update_payment_terms · Shopify Graphql MCP: Risk & Policy

WHAT IT DOES

What update_payment_terms does on Shopify Graphql

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

WHY IT NEEDS A POLICY

Why update_payment_terms needs a policy

Updating payment terms is a reversible write operation that modifies financial agreement conditions on orders or customers. While it touches financial data, it does not move money or commit financial obligations directly — it only changes the terms under which payment is expected. However, misconfiguration could lead to incorrect billing terms being applied broadly, hence high severity.

From the tool's definition "Update existing payment terms" — modifies payment terms on existing records

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_payment_terms Rate-limited

update_payment_terms 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": {
    "update_payment_terms": {
      "limits": [
        {
          "counter": "update_payment_terms_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 Shopify Graphql, so you can run agents against it safely.

FAQ

Questions about update_payment_terms

What does the update_payment_terms tool do? +

Update existing payment terms. It is categorised as a Write tool in the Shopify Graphql MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_payment_terms? +

Register the Shopify Graphql MCP server in PolicyLayer and add a rule for update_payment_terms: 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 Shopify Graphql. Nothing to install.

What risk level is update_payment_terms? +

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

Can I rate-limit update_payment_terms? +

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

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

update_payment_terms is provided by the Shopify Graphql MCP server (uvu-store/shopify-graphql-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.