imhex_switch_file

THE RISK

Medium Risk

Why imhex_switch_file needs a policy

This tool changes the active file/provider context in the hex editor, which is a state modification (write) but does not delete or irreversibly alter data. It simply switches focus between already-open files. The blast radius is low since it only affects the UI/session state within ImHex and does not modify file contents.

From the tool's definition Switch the active file/provider in ImHex

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

POLICY

How to control imhex_switch_file

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

policy.json

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

imhex_switch_file 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 ImHex MCP Integration — 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

Related tools and policies

More ImHex MCP Integration tools

Destructive imhex_remove_bookmark Remove a bookmark by its ID Execute imhex_open_file Open a file in ImHex for analysis Write imhex_bookmark_add Add a bookmark to a specific location in the file Write imhex_close_file Close a specific file/provider in ImHex Write imhex_export_data Export a region of data to a file in various formats (binary, hex, or base64) Write imhex_export_search_results Export search results to CSV or JSON format with optional context bytes Write imhex_set_pattern_code Set pattern language code in ImHex for binary data parsing Write imhex_write_hex Write hex data to the currently open file

All 27 ImHex MCP Integration tools →

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 imhex_switch_file

What does the imhex_switch_file tool do? +

Switch the active file/provider in ImHex. It is categorised as a Write tool in the ImHex MCP Integration MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on imhex_switch_file? +

Register the ImHex MCP Integration MCP server in PolicyLayer and add a rule for imhex_switch_file: 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 ImHex MCP Integration. Nothing to install.

What risk level is imhex_switch_file? +

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

Can I rate-limit imhex_switch_file? +

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

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

imhex_switch_file is provided by the ImHex MCP Integration MCP server (jmpnop/imhexmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every ImHex MCP Integration tool call.

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

CHECK YOUR STACK →