update_image_prompt_template

THE RISK

Medium Risk

Why update_image_prompt_template needs a policy

This tool creates or modifies data (an image prompt template) in a reversible manner. It does not delete data (ruling out Destructive), execute arbitrary code (ruling out Execute), transfer funds (ruling out Financial), or query-only (ruling out Read).

From the tool's definition Tool name 'update_image_prompt_template' and description 'Update an existing image prompt template. Only specified fields are updated.' indicates modification of configuration/template data.

Documented attack patterns abuse exactly the kind of access update_image_prompt_template gives an agent:

POLICY

How to control update_image_prompt_template

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 update_image_prompt_template:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_image_prompt_template": {
      "limits": [
        {
          "counter": "update_image_prompt_template_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

update_image_prompt_template 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.

Create a free account and register DMCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about update_image_prompt_template

What does the update_image_prompt_template tool do? +

Update an existing image prompt template. Only specified fields are updated. It is categorised as a Write tool in the DMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_image_prompt_template? +

Register the D MCP server in PolicyLayer and add a rule for update_image_prompt_template: 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.

What risk level is update_image_prompt_template? +

update_image_prompt_template is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_image_prompt_template? +

Yes. Add a rate_limit block to the update_image_prompt_template 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.

How do I block update_image_prompt_template completely? +

Set action: deny in the PolicyLayer policy for update_image_prompt_template. 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.

What MCP server provides update_image_prompt_template? +

update_image_prompt_template 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.

Enforce policy on every DMCP tool call.

Start from DMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →