set_budget

THE RISK

Medium Risk

Why set_budget needs a policy

This tool creates or modifies budget settings, which is reversible and has no destructive consequences. It does not execute arbitrary code, delete data, or move money—it merely stores a budget parameter for tracking purposes. Write category is appropriate. Severity is medium because misconfiguration could lead to budget tracking failures or alerts, but no financial transactions or data loss occur.

From the tool's definition Tool name 'set_budget' and description 'Stel een weekbudget in voor boodschappen' (Set a weekly budget for groceries) indicates the tool creates or modifies budget configuration data.

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

POLICY

How to control set_budget

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_budget": {
      "limits": [
        {
          "counter": "set_budget_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

set_budget 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.

Create a free account and register NL Supermarkt 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.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More NL Supermarkt MCP Server tools

Execute plan_winkelroute Optimaliseer route langs meerdere winkels voor je boodschappenlijst. Write bewaar_boodschappenlijst Bewaar een boodschappenlijst om later te hergebruiken. Write optimaliseer_boodschappenlijst Optimaliseer boodschappenlijst voor supermarkten en drogisten. Write plan_boodschappen Plan boodschappen met weekmenu en gedetailleerde boodschappenlijst. Write prijs_alert Stel een prijsalert in. Krijg melding wanneer product onder bepaalde prijs komt of in aanb Read budget_check Check of boodschappenlijst binnen budget past. Suggereert goedkopere alternatieven. Read check_alerts Check alle actieve prijsalerts en toon welke producten nu een goede deal zijn. Read bekijk_aanbiedingen Bekijk folder aanbiedingen van supermarkten EN drogisterijen. Categorieën: haarverzorging

All 20 NL Supermarkt MCP Server tools →

Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about set_budget

What does the set_budget tool do? +

Stel een weekbudget in voor boodschappen. It is categorised as a Write tool in the NL Supermarkt 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 set_budget? +

Register the NL Supermarkt MCP Server MCP server in PolicyLayer and add a rule for set_budget: 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 NL Supermarkt MCP Server. Nothing to install.

What risk level is set_budget? +

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

Can I rate-limit set_budget? +

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

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

set_budget is provided by the NL Supermarkt MCP Server MCP server (samvox1/nl-supermarkt-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every NL Supermarkt MCP Server tool call.

Start from NL Supermarkt 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 →