update_channel_message

Update a channel message. Only the body can be modified.

SERVERHuly SOURCEdugynoo/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/dugynoo-huly-mcp/update-channel-message.md

WHAT IT DOES

What update_channel_message does on Huly

AI agents use update_channel_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_channel_message is rated Medium

This tool modifies message content within a channel but does not delete data or execute external commands. The update is reversible (the previous message body could theoretically be restored), making it a Write operation.

From the tool's definition Tool name 'update_channel_message' and description 'Update a channel message. Only the body can be modified.' indicate modification of existing data (message body) in a reversible manner.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_channel_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_channel_message, this is the rule to start with:

update_channel_message Rate-limited

update_channel_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_channel_message": {
      "limits": [
        {
          "counter": "update_channel_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_channel_message call is checked against it from then on.

FAQ

Questions about update_channel_message

What does the update_channel_message tool do? +

Update a channel message. Only the body can be modified. 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_channel_message? +

Register the Huly MCP server in PolicyLayer and add a rule for update_channel_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_channel_message? +

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

Can I rate-limit update_channel_message? +

Yes. Add a rate_limit block to the update_channel_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_channel_message completely? +

Set action: deny in the PolicyLayer policy for update_channel_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_channel_message? +

update_channel_message is provided by the Huly MCP server (dugynoo/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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