List all tenants (accounts) in Morpheus including the master tenant.
AI agents call list_tenants to retrieve information from Morpheus MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a query operation to enumerate tenants in the Morpheus system. It retrieves data with no side effects, creation, deletion, or execution of operations. The blast radius is minimal as it only exposes organizational structure information.
From the tool's definition Tool description explicitly states 'List all tenants' - a read-only operation that retrieves tenant information without modification. No parameters suggest filtering or returning sensitive data that would elevate severity beyond informational.
Attacks that exploit this kind of access
List all tenants (accounts) in Morpheus including the master tenant. It is categorised as a Read tool in the Morpheus MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Morpheus MCP Server MCP server in PolicyLayer and add a rule for list_tenants: 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 Morpheus MCP Server. Nothing to install.
list_tenants 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_tenants 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_tenants. 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_tenants is provided by the Morpheus MCP Server MCP server (nixndme/morpheus-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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