create_price_rule

Create a price rule (the policy that governs discounts — percentage/fixed amount, prerequisites, entitlements, usage caps). Pair with create_discount_code to mint a usable code.

ServerMcp Ap2
CategoryWrite

How to control create_price_rule ↓

WHAT IT DOES

What create_price_rule does on Mcp Ap2

AI agents use create_price_rule to create or update resources in Mcp Ap2 — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Ap2 environment.

THE RISK

Medium Risk

Why create_price_rule needs a policy

This tool creates pricing policies (discounts, prerequisites, entitlements, usage caps) but does not directly move money or commit financial obligations—that would occur downstream when discount codes are applied to transactions. The action is reversible (rules can be updated or deleted).

From the tool's definition Tool creates a price rule that governs discounts, which modifies pricing policy data. Description states 'Create a price rule' and notes it should be 'Pair[ed] with create_discount_code to mint a usable code,' indicating data creation and reversible…

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

POLICY

How to control create_price_rule

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for create_price_rule:

policy.json

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

create_price_rule 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 Mcp Ap2 — 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 →

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EXPLORE

Related tools and policies

More Mcp Ap2 tools

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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 create_price_rule

What does the create_price_rule tool do? +

Create a price rule (the policy that governs discounts — percentage/fixed amount, prerequisites, entitlements, usage caps). Pair with create_discount_code to mint a usable code. It is categorised as a Write tool in the Mcp Ap2 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_price_rule? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for create_price_rule: 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 Mcp Ap2. Nothing to install.

What risk level is create_price_rule? +

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

Can I rate-limit create_price_rule? +

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

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

create_price_rule is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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