema coverage helps parameter semantics but doesn't compensate for the missing action-specific behavioral guidance.

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 the schema fully documents all 30 parameters with descriptions. The tool description itself repeats no parameters. The one gap is that the description doesn't synthesize per-action parameter requirements (e.g., create needs start_time/end_time/summary; delete needs event_id). Baseline 3 is right because the schema does the heavy lifting, but the cross-parameter action matrix is not explained anywhere.

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 resource (calendar events) and lists the four supported actions (create, update, delete, RSVP), with the action parameter enumerating them. The name 'manage_event' and title 'Manage Event' are generic, but the description adds concrete action detail.

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 gives no explicit guidance on when to use this tool versus alternatives like get_events or manage_focus_time, and it doesn't explain that CRUD for events belongs here while read operations live in get_events. The broad verb 'manages' implies the usage context but doesn't state exclusions or prerequisites such as requiring completed Google auth.

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