What is query-guard?
query-guard is a Claude Code mod by nu0ma that asks before Claude runs destructive or slow-looking SQL through a DB CLI: DELETE, UPDATE without WHERE, DROP, TRUNCATE, full scans and cartesian joins. It is listed under Security and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | nu0ma |
| Repository | nu0ma/query-guard |
| Popularity | no public popularity data yet |
| Category | Security |
| Security | Low risk (100/100) |
| Rank | #4,176 of 5,272 Claude Code mods; #434 in Security |
| License | MIT |
| Last commit | 2026-10-03 |
| Hooks | 1 events |
| Sees | Bash calls |
| Draws on | nothing |
Is query-guard safe to install?
query-guard scores 100/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 8 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 no files or config | Pass |
| Doesn't read environment variables | Pass |
| 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 |
|---|---|
$.ui.ask | draws interface |
$.ui.toast | draws interface |
How do I install query-guard?
- 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/nu0ma/query-guard claude plugin validate ./query-guard/plugins/query-guard
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add nu0ma/query-guard && claude plugin install query-guard@nu0ma
Or ask Claude to set it up
Paste this into Claude Code and it installs query-guard for you:
Install the "query-guard" Claude Code mod from https://github.com/nu0ma/query-guard/tree/main/plugins/query-guard. Run claude plugin validate on it first and show me what it can access before you enable it.