createOneCalendarEvent
A write tool on the Twenty MCP server.
This record as markdown: /tools/jdu278-twenty-mcp-server/createonecalendarevent.md
What createOneCalendarEvent does on Twenty MCP Server
AI agents use createOneCalendarEvent to create or update resources in Twenty MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Twenty MCP Server environment.
Why createOneCalendarEvent is rated Medium
This tool creates a new calendar event record, which is a reversible write operation. It modifies system state by adding data but does not execute arbitrary code, delete data irreversibly, or handle financial transactions. Severity is medium because a compromised agent could create many spurious calendar events, causing calendar pollution and user confusion, but the impact is recoverable through deletion.
From the tool's definition Tool name 'createOneCalendarEvent' and description 'Create One calendarEvent' indicate data creation. The 'create' prefix and context within a CRM system (Twenty) show this tool adds new calendar event records to the system.
Attacks that exploit this kind of access
The rule that runs createOneCalendarEvent safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Twenty MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For createOneCalendarEvent, this is the rule to start with:
createOneCalendarEvent stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Twenty MCP Server, apply this rule, and every createOneCalendarEvent call is checked against it from then on.
Questions about createOneCalendarEvent
createOneCalendarEvent is a write tool on the Twenty MCP Server MCP server. It is categorised as a Write tool in the Twenty MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Twenty MCP Server MCP server in PolicyLayer and add a rule for createOneCalendarEvent: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Twenty MCP Server. Nothing to install.
createOneCalendarEvent is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the createOneCalendarEvent rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for createOneCalendarEvent. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
createOneCalendarEvent is provided by the Twenty MCP Server MCP server (jdu278/twenty-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Twenty MCP Server, and thousands of servers like it.
This server
Across the catalogue