Set the due date for a card. Use this tool to add or update a deadline for a card.
AI agents use set_due_date 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.
Setting a due date is a Write operation because it creates or modifies card data (the due date field) reversibly—the action can be undone by clearing or changing the due date. It does not delete data (not Destructive), execute code (not Execute), involve financial transactions (not Financial), or retrieve data without side effects (not Read).
From the tool's definition Tool description states "Set the due date for a card. Use this tool to add or update a deadline for a card." This is a reversible modification operation that changes card metadata without deleting data or executing arbitrary operations.
Documented attack patterns abuse exactly the kind of access set_due_date 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 set_due_date:
{
"version": "1",
"default": "deny",
"tools": {
"set_due_date": {
"limits": [
{
"counter": "set_due_date_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}set_due_date 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.
Set the due date for a card. Use this tool to add or update a deadline for a card. 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 set_due_date: 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.
set_due_date 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 set_due_date 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 set_due_date. 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.
set_due_date 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.