List all email templates from Resend. Returns template names, statuses, and aliases. Don
AI agents call list-templates to retrieve information from Email Sending MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists existing email templates without modifying, deleting, or executing any operations. It is a straightforward data retrieval function that presents no risk of unintended modification or destruction. The severity is low because even if an AI agent misuses this tool, it can only access metadata about templates that already exist.
From the tool's definition Tool name 'list-templates' and description 'List all email templates from Resend. Returns template names, statuses, and aliases' indicate a query/retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access list-templates gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Email Sending MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for list-templates:
{
"version": "1",
"default": "deny",
"tools": {
"list-templates": {}
}
}list-templates is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all email templates from Resend. Returns template names, statuses, and aliases. Don. It is categorised as a Read tool in the Email Sending MCP MCP Server, which means it retrieves data without modifying state.
Register the Email Sending MCP server in PolicyLayer and add a rule for list-templates: 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 Email Sending MCP. Nothing to install.
list-templates 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-templates 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-templates. 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-templates is provided by the Email Sending MCP server (resend/resend-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 77 Email Sending MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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77 Email Sending MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.