What is mirror-pane?
mirror-pane is a Claude Code mod by ccdwyer that before/after simulator screenshots on the same step as a UI edit, side by side in a pane, with a changed-pixel percentage and pinned baselines. It is listed under While you wait and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | ccdwyer |
| Repository | ccdwyer/mirror-pane |
| Popularity | no public popularity data yet |
| Category | While you wait |
| Security | Review before installing (76/100) |
| Rank | #2,854 of 5,272 Claude Code mods; #90 in While you wait |
| License | MIT |
| Last commit | 2026-10-02 |
| Hooks | 4 events |
| Sees | every tool call |
| Draws on | Pane, AbovePrompt |
Is mirror-pane safe to install?
mirror-pane 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 |
|---|---|
$.clock.every | |
$.clock.now | |
$.command.register | |
$.env.get | reads env vars |
$.fs.stat | reads files |
$.process.run | runs processes |
$.session.cwd | |
$.session.id | |
$.state.get | |
$.state.set | |
$.store.delete | keeps its own state |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
$.ui.status | draws interface |
$.ui.toast | draws interface |
How do I install mirror-pane?
- 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/ccdwyer/mirror-pane claude plugin validate ./mirror-pane/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/ccdwyer/mirror-pane && claude --plugin-dir ./mirror-pane/.
Or ask Claude to set it up
Paste this into Claude Code and it installs mirror-pane for you:
Install the "mirror-pane" Claude Code mod from https://github.com/ccdwyer/mirror-pane. Run claude plugin validate on it first and show me what it can access before you enable it.