AI agents invoke select_rectangle to trigger actions in Gimp. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Based on the name, this tool likely creates a rectangular selection in GIMP, which is an operation that triggers an action in an external application (GIMP). It doesn't read data, write/create files, or destroy anything — it executes a selection operation in the image editor. Confidence is low due to empty description.
From the tool's definition Tool name 'select_rectangle' on a GIMP MCP server; description is empty and uninformative.
Documented attack patterns abuse exactly the kind of access select_rectangle 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 select_rectangle:
{
"version": "1",
"default": "deny",
"tools": {
"select_rectangle": {
"limits": [
{
"counter": "select_rectangle_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}select_rectangle stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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select_rectangle. It is categorised as a Execute tool in the Gimp MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Gimp MCP server in PolicyLayer and add a rule for select_rectangle: 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.
select_rectangle is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the select_rectangle 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 select_rectangle. 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.
select_rectangle 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.
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79 Gimp tools catalogued and risk-classified — across an index of 43,000+ MCP servers.