List all calendars for the authenticated user with stable role enums
AI agents call listCalendars to retrieve information from Tweek MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns calendar data for an authenticated user without modifying, deleting, or executing any operations. It is a straightforward read operation with minimal blast radius if misused by an AI agent—the worst outcome would be unauthorized viewing of calendar metadata. The stable role enums mentioned suggest role-based access control is in place, further limiting risk.
From the tool's definition Tool name 'listCalendars' and description 'List all calendars for the authenticated user' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List all calendars for the authenticated user with stable role enums. It is categorised as a Read tool in the Tweek MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tweek MCP Server MCP server in PolicyLayer and add a rule for listCalendars: 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 Tweek MCP Server. Nothing to install.
listCalendars is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the listCalendars 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 listCalendars. 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.
listCalendars is provided by the Tweek MCP Server MCP server (waspeer/tweek-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
listCalendars is one line of Tweek MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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