# update_promo_code A write tool on the Mailchimp MCP MCP server. Agent View of the PolicyLayer registry record for `update_promo_code`. HTML page: https://policylayer.com/tools/damientilman-mailchimp-mcp-server/update-promo-code ## Facts - Tool: `update_promo_code` - Server: Mailchimp MCP (`damientilman/mailchimp-mcp-server`) — https://policylayer.com/tools/damientilman-mailchimp-mcp-server.md - Homepage: https://github.com/damientilman/mailchimp-mcp-server - 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_promo_code", "arguments": {} } } ``` ## Why update_promo_code is rated Medium The tool modifies or updates promotional code records, which is a Write operation (reversible data modification). Severity is medium because promo code updates could affect marketing campaigns and customer pricing, but there is no evidence the tool executes payments or irreversibly deletes data. From the tool's own definition: "Tool name 'update_promo_code' combined with context of Mailchimp MCP server (marketing/email platform managing campaigns and audiences) indicates modification of promotional code data. No destructive or financial transaction execution implied by name alone." ## Use case AI agents use update_promo_code to create or update resources in Mailchimp MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mailchimp MCP environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mailchimp MCP: ```json { "version": "1", "default": "deny", "tools": { "update_promo_code": { "limits": [ { "counter": "update_promo_code_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Mailchimp MCP (226) - `cancel_send` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/cancel-send.md - `delete_audience` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-audience.md - `delete_batch_webhook` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-batch-webhook.md - `delete_campaign` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-campaign.md - `delete_campaign_feedback` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-campaign-feedback.md - `delete_campaign_folder` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-campaign-folder.md - `delete_connected_site` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-connected-site.md - `delete_file` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-file.md - `delete_interest` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-interest.md - `delete_interest_category` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-interest-category.md - `delete_landing_page` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-landing-page.md - `delete_member` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-member.md - `delete_member_note` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-member-note.md - `delete_member_permanent` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-member-permanent.md - `delete_merge_field` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-merge-field.md - `delete_promo_code` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-promo-code.md - `delete_promo_rule` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-promo-rule.md - `delete_segment` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-segment.md - `delete_store` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store.md - `delete_store_cart` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-cart.md - `delete_store_customer` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-customer.md - `delete_store_order` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-order.md - `delete_store_order_line` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-order-line.md - `delete_store_product` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-product.md - `delete_store_product_image` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-product-image.md - `delete_store_product_variant` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-store-product-variant.md - `delete_template` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-template.md - `delete_template_folder` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-template-folder.md - `delete_verified_domain` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-verified-domain.md - `delete_webhook` — Destructive — https://policylayer.com/tools/damientilman-mailchimp-mcp-server/delete-webhook.md - …and 196 more: https://policylayer.com/tools/damientilman-mailchimp-mcp-server.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=damientilman-mailchimp-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/damientilman-mailchimp-mcp-server