What is tool-visibility-controller?
tool-visibility-controller is a Claude Code mod by rezzminator that claude Code plugin for per-agent tool visibility — hide and refuse subagents, skills, MCP and built-in tools per loop. It is listed under Agents & automation and has 1 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | rezzminator |
| Repository | rezzminator/tool-visibility-controller |
| Popularity | 1 GitHub stars |
| Category | Agents & automation |
| Security | Review before installing (76/100) |
| Rank | #2,267 of 5,272 Claude Code mods; #163 in Agents & automation |
| License | MIT |
| Last commit | 2026-10-18 |
| Hooks | 7 events |
| Sees | classic hooks, every tool call, subagent spawns |
| Draws on | nothing |
Is tool-visibility-controller safe to install?
tool-visibility-controller scores 76/100 on the MCPMods security check: Review before installing. Things to review: starts processes outside the sandbox; reads environment variables. It passed 6 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts processes outside the sandbox | Review |
| Writes no files or config | Pass |
| Reads environment variables | Review |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.agent.list | |
$.clock.after | |
$.clock.now | |
$.env.get | reads env vars |
$.fs.exists | reads files |
$.fs.list | reads files |
$.fs.read | reads files |
$.process.run | runs processes |
$.session.id | |
$.session.root | |
$.tool.list | |
$.ui.log | draws interface |
How do I install tool-visibility-controller?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/rezzminator/tool-visibility-controller claude plugin validate ./tool-visibility-controller/plugins/tool-visibility-controller
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/rezzminator/tool-visibility-controller && claude --plugin-dir ./tool-visibility-controller/plugins/tool-visibility-controller
Or ask Claude to set it up
Paste this into Claude Code and it installs tool-visibility-controller for you:
Install the "tool-visibility-controller" Claude Code mod from https://github.com/rezzminator/tool-visibility-controller/tree/develop/plugins/tool-visibility-controller. Run claude plugin validate on it first and show me what it can access before you enable it.