Get the color of a single pixel. Parameters: - x, y: Pixel coordinates - image_index: Target image index (default 0) - layer_name: Layer to sample from; defaults to active layer Returns: {color_hex, color_rgb: [r, g, b], alpha}
AI agents call get_pixel_color to retrieve information from Gimp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query operation that retrieves data (pixel color information) without any side effects on the image or system. It does not modify, delete, or execute any operations. The confidence is high because the functionality is clearly informational and the description is explicit about the read-only nature of the operation.
From the tool's definition Tool retrieves pixel color information at specified coordinates and returns color values (hex, RGB, alpha). The description explicitly states 'Get the color' with parameters for reading from an image layer.
Documented attack patterns abuse exactly the kind of access get_pixel_color gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Gimp, and nothing reaches the server without passing your rules. This is the rule we recommend for get_pixel_color:
{
"version": "1",
"default": "deny",
"tools": {
"get_pixel_color": {}
}
}get_pixel_color is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get the color of a single pixel. Parameters: - x, y: Pixel coordinates - image_index: Target image index (default 0) - layer_name: Layer to sample from; defaults to active layer Returns: {color_hex, color_rgb: [r, g, b], alpha}. It is categorised as a Read tool in the Gimp MCP Server, which means it retrieves data without modifying state.
Register the Gimp MCP server in PolicyLayer and add a rule for get_pixel_color: 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 Gimp. Nothing to install.
get_pixel_color 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_pixel_color 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_pixel_color. 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_pixel_color is provided by the Gimp MCP server (maorcc/gimp-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Gimp, 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.
79 Gimp tools catalogued and risk-classified — across an index of 43,000+ MCP servers.