What is sandbox-tuner?
sandbox-tuner is a Claude Code mod by dot-agi that explains each Claude Code sandbox block in plain words and turns recurring blocks into reviewed, one-press, undoable edits of your user settings. It is listed under Security and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | dot-agi |
| Repository | dot-agi/sandbox-tuner |
| Popularity | no public popularity data yet |
| Category | Security |
| Security | Review before installing (72/100) |
| Rank | #3,102 of 5,272 Claude Code mods; #353 in Security |
| License | MIT |
| Last commit | 2026-10-14 |
| Hooks | 5 events |
| Sees | Bash calls, Monitor calls, classic hooks |
| Draws on | AbovePrompt, Pane |
Is sandbox-tuner safe to install?
sandbox-tuner scores 72/100 on the MCPMods security check: Review before installing. Things to review: writes files or config; reads environment variables. It passed 5 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 no processes | Pass |
| Writes files or config | Review |
| Reads environment variables | Review |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Validator reported problems | Note |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.clock.after | |
$.clock.every | |
$.clock.now | |
$.clock.sleep | |
$.command.register | |
$.env.get | reads env vars |
$.fs.exists | reads files |
$.fs.list | reads files |
$.fs.read | reads files |
$.fs.stat | reads files |
$.fs.write | writes files |
$.session.cwd | |
$.session.id | |
$.session.root | |
$.session.surfaces | |
$.settings.read | reads settings |
$.state.get | |
$.state.set | |
$.store.delete | keeps its own state |
$.store.get | keeps its own state |
$.store.keys | keeps its own state |
$.store.set | keeps its own state |
$.ui.invalidate | draws interface |
$.ui.log | draws interface |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
$.ui.toast | draws interface |
How do I install sandbox-tuner?
- 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/dot-agi/sandbox-tuner claude plugin validate ./sandbox-tuner/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add dot-agi/sandbox-tuner && claude plugin install sandbox-tuner@sandbox-tuner
Or ask Claude to set it up
Paste this into Claude Code and it installs sandbox-tuner for you:
Install the "sandbox-tuner" Claude Code mod from https://github.com/dot-agi/sandbox-tuner. Run claude plugin validate on it first and show me what it can access before you enable it.