remove_layer

THE RISK

Critical Risk

Why remove_layer needs a policy

Removing a layer destroys the pixel art data contained in that layer. This action is not easily reversible (no mention of undo functionality), making it Destructive. The blast radius is medium since it affects one layer within a project rather than the entire project.

From the tool's definition 'Remove a layer from the project' — removing a layer irreversibly deletes that layer's pixel data from the project

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

POLICY

How to control remove_layer

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

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "remove_layer"
  ]
}

remove_layer disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Piskel 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.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Piskel MCP Server tools

Destructive delete_project Delete a project Destructive remove_frame Remove a frame from all layers Destructive remove_palette_color Remove a color from a palette Write clear_frame Clear all pixels in a frame Write erase_pixel Erase pixels (set to transparent) Write hue_shift_recolor Recolor sprites by shifting hue. Reads PNGs from an input folder, shifts pixels in a sourc Write add_frame Add a new frame to a layer Write add_layer Add a new layer to the project

All 45 Piskel MCP Server tools →

Destructive tools on other servers

Android Forensics ADB MCP Server create_full_backup 0xarchive web3_revoke_key Frida Game Hacking MCP clear_scan cPanel MCP Server clear_spam_box

Go deeper

Critical-risk tools in Piskel MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about remove_layer

What does the remove_layer tool do? +

Remove a layer from the project. It is categorised as a Destructive tool in the Piskel MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on remove_layer? +

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

What risk level is remove_layer? +

remove_layer is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit remove_layer? +

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

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

remove_layer is provided by the Piskel MCP Server MCP server (yafeiaa/piskel-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Piskel MCP Server tool call.

Start from Piskel 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 →