Low Risk

get_missing_tenant_variables

Get missing tenant variables This tool retrieves tenant variables that are missing values. Optionally filter by tenant, project, or environment.

How to control get_missing_tenant_variables ↓

AI agents call get_missing_tenant_variables to retrieve information from Octopus Deploy MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

This tool performs a query/retrieval operation on deployment data without any modification, creation, deletion, or execution capabilities. It provides diagnostic information about missing tenant variables, which is consistent with the server's stated purpose of enabling 'inspection, query, and diagnosis' of Octopus Deploy instances.

From the tool's definition Tool description states 'retrieves tenant variables that are missing values' with optional filtering by tenant, project, or environment.

Documented attack patterns abuse exactly the kind of access get_missing_tenant_variables gives an agent:

PolicyLayer is an MCP gateway — it sits between your AI agents and Octopus Deploy MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_missing_tenant_variables:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_missing_tenant_variables": {}
  }
}

get_missing_tenant_variables is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Octopus Deploy MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Go deeper

What does the get_missing_tenant_variables tool do? +

Get missing tenant variables This tool retrieves tenant variables that are missing values. Optionally filter by tenant, project, or environment. It is categorised as a Read tool in the Octopus Deploy MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_missing_tenant_variables? +

Register the Octopus Deploy MCP Server MCP server in PolicyLayer and add a rule for get_missing_tenant_variables: 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 Octopus Deploy MCP Server. Nothing to install.

What risk level is get_missing_tenant_variables? +

get_missing_tenant_variables is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_missing_tenant_variables? +

Yes. Add a rate_limit block to the get_missing_tenant_variables 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.

How do I block get_missing_tenant_variables completely? +

Set action: deny in the PolicyLayer policy for get_missing_tenant_variables. 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.

What MCP server provides get_missing_tenant_variables? +

get_missing_tenant_variables is provided by the Octopus Deploy MCP Server MCP server (octopusdeploy/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Octopus Deploy MCP Server tool call.

Deterministic rules across all 30 Octopus Deploy MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

Free to start. No card required.

30 Octopus Deploy MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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