wiki.reindex · Wiki MCP: Risk & Policy

WHAT IT DOES

What wiki.reindex does on WikiMCP

AI agents invoke wiki.reindex to trigger actions in WikiMCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why wiki.reindex needs a policy

This tool triggers a system-level operation (reindexing/rescanning all pages) rather than simply reading, writing, or deleting data. It initiates a potentially resource-intensive background process affecting the entire wiki. It is not destructive (no data is deleted) nor does it create/modify content directly, but it executes an operational action with side effects on the index state.

From the tool's definition 'Refresh the wiki index by rescanning all pages' — triggers an external operation (full rescan/reindex of all pages)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

wiki.reindex Rate-limited

wiki.reindex stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "wiki.reindex": {
      "limits": [
        {
          "counter": "wiki.reindex_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about wiki.reindex

What does the wiki.reindex tool do? +

Refresh the wiki index by rescanning all pages. Use after wiki content has been updated. It is categorised as a Execute tool in the WikiMCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on wiki.reindex? +

Register the Wiki MCP server in PolicyLayer and add a rule for wiki.reindex: 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 WikiMCP. Nothing to install.

What risk level is wiki.reindex? +

wiki.reindex is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit wiki.reindex? +

Yes. Add a rate_limit block to the wiki.reindex 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 wiki.reindex completely? +

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

wiki.reindex is provided by the Wiki MCP server (raydestar/wikimcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.