What is skill-trace?
skill-trace is a Claude Code mod by madolphe that see which skills and plugins activated in your Claude Code session, what triggered them, and what they really cost in tokens (with prompt-cache pricing). It is listed under Cost & usage and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | madolphe |
| Repository | madolphe/skill-trace |
| Popularity | no public popularity data yet |
| Category | Cost & usage |
| Security | Low risk (100/100) |
| Rank | #3,888 of 5,272 Claude Code mods; #730 in Cost & usage |
| License | MIT |
| Last commit | 2026-10-06 |
| Hooks | 11 events |
| Sees | every skill, every tool call, subagent spawns |
| Draws on | Pane |
Is skill-trace safe to install?
skill-trace scores 100/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 8 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 |
| 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.now | |
$.command.register | |
$.state.get | |
$.state.set | |
$.ui.close | draws interface |
$.ui.open | draws interface |
$.ui.panes | draws interface |
$.ui.resolve | draws interface |
$.ui.status | draws interface |
$.ui.toast | draws interface |
How do I install skill-trace?
- 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/madolphe/skill-trace claude plugin validate ./skill-trace/plugins/skill-trace
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add madolphe/skill-trace && claude plugin install skill-trace@skill-trace
Or ask Claude to set it up
Paste this into Claude Code and it installs skill-trace for you:
Install the "skill-trace" Claude Code mod from https://github.com/madolphe/skill-trace/tree/main/plugins/skill-trace. Run claude plugin validate on it first and show me what it can access before you enable it.