reset_list_index

THE RISK

Medium Risk

Why reset_list_index needs a policy

Resetting an index renumbers list items, which is a modification of data (a write operation). While it changes the indexing state, it does not irreversibly delete data — the list items themselves remain intact. However, renumbering could have downstream impacts on integrations or references that depend on specific index values, warranting medium severity.

From the tool's definition Reset list item index numbering

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

POLICY

How to control reset_list_index

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 reset_list_index:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "reset_list_index": {
      "limits": [
        {
          "counter": "reset_list_index_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

reset_list_index stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. 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

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about reset_list_index

What does the reset_list_index tool do? +

Reset list item index numbering. Note: requires model ID and list ID (name resolution not supported for this tool). It is categorised as a Write tool in the Anaplan MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on reset_list_index? +

Register the Anaplan MCP server in PolicyLayer and add a rule for reset_list_index: 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 reset_list_index? +

reset_list_index is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit reset_list_index? +

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

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

reset_list_index 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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