index-restore · MCP Index Notes MCP: Risk & Policy

WHAT IT DOES

What index-restore does on MCP Index Notes

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

WHY IT NEEDS A POLICY

Why index-restore needs a policy

This tool performs a Write operation because it imports/restores data into the note index, modifying the indexed state. It is not Destructive because the operation is reversible and does not irreversibly delete or overwrite existing data (typical restore semantics preserve or merge rather than force-overwrite).

From the tool's definition Tool description states 'Restore notes from a JSON backup file' — this is a restore/import operation that creates or modifies data by bulk-loading notes into the index.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

index-restore Rate-limited

index-restore 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": {
    "index-restore": {
      "limits": [
        {
          "counter": "index-restore_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 MCP Index Notes, so you can run agents against it safely.

FAQ

Questions about index-restore

What does the index-restore tool do? +

Restore notes from a JSON backup file. Returns imported count. It is categorised as a Write tool in the MCP Index Notes MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on index-restore? +

Register the MCP Index Notes MCP server in PolicyLayer and add a rule for index-restore: 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 MCP Index Notes. Nothing to install.

What risk level is index-restore? +

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

Can I rate-limit index-restore? +

Yes. Add a rate_limit block to the index-restore 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 index-restore completely? +

Set action: deny in the PolicyLayer policy for index-restore. 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 index-restore? +

index-restore is provided by the MCP Index Notes MCP server (vjsr007/mcp-index-notes). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.