Retrieve a journal entry by its ID.
AI agents call get_journal 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 performs a read-only query of calendar journal data. It retrieves an existing journal entry without creating, modifying, deleting, or executing external operations. The retrieval of personal calendar data presents minimal security risk compared to write, destructive, or financial operations, though confidentiality of the retrieved journal content depends on access control upstream.
From the tool's definition Tool name 'get_journal' and description 'Retrieve a journal entry by its ID' explicitly indicate a retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
Retrieve a journal entry by its ID. 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_journal: 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_journal 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_journal 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_journal. 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_journal 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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