TRELLO_ADD_SESSIONS

Creates or updates a Trello user session, optionally linking it to a specific board for status updates and setting the user's activity status.

SERVERTrello SOURCEmcp-server-trello

Medium RISK CLASS

Category Write

Parameters 20 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/trello/trello-add-sessions.md

WHAT IT DOES

What TRELLO_ADD_SESSIONS does on Trello

AI agents use TRELLO_ADD_SESSIONS 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.

Parameter	Type	Required	Description
`status`	string	—	Sets the user's current activity status for the session.
`idBoard`	string	—	The ID of the Trello board to associate with this session for status updates.

Parameters from the server's own tool schema.

RISK

Why TRELLO_ADD_SESSIONS is rated Medium

This tool modifies session state—a reversible operation that creates or updates data. While it affects user activity tracking and could potentially be misused to impersonate a user or spam activity updates across boards, it does not delete data (not Destructive), execute arbitrary code (not Execute), move money (not Financial), or perform read-only queries (not Read).

From the tool's definition Tool description states it 'Creates or updates a Trello user session', which are reversible write operations. The session can be modified (updated) and linked to a board for status tracking.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs TRELLO_ADD_SESSIONS safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Trello, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For TRELLO_ADD_SESSIONS, this is the rule to start with:

TRELLO_ADD_SESSIONS Rate-limited

TRELLO_ADD_SESSIONS 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": {
    "TRELLO_ADD_SESSIONS": {
      "limits": [
        {
          "counter": "trello_add_sessions_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 Trello, apply this rule, and every TRELLO_ADD_SESSIONS call is checked against it from then on.

FAQ

Questions about TRELLO_ADD_SESSIONS

What does the TRELLO_ADD_SESSIONS tool do? +

Creates or updates a Trello user session, optionally linking it to a specific board for status updates and setting the user's activity status. 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.

What parameters does TRELLO_ADD_SESSIONS accept? +

TRELLO_ADD_SESSIONS accepts 2 parameters: status, idBoard. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on TRELLO_ADD_SESSIONS? +

Register the Trello MCP server in PolicyLayer and add a rule for TRELLO_ADD_SESSIONS: 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.

What risk level is TRELLO_ADD_SESSIONS? +

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

Can I rate-limit TRELLO_ADD_SESSIONS? +

Yes. Add a rate_limit block to the TRELLO_ADD_SESSIONS 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 TRELLO_ADD_SESSIONS completely? +

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

TRELLO_ADD_SESSIONS is provided by the Trello MCP server (mcp-server-trello). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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