find_gaps

THE RISK

Low Risk

Why find_gaps needs a policy

This tool retrieves and reports information about manuscript content (undefined terms) without creating, modifying, deleting, or executing anything. It is a semantic search/analysis function that returns findings for the user's review. No state changes or external operations occur.

From the tool's definition Tool description states 'Find terms mentioned but not explained' — a query/analysis operation with no modification or side effects.

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

POLICY

How to control find_gaps

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 find_gaps:

policy.json

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

find_gaps 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.

CAP THIS TOOL →

Free to start. No card required.

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 find_gaps

What does the find_gaps tool do? +

Find terms mentioned but not explained. 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 find_gaps? +

Register the Claude Writer's Aid MCP server in PolicyLayer and add a rule for find_gaps: 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 find_gaps? +

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

Can I rate-limit find_gaps? +

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

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

find_gaps 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.

CHECK YOUR STACK →