Claude Code mod

hw-write-guard

Asks before Claude runs or writes code that drives hardware: nidaqmx DO/AO writes, pymodbus coil/register writes, pyserial writes, MQTT publishes to printer topics.

Guard & safety mods Plugin marketplaceValidates on Claude Code 2.1.316 Source

Install

Inside Claude Code
/plugin marketplace add aecheman27-gif/claude-mods
/plugin install hw-write-guard@my-claude-mods

Mods install like plugins. Run /reload-plugins or start a new session to load it.

What it can access

Reach
L1Reads: reads files, reads mod state, persists state, draws
Sees
Bash|PowerShell|Monitor|Write|Edit|NotebookEdit calls
Hooks
session.startcommand.runtool.call

From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.

How Claude Code mods work

  • A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
  • It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
  • Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
  • Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Claude Code docs

Details

Repository
aecheman27-gif/claude-mods
Folder
hw-write-guard
Marketplace
my-claude-mods
Author
aecheman27-gif
Type
Guard & safety mods
Last updated
16 October 2026
Listed in
awesome-claude-code-mods

FAQ

What is hw-write-guard?

Asks before Claude runs or writes code that drives hardware: nidaqmx DO/AO writes, pymodbus coil/register writes, pyserial writes, MQTT publishes to printer topics. It is a mod for Claude Code, from aecheman27-gif/claude-mods on GitHub.

What can the hw-write-guard mod access?

Its widest reach is "reads" (reads files, reads mod state, persists state, draws). It sees Bash|PowerShell|Monitor|Write|Edit|NotebookEdit calls. Like any mod, it runs with your permissions.

How do I install hw-write-guard?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add aecheman27-gif/claude-mods and then /plugin install hw-write-guard@my-claude-mods.

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