Get the image of a diagram by its ID in StarUML.
AI agents call get_diagram_image_by_id to retrieve information from StarUML 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/fetches an image artifact associated with a diagram ID. It performs a query operation that does not create, modify, delete, execute code, or trigger external operations. The action is read-only and returns data without changing state.
From the tool's definition Tool name 'get_diagram_image_by_id' and description 'Get the image of a diagram by its ID in StarUML' indicate a retrieval operation with no modifications or side effects.
Documented attack patterns abuse exactly the kind of access get_diagram_image_by_id gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and StarUML MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_diagram_image_by_id:
{
"version": "1",
"default": "deny",
"tools": {
"get_diagram_image_by_id": {}
}
}get_diagram_image_by_id is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the image of a diagram by its ID in StarUML. It is categorised as a Read tool in the StarUML MCP Server MCP Server, which means it retrieves data without modifying state.
Register the StarUML MCP Server MCP server in PolicyLayer and add a rule for get_diagram_image_by_id: 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 StarUML MCP Server. Nothing to install.
get_diagram_image_by_id 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_diagram_image_by_id 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_diagram_image_by_id. 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_diagram_image_by_id is provided by the StarUML MCP Server MCP server (staruml/staruml-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from StarUML 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.
4 StarUML MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.