reindex_file · Ue Codegraph MCP: Risk & Policy

WHAT IT DOES

What reindex_file does on Ue Codegraph

AI agents use reindex_file to create or update resources in Ue Codegraph — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ue Codegraph environment.

WHY IT NEEDS A POLICY

Why reindex_file needs a policy

This tool modifies the local SQLite database by updating the index for a specific file. It creates or overwrites existing index entries, which is a reversible write operation. It does not delete data permanently (the index can be rebuilt), nor does it execute code or move money. Misuse could corrupt the index for a file but the original source file remains intact.

From the tool's definition Re-index a single file (useful after file changes)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reindex_file Rate-limited

reindex_file 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": {
    "reindex_file": {
      "limits": [
        {
          "counter": "reindex_file_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 Ue Codegraph, so you can run agents against it safely.

FAQ

Questions about reindex_file

What does the reindex_file tool do? +

Re-index a single file (useful after file changes). It is categorised as a Write tool in the Ue Codegraph MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on reindex_file? +

Register the Ue Codegraph MCP server in PolicyLayer and add a rule for reindex_file: 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 Ue Codegraph. Nothing to install.

What risk level is reindex_file? +

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

Can I rate-limit reindex_file? +

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

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

reindex_file is provided by the Ue Codegraph MCP server (yomenstyle/ue-codegraph-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.