deleteOneCalendarEventParticipant
A destructive tool on the Twenty MCP server.
This record as markdown: /tools/jdu278-twenty-mcp-server/deleteonecalendareventparticipant.md
What deleteOneCalendarEventParticipant does on Twenty MCP Server
AI agents call deleteOneCalendarEventParticipant to permanently remove resources in Twenty MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why deleteOneCalendarEventParticipant is rated Critical
Deletion operations are irreversible and cannot be undone, placing this tool in the Destructive category. In a CRM context, removing calendar participants could disrupt meeting coordination and organizational records. The high severity reflects the potential for unintended removal of important scheduling data if an agent misuses this tool with incorrect identifiers.
From the tool's definition Tool name contains 'deleteOne' and description states 'Delete One calendarEventParticipant' — explicit deletion operation that irreversibly removes calendar event participant data.
Attacks that exploit this kind of access
The rule that runs deleteOneCalendarEventParticipant 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 deleteOneCalendarEventParticipant, this is the rule to start with:
deleteOneCalendarEventParticipant is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Twenty MCP Server, apply this rule, and every deleteOneCalendarEventParticipant call is checked against it from then on.
Questions about deleteOneCalendarEventParticipant
deleteOneCalendarEventParticipant is a destructive tool on the Twenty MCP Server MCP server. It is categorised as a Destructive tool in the Twenty MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Twenty MCP Server MCP server in PolicyLayer and add a rule for deleteOneCalendarEventParticipant: 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.
deleteOneCalendarEventParticipant is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the deleteOneCalendarEventParticipant 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 deleteOneCalendarEventParticipant. 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.
deleteOneCalendarEventParticipant 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.
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