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AI agents use create_threaded_comment to create or update resources in ClickUp MCP Sedrver — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ClickUp MCP Sedrver environment.
This tool creates new data (a comment/reply) within ClickUp without modifying or deleting existing data. Comments are reversible—they can be edited or deleted later. The blast radius is medium because: (1) excessive commenting could clutter conversations and distract team members, (2) comments could inadvertently share sensitive information if not reviewed before posting, and (3) malicious actors could spam threads.
From the tool's definition Tool creates a new threaded comment (reply) to a parent comment. The verb 'create' and the function of adding a new comment to ClickUp indicates a reversible write operation.
Documented attack patterns abuse exactly the kind of access create_threaded_comment gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and ClickUp MCP Sedrver, and nothing reaches the server without passing your rules. This is the rule we recommend for create_threaded_comment:
{
"version": "1",
"default": "deny",
"tools": {
"create_threaded_comment": {
"limits": [
{
"counter": "create_threaded_comment_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_threaded_comment 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.
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Create a new threaded comment (reply) to a parent comment. Supports notification settings. It is categorised as a Write tool in the ClickUp MCP Sedrver MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ClickUp MCP Sedrver MCP server in PolicyLayer and add a rule for create_threaded_comment: 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 ClickUp MCP Sedrver. Nothing to install.
create_threaded_comment is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_threaded_comment 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.
Set action: deny in the PolicyLayer policy for create_threaded_comment. 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.
create_threaded_comment is provided by the ClickUp MCP Sedrver MCP server (nsxdavid/clickup-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 42 ClickUp MCP Sedrver tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
42 ClickUp MCP Sedrver tools catalogued and risk-classified — across an index of 42,500+ MCP servers.