adjust_stock · FacturaHub MCP Server MCP: Risk & Policy

WHAT IT DOES

What adjust_stock does on FacturaHub MCP Server

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

WHY IT NEEDS A POLICY

Why adjust_stock needs a policy

This tool modifies inventory stock levels — either adding or subtracting quantities. While it can reduce stock (negative numbers), inventory adjustments are generally reversible by applying a counter-adjustment, placing this in Write rather than Destructive.

From the tool's definition Adjust inventory stock for a catalog item. Use positive numbers to add stock (restock) and negative numbers to remove stock (damage, loss, correction).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

adjust_stock Rate-limited

adjust_stock 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": {
    "adjust_stock": {
      "limits": [
        {
          "counter": "adjust_stock_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 FacturaHub MCP Server, so you can run agents against it safely.

FAQ

Questions about adjust_stock

What does the adjust_stock tool do? +

[FacturaHub] Adjust inventory stock for a catalog item. Use positive numbers to add stock (restock) and negative numbers to remove stock (damage, loss, correction). For sales, use add_movement instead. It is categorised as a Write tool in the FacturaHub MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on adjust_stock? +

Register the FacturaHub MCP Server MCP server in PolicyLayer and add a rule for adjust_stock: 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 FacturaHub MCP Server. Nothing to install.

What risk level is adjust_stock? +

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

Can I rate-limit adjust_stock? +

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

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

adjust_stock is provided by the FacturaHub MCP Server MCP server (santy1422/facturahub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.