AI agents call sendook_list_messages to retrieve information from Sendook without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves email messages, which is a read-only operation with no data modification. Severity is medium rather than low because email contents may contain sensitive information; if an agent were compromised, it could exfiltrate email data, but the risk is limited to information disclosure rather than destructive or financial harm.
From the tool's definition Tool name 'sendook_list_messages' indicates a list/retrieve operation on messages within the Sendook email platform.
Attacks that exploit this kind of access
sendook_list_messages. It is categorised as a Read tool in the Sendook MCP Server, which means it retrieves data without modifying state.
Register the Sendook MCP server in PolicyLayer and add a rule for sendook_list_messages: 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 Sendook. Nothing to install.
sendook_list_messages 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 sendook_list_messages 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 sendook_list_messages. 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.
sendook_list_messages is provided by the Sendook MCP server (streamlinedstartup/sendook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
sendook_list_messages is one line of Sendook's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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