# update_global_source_element 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 Agent View of the PolicyLayer registry record for `update_global_source_element`. HTML page: https://policylayer.com/tools/webcake-storefront/update-global-source-element ## Facts - Tool: `update_global_source_element` - Server: Webcake Storefront (`webcake-storefront-mcp`) — https://policylayer.com/tools/webcake-storefront.md - Install: `npx -y webcake-storefront-mcp` - Homepage: git+https://github.com/vuluu2k/webcake-storefront-mcp.git - Risk category: Write (Medium risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "update_global_source_element", "arguments": {} } } ``` ## 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 own 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')." ## Use case 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. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Webcake Storefront: ```json { "version": "1", "default": "deny", "tools": { "update_global_source_element": { "limits": [ { "counter": "update_global_source_element_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Webcake Storefront (286) - `clear_page_draft` — Destructive — https://policylayer.com/tools/webcake-storefront/clear-page-draft.md - `delete_affiliate_accounts` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-affiliate-accounts.md - `delete_affiliate_products` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-affiliate-products.md - `delete_appointment_addresses` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-appointment-addresses.md - `delete_appointment_calendars` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-appointment-calendars.md - `delete_appointment_classifies` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-appointment-classifies.md - `delete_appointment_employees` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-appointment-employees.md - `delete_article` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-article.md - `delete_automation` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-automation.md - `delete_collection` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-collection.md - `delete_contacts` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-contacts.md - `delete_course` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-course.md - `delete_courses` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-courses.md - `delete_domain` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-domain.md - `delete_employees` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-employees.md - `delete_global_section` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-global-section.md - `delete_global_source` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-global-source.md - `delete_page` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-page.md - `delete_partner_feeds` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-partner-feeds.md - `delete_product` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-product.md - `delete_product_category` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-product-category.md - `delete_redirect_urls` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-redirect-urls.md - `delete_saved_filter` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-saved-filter.md - `delete_site_utms` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-site-utms.md - `delete_subscribers` — Destructive — https://policylayer.com/tools/webcake-storefront/delete-subscribers.md - `empty_media_trash` — Destructive — https://policylayer.com/tools/webcake-storefront/empty-media-trash.md - `remove_font` — Destructive — https://policylayer.com/tools/webcake-storefront/remove-font.md - `remove_font_group` — Destructive — https://policylayer.com/tools/webcake-storefront/remove-font-group.md - `remove_reviews` — Destructive — https://policylayer.com/tools/webcake-storefront/remove-reviews.md - `unblock_all_phone_customers` — Destructive — https://policylayer.com/tools/webcake-storefront/unblock-all-phone-customers.md - …and 256 more: https://policylayer.com/tools/webcake-storefront.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=webcake-storefront · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/webcake-storefront