update_legal_policy · Shopify Graphql MCP: Risk & Policy

WHAT IT DOES

What update_legal_policy does on Shopify Graphql

AI agents use update_legal_policy 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_legal_policy needs a policy

This tool modifies store configuration (legal policies) but the changes are non-destructive and reversible. While policy updates could have compliance implications, the tool itself performs a standard write operation. Severity is medium because incorrect policy modifications could create legal exposure for the store, but the blast radius is limited to policy documents rather than customer data or financial systems.

From the tool's definition Tool name 'update_legal_policy' combined with description 'Update a legal policy' indicates modification of existing policy data. The action is reversible (policies can be updated again) and does not involve deletion or financial transactions.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_legal_policy Rate-limited

update_legal_policy 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_legal_policy": {
      "limits": [
        {
          "counter": "update_legal_policy_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_legal_policy

What does the update_legal_policy tool do? +

Update a legal policy. 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_legal_policy? +

Register the Shopify Graphql MCP server in PolicyLayer and add a rule for update_legal_policy: 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_legal_policy? +

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

Can I rate-limit update_legal_policy? +

Yes. Add a rate_limit block to the update_legal_policy 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_legal_policy completely? +

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

update_legal_policy 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.