show_workspaces

THE RISK

Low Risk

Why show_workspaces needs a policy

This is a pure query/list operation that retrieves metadata about accessible workspaces. It performs no create, modify, delete, or execute operations. The blast radius is minimal—an agent misusing this tool could only enumerate workspace information, not alter data or trigger destructive actions.

From the tool's definition Tool name 'show_workspaces' and description 'List all accessible Anaplan workspaces' indicate a retrieval operation with no side effects. The optional tenantDetails parameter only adds informational content (size/quota info) without modifying state.

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

POLICY

How to control show_workspaces

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "show_workspaces": {}
  }
}

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

Create a free account and register Anaplan MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

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Destructive bulk_delete_models Bulk delete closed models (WARNING: irreversible). Models must be closed first. Destructive delete_file Delete a file from a model (WARNING: irreversible). Use show_files to find the fileId. Destructive delete_list_items Remove items from a list (WARNING: irreversible). Specify id or code for each item. Use ge Destructive delete_list_readrequest Delete a large volume list read request to free server resources. Always call this after d Destructive delete_view_readrequest Delete a large volume view read request to free server resources. Always call this after d Destructive run_delete Execute a delete action on a model. Use show_actions first to find the delete action ID. Destructive close_model Close (archive) a model. Requires workspace admin. Must be closed before bulk_delete_model Destructive set_currentperiod Set current period for a model (WARNING: may cause data loss if periods are removed). Use

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Go deeper

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FAQ

Questions about show_workspaces

What does the show_workspaces tool do? +

List all accessible Anaplan workspaces. Use tenantDetails=true for size/quota info. Start here, then use show_models. It is categorised as a Read tool in the Anaplan MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on show_workspaces? +

Register the Anaplan MCP server in PolicyLayer and add a rule for show_workspaces: 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 Anaplan MCP. Nothing to install.

What risk level is show_workspaces? +

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

Can I rate-limit show_workspaces? +

Yes. Add a rate_limit block to the show_workspaces 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 show_workspaces completely? +

Set action: deny in the PolicyLayer policy for show_workspaces. 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 show_workspaces? +

show_workspaces is provided by the Anaplan MCP server (larasrinath/anaplan-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Anaplan MCP tool call.

Start from Anaplan MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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