Get subscribers of a mailing list
AI agents call get_subscribers to retrieve information from Sitecore Send without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves subscriber data from a mailing list without creating, modifying, or deleting any records. It has no side effects and presents minimal risk - the main concern would be unauthorized access to subscriber PII, which is a data exposure risk rather than a capability risk of the tool itself. Classification as Read is appropriate.
From the tool's definition Tool name 'get_subscribers' and description 'Get subscribers of a mailing list' indicates data retrieval with no modification. The verb 'get' and context of querying subscriber information are characteristic of read operations.
Attacks that exploit this kind of access
Get subscribers of a mailing list. It is categorised as a Read tool in the Sitecore Send MCP Server, which means it retrieves data without modifying state.
Register the Sitecore Send MCP server in PolicyLayer and add a rule for get_subscribers: 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 Sitecore Send. Nothing to install.
get_subscribers 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 get_subscribers 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 get_subscribers. 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.
get_subscribers is provided by the Sitecore Send MCP server (izharikov/send-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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