update_activity_reply

Update a generic activity reply body. Body supports markdown.

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-activity-reply.md

WHAT IT DOES

What update_activity_reply does on Huly

AI agents use update_activity_reply 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_activity_reply is rated Medium

This tool modifies existing activity reply content (update operation), which is reversible and constitutes a Write action. Severity is medium because uncontrolled modifications to activity replies could spam, alter communication records, or spread misinformation, but the damage is reversible and typically limited to a single message or thread.

From the tool's definition Tool name 'update_activity_reply' and description 'Update a generic activity reply body' indicates modification of existing data. The mention of markdown support confirms this is content editing rather than deletion.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_activity_reply 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_activity_reply, this is the rule to start with:

update_activity_reply Rate-limited

update_activity_reply 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_activity_reply": {
      "limits": [
        {
          "counter": "update_activity_reply_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_activity_reply call is checked against it from then on.

FAQ

Questions about update_activity_reply

What does the update_activity_reply tool do? +

Update a generic activity reply body. Body supports markdown. 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_activity_reply? +

Register the Huly MCP server in PolicyLayer and add a rule for update_activity_reply: 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_activity_reply? +

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

Can I rate-limit update_activity_reply? +

Yes. Add a rate_limit block to the update_activity_reply 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_activity_reply completely? +

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

update_activity_reply 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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