attach_to_trello_card

THE RISK

Medium Risk

Why attach_to_trello_card needs a policy

Attaching files to Trello cards modifies the card's state by adding data/artifacts but does not delete or irreversibly destroy anything. This is a Write operation (creates a new relationship between card and attachment).

From the tool's definition Tool performs 'Attach a file or Solar2D simulator screenshot to a Trello card' — creates/adds an attachment to an existing Trello card, which is a reversible write operation.

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

POLICY

How to control attach_to_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 attach_to_trello_card:

policy.json

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

attach_to_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

More Solar2D MCP Server tools

Execute run_solar2d_project Run a Solar2D project in the simulator. Provide either a path to main.lua or a project dir Execute start_screenshot_recording Start recording screenshots from the Solar2D simulator. Screenshots are captured every 100 Execute stop_screenshot_recording Stop screenshot recording early. Execute preview_social_post Generate an HTML preview of a social media post showing how it will appear on each platfor Execute simulate_drag Simulate a drag/swipe gesture in the Solar2D simulator. Specify start and end bounding box Execute simulate_tap Simulate a tap/click in the Solar2D simulator. Specify a bounding box using percentages an Write comment_trello_card Add a comment to a Trello card. Useful for logging progress, results, or notes. Write configure_social_media Configure social media posting via Late (getlate.dev). Save your Late API key to enable po

All 22 Solar2D MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

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 attach_to_trello_card

What does the attach_to_trello_card tool do? +

Attach a file or Solar2D simulator screenshot to a Trello card. 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 attach_to_trello_card? +

Register the Solar2D MCP Server MCP server in PolicyLayer and add a rule for attach_to_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 attach_to_trello_card? +

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

Can I rate-limit attach_to_trello_card? +

Yes. Add a rate_limit block to the attach_to_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 attach_to_trello_card completely? +

Set action: deny in the PolicyLayer policy for attach_to_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 attach_to_trello_card? +

attach_to_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 →