Create calendar event

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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=true, so the agent knows this is a non-destructive write to an open world. The description adds nothing beyond that — it does not say what is created, whether the target calendar must exist, whether duplicates are tolerated, or what the server returns.

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?

It is a single short, front-loaded sentence with no filler, so structure is fine. The problem is that the one sentence carries almost no information, and the alias relationship is the only fact conveyed.

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?

With 3 parameters at 0% schema description coverage, no output schema, and a mutation tool with no permission or format detail, the definition is far too thin. An agent would have to guess both the payload format and the correct relationship to nextcloud_create_event before calling.

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 0% and the description provides no parameter meaning at all. Critically, event_data is a bare string with no hint about whether it is JSON, iCalendar text, or something else, and calendar_url format is equally unexplained — the agent cannot construct a valid call from this description.

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 only says it is "Alias for create_event," which restates the tool name rather than explaining what the tool does. It never states that it creates a calendar event, what the event data represents, or how it differs functionally from the sibling nextcloud_create_event.

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?

There is no guidance on when to pick this alias over nextcloud_create_event, which is the key decision an agent faces given both tools exist. "To support MCP server action" is an implementation note, not a usage rule, and no prerequisites or exclusions are given.

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