update_random_table

THE RISK

Medium Risk

Why update_random_table needs a policy

This tool creates or modifies data in a reversible manner (updating a random table used for RPG mechanics). It does not delete data irreversibly, execute arbitrary code, move money, or trigger external operations. The modification is confined to in-game state structures.

From the tool's definition Tool name is 'update_random_table' and description states 'Update a random table', which modifies existing data structures within the game state.

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

POLICY

How to control update_random_table

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

policy.json

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

update_random_table 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 DMCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More DMCP tools

Destructive cancel_event Cancel a scheduled event Destructive clear_pause_state Clear the saved pause state for a game. Use after successfully resuming to start fresh. Destructive clear_status_effects Remove all status effects from a character (or filter by type/name) Destructive delete_ability Delete an ability Destructive delete_audio Delete a stored audio file (removes file and database record) Destructive delete_character Delete a character permanently. This is IRREVERSIBLE and will remove the character and all Destructive delete_external_update Delete an external update entirely. Destructive delete_faction Delete a faction

All 204 DMCP tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

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 update_random_table

What does the update_random_table tool do? +

Update a random table. It is categorised as a Write tool in the DMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_random_table? +

Register the D MCP server in PolicyLayer and add a rule for update_random_table: 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 DMCP. Nothing to install.

What risk level is update_random_table? +

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

Can I rate-limit update_random_table? +

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

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

update_random_table is provided by the D MCP server (shawnrushefsky/dmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every DMCP tool call.

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

CHECK YOUR STACK →