AI agents call get_frame_data to retrieve information from Piskel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries pixel data from an existing frame in the Piskel project. It performs a read-only operation that returns data without creating, modifying, deleting, executing code, or committing financial actions. The minimal blast radius from misuse (exposure of pixel art data that would already be visible in the project) confirms low severity.
From the tool's definition Tool name 'get_frame_data' and description 'Get all pixel data from a frame as a 2D array' indicate retrieval of existing frame data with no modification or side effects.
Documented attack patterns abuse exactly the kind of access get_frame_data gives an agent:
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 get_frame_data:
{
"version": "1",
"default": "deny",
"tools": {
"get_frame_data": {}
}
}get_frame_data is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all pixel data from a frame as a 2D array. It is categorised as a Read tool in the Piskel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Piskel MCP Server MCP server in PolicyLayer and add a rule for get_frame_data: 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.
get_frame_data is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_frame_data 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 get_frame_data. 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.
get_frame_data 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.
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.
Free to start. No card required.
45 Piskel MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.