Create a new comment on a ClickUp list. Supports optional assignee and notification settings.
AI agents use create_list_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 a new comment, which is a reversible write operation. Comments can be edited or deleted, and creating them does not destroy data or execute arbitrary code. The blast radius is minimal—worst case, unwanted comments could be posted to a list, but these are trivially removable and cause no permanent damage or financial impact.
From the tool's definition Tool name 'create_list_comment' and description 'Create a new comment on a ClickUp list' explicitly indicate creation of new content (a comment).
Documented attack patterns abuse exactly the kind of access create_list_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_list_comment:
{
"version": "1",
"default": "deny",
"tools": {
"create_list_comment": {
"limits": [
{
"counter": "create_list_comment_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_list_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.
Free to start. No card required.
Create a new comment on a ClickUp list. Supports optional assignee and 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_list_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_list_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_list_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_list_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_list_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.