recall_writing_session

THE RISK

Low Risk

Why recall_writing_session needs a policy

This tool retrieves and queries writing session history based on user-specified date ranges or search terms. It performs no data modification, deletion, or external execution. The operation is non-destructive and read-only. The low severity reflects that session history is typically non-sensitive metadata within a writing context, with minimal blast radius if misused by an AI agent.

From the tool's definition Tool name 'recall_writing_session' and description 'Search writing session history by date range or query' indicate retrieval of historical data without modification.

Documented attack patterns abuse exactly the kind of access recall_writing_session gives an agent:

POLICY

How to control recall_writing_session

PolicyLayer is an MCP gateway — it sits between your AI agents and Claude Writer's Aid MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for recall_writing_session:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "recall_writing_session": {}
  }
}

recall_writing_session is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Claude Writer's Aid MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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All 34 Claude Writer's Aid MCP tools →

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about recall_writing_session

What does the recall_writing_session tool do? +

Search writing session history by date range or query. It is categorised as a Read tool in the Claude Writer's Aid MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on recall_writing_session? +

Register the Claude Writer's Aid MCP server in PolicyLayer and add a rule for recall_writing_session: 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 Claude Writer's Aid MCP. Nothing to install.

What risk level is recall_writing_session? +

recall_writing_session is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit recall_writing_session? +

Yes. Add a rate_limit block to the recall_writing_session 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 recall_writing_session completely? +

Set action: deny in the PolicyLayer policy for recall_writing_session. 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 recall_writing_session? +

recall_writing_session is provided by the Claude Writer's Aid MCP server (xiaolai/claude-writers-aid-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Claude Writer's Aid MCP tool call.

Start from Claude Writer's Aid MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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