update_global_source_element

SERVERWebcake Storefront SOURCEwebcake-storefront-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/webcake-storefront/update-global-source-element.md

WHAT IT DOES

What update_global_source_element does on Webcake Storefront

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

RISK

Why update_global_source_element is rated Medium

This tool creates or modifies data (updates global source elements) and is inherently reversible—changes can be undone by subsequent updates. The built-in dry-run confirmation flow and emphasis on user approval lower the severity from high to medium, as the safeguards reduce accidental misuse risk. It does not execute arbitrary code, delete data irreversibly, or move funds, so Write is the appropriate category.

From the tool's definition update_global_source_element modifies elements within a global source with explicit language around applying changes ('call again with dry_run=false to apply').

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_global_source_element safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Webcake Storefront, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_global_source_element, this is the rule to start with:

update_global_source_element Rate-limited

update_global_source_element 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_global_source_element": {
      "limits": [
        {
          "counter": "update_global_source_element_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Webcake Storefront, apply this rule, and every update_global_source_element call is checked against it from then on.

FAQ

Questions about update_global_source_element

What does the update_global_source_element tool do? +

Update a single element within a global source. Two-step process: STEP 1: Call with dry_run=true (default) → returns diff of what will change. STEP 2: Show the diff to the user and ask for confirmation. NEVER proceed without explicit user approval. STEP 3: Only after user confirms, call again with dry_run=false to apply. IMPORTANT: You MUST show the diff to the user and get explicit. It is categorised as a Write tool in the Webcake Storefront 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_global_source_element? +

Register the Webcake Storefront MCP server in PolicyLayer and add a rule for update_global_source_element: 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 Webcake Storefront. Nothing to install.

What risk level is update_global_source_element? +

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

Can I rate-limit update_global_source_element? +

Yes. Add a rate_limit block to the update_global_source_element 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_global_source_element completely? +

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

update_global_source_element is provided by the Webcake Storefront MCP server (webcake-storefront-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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