Apply Gaussian blur to a layer. Parameters: - radius_x: Horizontal blur radius in pixels (default 5.0) - radius_y: Vertical blur radius in pixels (default 5.0) - image_index: Target image index (default 0) - layer_name: Layer to blur; defaults to active layer Returns status dict.
AI agents use blur to create or update resources in Gimp — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Gimp environment.
Gaussian blur is a non-destructive image filter that modifies pixel values locally. It creates a reversible effect (the original can be recovered by undo or by re-editing), making it a Write operation rather than Destructive. The severity is low because blur operations have minimal blast radius—they only affect visual presentation of a specific layer and can be easily undone.
From the tool's definition The tool applies a Gaussian blur filter to a layer, modifying the image data in GIMP. This is a reversible image transformation that alters but does not delete or overwrite existing layers.
Documented attack patterns abuse exactly the kind of access blur 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 blur:
{
"version": "1",
"default": "deny",
"tools": {
"blur": {
"limits": [
{
"counter": "blur_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}blur 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.
Free to start. No card required.
Apply Gaussian blur to a layer. Parameters: - radius_x: Horizontal blur radius in pixels (default 5.0) - radius_y: Vertical blur radius in pixels (default 5.0) - image_index: Target image index (default 0) - layer_name: Layer to blur; defaults to active layer Returns status dict. It is categorised as a Write tool in the Gimp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Gimp MCP server in PolicyLayer and add a rule for blur: 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.
blur is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the blur 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 blur. 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.
blur 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.