view_image

THE RISK

Low Risk

Why view_image needs a policy

This tool only accesses and displays an existing image file. It does not create, modify, delete, execute code, or move money. The action is purely informational with no destructive or executable consequences. Severity is low because opening an image viewer has minimal blast radius even if called unexpectedly.

From the tool's definition Tool name is 'view_image' and description states it 'Open a stored image in the default image viewer' — a read-only operation that retrieves and displays data without modification or side effects.

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

POLICY

How to control view_image

PolicyLayer is an MCP gateway — it sits between your AI agents and EverArt Forge MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for view_image:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "view_image": {}
  }
}

view_image is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

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

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More EverArt Forge MCP Server tools

Write generate_image Generate images using EverArt Models, optimized for web development. Read list_images List all stored images

All 3 EverArt Forge MCP Server tools →

Read 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.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about view_image

What does the view_image tool do? +

Open a stored image in the default image viewer. It is categorised as a Read tool in the EverArt Forge MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on view_image? +

Register the EverArt Forge MCP Server MCP server in PolicyLayer and add a rule for view_image: 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 EverArt Forge MCP Server. Nothing to install.

What risk level is view_image? +

view_image is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit view_image? +

Yes. Add a rate_limit block to the view_image 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 view_image completely? +

Set action: deny in the PolicyLayer policy for view_image. 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 view_image? +

view_image is provided by the EverArt Forge MCP Server MCP server (nickbaumann98/everart-forge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every EverArt Forge MCP Server tool call.

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

CHECK YOUR STACK →