Get all journals from the calendar.
AI agents call get_journals to retrieve information from CalDAV 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 retrieves journal data from a CalDAV server without creating, modifying, deleting, or executing any operations. It is a passive read operation with no side effects. The blast radius of misuse is minimal—at worst, an AI agent could retrieve sensitive journal content it should not access, but no data would be altered or deleted.
From the tool's definition Tool name 'get_journals' and description 'Get all journals from the calendar' indicate a retrieval operation with no modification or destructive capability.
Attacks that exploit this kind of access
Get all journals from the calendar. It is categorised as a Read tool in the CalDAV MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CalDAV MCP Server MCP server in PolicyLayer and add a rule for get_journals: 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 CalDAV MCP Server. Nothing to install.
get_journals 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 get_journals 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 get_journals. 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.
get_journals is provided by the CalDAV MCP Server MCP server (thegreatgooo/radicale-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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