What is linecat?
linecat is a Claude Code mod by fivood that a cat walks a line your Claude Code session unfolds, wearing what Claude is doing overhead; plus retro paper-panel styling for messages, tool rows and a usage monitor. It is listed under Cost & usage and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | fivood |
| Repository | fivood/nier-ui |
| Popularity | no public popularity data yet |
| Category | Cost & usage |
| Security | Low risk (84/100) |
| Rank | #3,216 of 5,272 Claude Code mods; #585 in Cost & usage |
| Last commit | 2026-10-13 |
| Hooks | 11 events |
| Sees | classic hooks, compaction, every prompt, every tool call |
| Draws on | AbovePrompt, Pane, Spinner, ToolUse, ToolGroup, AssistantMessage, UserMessage |
Is linecat safe to install?
linecat scores 84/100 on the MCPMods security check: Low risk. Things to review: watches every prompt or event. 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 no processes | Pass |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Watches every prompt or event | Review |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.every | |
$.clock.now | |
$.command.register | |
$.config.list | |
$.session.usage | |
$.state.get | |
$.state.set | |
$.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 linecat?
- 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/fivood/nier-ui claude plugin validate ./nier-ui/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add fivood/nier-ui && claude plugin install linecat@fivood
Or ask Claude to set it up
Paste this into Claude Code and it installs linecat for you:
Install the "linecat" Claude Code mod from https://github.com/fivood/nier-ui. Run claude plugin validate on it first and show me what it can access before you enable it.