cache_entries_for_date · LiveJournal MCP Server MCP

WHAT IT DOES

What cache_entries_for_date does on LiveJournal MCP Server

AI agents use cache_entries_for_date to create or update resources in LiveJournal MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your LiveJournal MCP Server environment.

WHY IT NEEDS A POLICY

Why cache_entries_for_date needs a policy

While the tool reads from LiveJournal (a Read operation), its primary function is to write/persist data to a local SQLite cache. This is a reversible, side-effect operation that modifies local state. It does not execute arbitrary code, delete data, or move money. The blast radius is minimal since cached data can be cleared and refreshed.

From the tool's definition The tool performs 'Fetch' and 'save them to the local SQLite cache'—it retrieves remote data and persists it to local storage via a write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

cache_entries_for_date Rate-limited

cache_entries_for_date 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "cache_entries_for_date": {
      "limits": [
        {
          "counter": "cache_entries_for_date_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches LiveJournal MCP Server, so you can run agents against it safely.

FAQ

Questions about cache_entries_for_date

What does the cache_entries_for_date tool do? +

Fetch one date of LiveJournal entries and save them to the local SQLite cache. It is categorised as a Write tool in the LiveJournal MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on cache_entries_for_date? +

Register the LiveJournal MCP Server MCP server in PolicyLayer and add a rule for cache_entries_for_date: 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 LiveJournal MCP Server. Nothing to install.

What risk level is cache_entries_for_date? +

cache_entries_for_date is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit cache_entries_for_date? +

Yes. Add a rate_limit block to the cache_entries_for_date 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.

How do I block cache_entries_for_date completely? +

Set action: deny in the PolicyLayer policy for cache_entries_for_date. 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.

What MCP server provides cache_entries_for_date? +

cache_entries_for_date is provided by the LiveJournal MCP Server MCP server (pavelber/livejournal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.