list_promo_rules
A read tool on the Mailchimp MCP server.
This record as markdown: /tools/damientilman-mailchimp-mcp-server/list-promo-rules.md
What list_promo_rules does on Mailchimp MCP
AI agents call list_promo_rules to retrieve information from Mailchimp MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_promo_rules is rated Low
The 'list' prefix is a strong indicator of a Read operation that retrieves existing promotional rules from Mailchimp without creating, modifying, or deleting data. This has minimal blast radius if misused—an agent listing promo rules cannot cause financial harm, data loss, or external operations.
From the tool's definition Tool name 'list_promo_rules' uses the 'list' verb, which typically retrieves or queries data without modification. The tool description is empty, but the naming convention strongly suggests a retrieval operation for promotional rules/data within Mailchimp.
Attacks that exploit this kind of access
The rule that runs list_promo_rules safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mailchimp MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_promo_rules, this is the rule to start with:
list_promo_rules is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Mailchimp MCP, apply this rule, and every list_promo_rules call is checked against it from then on.
Questions about list_promo_rules
list_promo_rules is a read tool on the Mailchimp MCP server. It is categorised as a Read tool in the Mailchimp MCP MCP Server, which means it retrieves data without modifying state.
Register the Mailchimp MCP server in PolicyLayer and add a rule for list_promo_rules: 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 Mailchimp MCP. Nothing to install.
list_promo_rules is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_promo_rules 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.
Set action: deny in the PolicyLayer policy for list_promo_rules. 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.
list_promo_rules is provided by the Mailchimp MCP server (damientilman/mailchimp-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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