What is catalyst-refusal-watch?
catalyst-refusal-watch is a Claude Code mod by TransmuteLabs that makes every response the service filter stopped visible at once and adds a rule: report it, do not drop work silently. It is listed under Interface and has 3 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | TransmuteLabs |
| Repository | TransmuteLabs/Catalyst |
| Popularity | 3 GitHub stars |
| Category | Interface |
| Security | Low risk (80/100) |
| Rank | #1,030 of 5,272 Claude Code mods; #401 in Interface |
| Last commit | 2026-10-06 |
| Hooks | 8 events |
| Sees | TaskStop calls, the system prompt |
| Draws on | nothing |
Is catalyst-refusal-watch safe to install?
catalyst-refusal-watch scores 80/100 on the MCPMods security check: Low risk. Things to review: reads environment variables. 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 |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Validator reported problems | Note |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.now | |
$.clock.sleep | |
$.env.get | reads env vars |
$.settings.read | reads settings |
$.store.delete | keeps its own state |
$.store.keys | keeps its own state |
$.store.set | keeps its own state |
$.ui.log | draws interface |
$.ui.status | draws interface |
$.ui.toast | draws interface |
How do I install catalyst-refusal-watch?
- 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/TransmuteLabs/Catalyst claude plugin validate ./Catalyst/plugins/catalyst-refusal-watch
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add TransmuteLabs/Catalyst && claude plugin install catalyst-refusal-watch@catalyst
Or ask Claude to set it up
Paste this into Claude Code and it installs catalyst-refusal-watch for you:
Install the "catalyst-refusal-watch" Claude Code mod from https://github.com/TransmuteLabs/Catalyst/tree/main/plugins/catalyst-refusal-watch. Run claude plugin validate on it first and show me what it can access before you enable it.
More from TransmuteLabs/Catalyst
This repository has 4 Claude Code mods on MCPMods.
- catalyst-probes: Consultation and prompt engine for Claude Mods. The module is the core; [probe.] tables in probes.toml are the consultan (High risk)
- catalyst-statusline: Multi-line status HUD above the prompt over data families (hooks/data/*.ts pure collectors, one core subscription per ev (High risk)
- catalyst-swe-request: Request-text policy for devin/swe-2: registers one rule in the host's $.requestText noun. (Low risk)