comment_trello_card

THE RISK

Medium Risk

Why comment_trello_card needs a policy

This tool creates new comment data on a Trello card, making it a Write category action. The severity is low because comments are easily reversible, low-impact metadata that don't affect core data integrity, financial systems, or trigger external operations. The action is scoped to a single Trello card and poses minimal risk if misused by an AI agent.

From the tool's definition The tool adds a comment to a Trello card, which is a create/modify operation that generates new data (a comment) on an existing card. The description explicitly states 'Add a comment' indicating a write action.

Documented attack patterns abuse exactly the kind of access comment_trello_card gives an agent:

POLICY

How to control comment_trello_card

PolicyLayer is an MCP gateway — it sits between your AI agents and Solar2D MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for comment_trello_card:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "comment_trello_card": {
      "limits": [
        {
          "counter": "comment_trello_card_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

comment_trello_card 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.

Create a free account and register Solar2D MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about comment_trello_card

What does the comment_trello_card tool do? +

Add a comment to a Trello card. Useful for logging progress, results, or notes. It is categorised as a Write tool in the Solar2D MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on comment_trello_card? +

Register the Solar2D MCP Server MCP server in PolicyLayer and add a rule for comment_trello_card: 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 Solar2D MCP Server. Nothing to install.

What risk level is comment_trello_card? +

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

Can I rate-limit comment_trello_card? +

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

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

comment_trello_card is provided by the Solar2D MCP Server MCP server (sensiblecoder/solar2d-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Solar2D MCP Server tool call.

Start from Solar2D MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →