What is topic-filter?
topic-filter is a Claude Code mod by lperezmo that keep unrelated topics from pulling Claude off your code: listed terms become stable placeholder names (or their lines are dropped) in tool output, prompts, CLAUDE.md and skills before the. It is listed under Interface and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | lperezmo |
| Repository | lperezmo/topic-filter-mod |
| Popularity | no public popularity data yet |
| Category | Interface |
| Security | Review before installing (76/100) |
| Rank | #3,832 of 5,272 Claude Code mods; #1,601 in Interface |
| License | GPL-3.0 |
| Last commit | 2026-10-03 |
| Hooks | 12 events |
| Sees | every prompt, every skill, every tool call, the system prompt |
| Draws on | SessionMode, Pane |
Is topic-filter safe to install?
topic-filter scores 76/100 on the MCPMods security check: Review before installing. Things to review: reads environment variables; 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 |
| Reads environment variables | Review |
| Watches every prompt or event | Review |
| 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 |
|---|---|
$.agent.list | |
$.command.register | |
$.env.get | reads env vars |
$.fs.list | reads files |
$.fs.read | reads files |
$.fs.stat | reads files |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.close | draws interface |
$.ui.invalidate | draws interface |
$.ui.log | draws interface |
$.ui.open | draws interface |
$.ui.panes | draws interface |
$.ui.resolve | draws interface |
$.ui.toast | draws interface |
How do I install topic-filter?
- 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/lperezmo/topic-filter-mod claude plugin validate ./topic-filter-mod/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add lperezmo/topic-filter-mod && claude plugin install topic-filter@topic-filter-mod
Or ask Claude to set it up
Paste this into Claude Code and it installs topic-filter for you:
Install the "topic-filter" Claude Code mod from https://github.com/lperezmo/topic-filter-mod. Run claude plugin validate on it first and show me what it can access before you enable it.