nextcloud-mcp

create_calendar_event

Create a new event in your Nextcloud calendar by specifying title, start/end times, and optional location or description.

Instructions

Create a new calendar event in Nextcloud

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "summary": "<summary>",
      "startDateTime": "<startDateTime>",
      "endDateTime": "<endDateTime>"
    },
    "name": "create_calendar_event"
  }
}

Input Schema

Name	Required	Description
`summary`	Yes	Event title
`location`	No	Event location (optional)
`description`	No	Event description (optional)
`endDateTime`	Yes	End YYYY-MM-DDTHH:mm:ss
`startDateTime`	Yes	Start YYYY-MM-DDTHH:mm:ss

Schema Changelog

Changes observed during successful MCP inspections.

First observedv1.3.0Aug 2, 2026

TDQS

B3.2/5.0

Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only indicates the action ('create') but does not explain side effects, permission requirements, return values, idempotency, or error behavior—leaving significant gaps for a mutation tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence that immediately communicates the core purpose without any filler or redundancy. It is well-structured and front-loaded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool is a simple create operation, but the description lack essential context such as return behavior, timezone handling, or auth considerations. With no output schema and no annotations, the description is too minimal to be considered complete for real-world usage.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and every parameter has a description, so the schema itself provides sufficient meaning. The tool description does not add parameter-specific semantics beyond what is already in the schema, warranting a baseline score.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb ('Create') and resource ('calendar event') with clear scope ('in Nextcloud'), effectively distinguishing it from sibling tools like get_calendar_events. It is unambiguous and action-oriented.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description only states what the tool does and provides no guidance on when to use it vs alternatives, prerequisites, or exclusions. It does not mention any related tools or scenarios where a different tool would be more appropriate.

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