continue_image_session · Gemini Image MCP: Risk & Policy

WHAT IT DOES

What continue_image_session does on Gemini Image MCP

AI agents use continue_image_session to create or update resources in Gemini Image MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Gemini Image MCP environment.

WHY IT NEEDS A POLICY

Why continue_image_session needs a policy

This tool modifies/edits images within an existing session, which is a reversible write operation. It generates or transforms image data but does not delete or irreversibly destroy anything. Session-based image editing is a Write-category action with medium severity as it could produce unintended image modifications.

From the tool's definition '기존 멀티턴 세션을 이어서 이미지를 편집합니다. 이전 대화 맥락이 유지됩니다.' (Continues an existing multi-turn session to edit images. Previous conversation context is maintained.)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

continue_image_session Rate-limited

continue_image_session 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.

View as policy code

policy.json

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

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Gemini Image MCP, so you can run agents against it safely.

FAQ

Questions about continue_image_session

What does the continue_image_session tool do? +

기존 멀티턴 세션을 이어서 이미지를 편집합니다. 이전 대화 맥락이 유지됩니다. It is categorised as a Write tool in the Gemini Image MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on continue_image_session? +

Register the Gemini Image MCP server in PolicyLayer and add a rule for continue_image_session: 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 Gemini Image MCP. Nothing to install.

What risk level is continue_image_session? +

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

Can I rate-limit continue_image_session? +

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

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

continue_image_session is provided by the Gemini Image MCP server (jk7g14/gemini-image-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.