Update the name of a list. Use this tool to rename a list.
AI agents use update_list_name to create or update resources in Trello — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Trello environment.
This tool modifies metadata of a list (its name) but does not delete data or trigger external code execution. The change is reversible — a list name can be renamed again. While it affects shared board state (potentially impacting other team members' view), the blast radius is limited to cosmetic/organizational changes with no data loss or financial impact.
From the tool's definition Tool description states 'Update the name of a list' and 'rename a list' — these are modify operations on existing data structures.
Documented attack patterns abuse exactly the kind of access update_list_name gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Trello, and nothing reaches the server without passing your rules. This is the rule we recommend for update_list_name:
{
"version": "1",
"default": "deny",
"tools": {
"update_list_name": {
"limits": [
{
"counter": "update_list_name_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}update_list_name 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.
Update the name of a list. Use this tool to rename a list. It is categorised as a Write tool in the Trello MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Trello MCP server in PolicyLayer and add a rule for update_list_name: 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 Trello. Nothing to install.
update_list_name 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 update_list_name 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 update_list_name. 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.
update_list_name is provided by the Trello MCP server (v4lheru/trello-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Trello, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
76 Trello tools catalogued and risk-classified — across an index of 43,000+ MCP servers.