What is sidecard?
sidecard is a Claude Code mod by phunterlau that tiny disposable learning cards under Claude Code's spinner while it works. Categories are markdown files. It is listed under Interface and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | phunterlau |
| Repository | phunterlau/sidecard |
| Popularity | no public popularity data yet |
| Category | Interface |
| Security | Review before installing (72/100) |
| Rank | #4,275 of 5,272 Claude Code mods; #1,768 in Interface |
| License | MIT |
| Last commit | 2026-10-05 |
| Hooks | 9 events |
| Sees | classic hooks, every prompt, every tool call |
| Draws on | Spinner, AbovePrompt, Pane |
Is sidecard safe to install?
sidecard scores 72/100 on the MCPMods security check: Review before installing. Things to review: reads environment variables; watches every prompt or event. 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 no files or config | Pass |
| Reads environment variables | Review |
| Watches every prompt or event | Review |
| Drives Claude (model calls, prompts) | Note |
| 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.list | reads files |
$.fs.read | reads files |
$.model.complete | drives Claude |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.close | draws interface |
$.ui.invalidate | draws interface |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
How do I install sidecard?
- 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/phunterlau/sidecard claude plugin validate ./sidecard/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add phunterlau/sidecard && claude plugin install sidecard@sidecard
Or ask Claude to set it up
Paste this into Claude Code and it installs sidecard for you:
Install the "sidecard" Claude Code mod from https://github.com/phunterlau/sidecard. Run claude plugin validate on it first and show me what it can access before you enable it.