Get a paginated list of unconfirmed subscribers for a list
AI agents call get_unconfirmed_subscribers to retrieve information from Campaign Monitor MCP 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 in a read-only manner. It does not create, modify, delete, execute external operations, or involve financial transactions. The paginated list query is a standard Read operation with minimal security risk—exposure of unconfirmed subscriber lists has limited impact compared to confirmed/active subscriber data, and the information is already within the user's own Campaign Monitor…
From the tool's definition Tool name 'get_unconfirmed_subscribers' and description 'Get a paginated list of unconfirmed subscribers for a list' indicate a retrieval operation that queries data without modification or side effects.
Attacks that exploit this kind of access
Get a paginated list of unconfirmed subscribers for a list. It is categorised as a Read tool in the Campaign Monitor MCP MCP Server, which means it retrieves data without modifying state.
Register the Campaign Monitor MCP server in PolicyLayer and add a rule for get_unconfirmed_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 Campaign Monitor MCP. Nothing to install.
get_unconfirmed_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_unconfirmed_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_unconfirmed_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_unconfirmed_subscribers is provided by the Campaign Monitor MCP server (pauliowest/cmon-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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