update_dm_message

Update a direct-message message. The

SERVERHuly SOURCE@firfi/huly-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-dearlordylord-huly-mcp/update-dm-message.md

WHAT IT DOES

What update_dm_message does on Huly

AI agents use update_dm_message to create or update resources in Huly, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Huly environment.

RISK

Why update_dm_message is rated Medium

This tool updates/modifies data (direct messages) reversibly. It falls under the Write category as it allows modification of existing messages rather than permanent deletion or irreversible changes. Severity is medium because an AI agent misusing this could modify communications between users, potentially causing confusion or impersonation risks, but the changes are technically reversible by further updates.

From the tool's definition update_dm_message: Update a direct-message message. This tool modifies existing direct messages without deleting them.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_dm_message safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Huly, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_dm_message, this is the rule to start with:

update_dm_message Rate-limited

update_dm_message 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.

View as policy code

policy.json

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

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Huly, apply this rule, and every update_dm_message call is checked against it from then on.

FAQ

Questions about update_dm_message

What does the update_dm_message tool do? +

Update a direct-message message. The. It is categorised as a Write tool in the Huly 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_dm_message? +

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

What risk level is update_dm_message? +

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

Can I rate-limit update_dm_message? +

Yes. Add a rate_limit block to the update_dm_message 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_dm_message completely? +

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

update_dm_message is provided by the Huly MCP server (@firfi/huly-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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