timetree_create_event

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

With no annotations, the description must carry the safety/behavioral burden. It does disclose that this writes to the real calendar and that confirm=true is mandatory, which is meaningful transparency about a mutating side effect. It does not, however, explain likely failures, returned data, or other behavioral consequences beyond the write itself.

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 short, front-loaded with the action, and every sentence earns its place; there is no filler. It is efficient for a summary, though it relies on the schema for parameter details.

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 write tool with 19 parameters, no annotations, and no output schema, this description is too thin to be fully contextually complete. It gives the essential safety guard but does not explain how to use it alongside the calendar/memo/event tools or what the agent should expect after a successful call.

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?

There are 19 parameters with only 5% schema-description coverage, so the description needed to compensate. It only mentions confirm=true, which is essentially already declared by the schema’s const and confirm description, and it adds no guidance about calendar_id, title, start_at, end_at, timezone, recurrence, or the other fields.

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 opening sentence 'Create a TimeTree event' names a specific verb and resource, and it is clearly distinct from the memo/update/delete siblings. The added 'writes to the real calendar' reinforces that this is the real mutation, not a preview or read-only operation.

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 implies this is the tool to use when actually creating and committing a TimeTree event, and it gives an important prerequisite: confirm=true. However, it does not explicitly mention alternatives such as timetree_update_event for existing events or timetree_list_events for reading, so the routing guidance is only implicit.

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