Build an image generation prompt from an entity
AI agents call build_image_prompt to retrieve information from DMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool constructs/generates a prompt string from game entity data. It reads entity information and produces a text prompt as output. No data is modified, deleted, or executed — it's a read/transform operation with no side effects.
From the tool's definition Build an image generation prompt from an entity
Documented attack patterns abuse exactly the kind of access build_image_prompt gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and DMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for build_image_prompt:
{
"version": "1",
"default": "deny",
"tools": {
"build_image_prompt": {}
}
}build_image_prompt is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Build an image generation prompt from an entity. It is categorised as a Read tool in the DMCP MCP Server, which means it retrieves data without modifying state.
Register the D MCP server in PolicyLayer and add a rule for build_image_prompt: 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 DMCP. Nothing to install.
build_image_prompt 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 build_image_prompt 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 build_image_prompt. 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.
build_image_prompt is provided by the D MCP server (shawnrushefsky/dmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from DMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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204 DMCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.