eventhouse_auto_optimize

THE RISK

High Risk

Why eventhouse_auto_optimize needs a policy

This tool automatically applies fixes across all KQL databases in an Eventhouse. It both analyzes and modifies configurations/settings at scale. While it may be partially reversible, the automated mass-application of fixes across all databases without per-change review makes it Execute-level risk.

From the tool's definition 'Scans a Fabric Eventhouse for all fixable issues across all KQL databases and applies fixes'

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

POLICY

How to control eventhouse_auto_optimize

PolicyLayer is an MCP gateway — it sits between your AI agents and Force Fabric MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for eventhouse_auto_optimize:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "eventhouse_auto_optimize": {
      "limits": [
        {
          "counter": "eventhouse_auto_optimize_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

eventhouse_auto_optimize 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.

Create a free account and register Force Fabric MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Force Fabric MCP Server tools

Destructive auth_logout Logout from Microsoft Fabric and clear cached credentials. Execute lakehouse_run_table_maintenance Run table maintenance (OPTIMIZE with V-Order, Z-ORDER, VACUUM) on a Fabric Lakehouse. Execute eventhouse_fix AUTO-FIX: Applies fixes to a Fabric Eventhouse. Execute eventhouse_fix_materialized_views AUTO-FIX: Diagnoses and repairs broken materialized views in a Fabric Eventhouse. Execute gateway_fix AUTO-FIX: Applies fixes to gateway and connection issues. Execute lakehouse_auto_optimize AUTO-OPTIMIZE: Discovers ALL Delta tables in a Lakehouse and applies fixes to every table Execute lakehouse_fix AUTO-FIX: Applies Spark SQL fixes to a Lakehouse via Livy API (no notebooks needed). Execute semantic_model_fix AUTO-FIX: Uses XMLA/TMSL commands for atomic per-object fixes (measures, columns, tables).

All 33 Force Fabric MCP Server tools →

Execute tools on other servers

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Go deeper

High-risk tools in Force Fabric MCP Server → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about eventhouse_auto_optimize

What does the eventhouse_auto_optimize tool do? +

AUTO-OPTIMIZE: Scans a Fabric Eventhouse for all fixable issues across all KQL databases and applies fixes. It is categorised as a Execute tool in the Force Fabric MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on eventhouse_auto_optimize? +

Register the Force Fabric MCP Server MCP server in PolicyLayer and add a rule for eventhouse_auto_optimize: 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 Force Fabric MCP Server. Nothing to install.

What risk level is eventhouse_auto_optimize? +

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

Can I rate-limit eventhouse_auto_optimize? +

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

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

eventhouse_auto_optimize is provided by the Force Fabric MCP Server MCP server (tmdaidevs/force-fabric-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Force Fabric MCP Server tool call.

Start from Force Fabric MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →