wiki_reindex · Obsidian Mcp Fast MCP: Risk & Policy

WHAT IT DOES

What wiki_reindex does on Obsidian Mcp Fast

AI agents invoke wiki_reindex to trigger actions in Obsidian Mcp Fast. 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

Reindexing is an active operation that rebuilds internal indices of the vault. While not destructive (data is not deleted), it goes beyond passive data retrieval (Read) or reversible modifications (Write). It executes an external process whose side effects include modifying internal index structures.

From the tool's definition 'Manually trigger a full reindex' describes an operation that executes a reindexing process on the Obsidian vault, which is an external operation whose effects depend on the vault state and reindex implementation.

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 Obsidian Mcp Fast, so you can run agents against it safely.

FAQ

Questions about wiki_reindex

What does the wiki_reindex tool do? +

Manually trigger a full reindex. It is categorised as a Execute tool in the Obsidian Mcp Fast 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 Obsidian Mcp Fast 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 Obsidian Mcp Fast. 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 Obsidian Mcp Fast MCP server (thedavidquan01/obsidian-mcp-fast). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.