What is cc-traj-seg?
cc-traj-seg is a Claude Code mod by lucastononro that trajectory segmentation for long Claude Code sessions: every N steps a model of your choice (haiku by default) reads the previous segments and the last 40 steps and either adds a segment. It is listed under Interface and has 1 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | lucastononro |
| Repository | lucastononro/cc-traj-seg |
| Popularity | 1 GitHub stars |
| Category | Interface |
| Security | Review before installing (72/100) |
| Rank | #1,942 of 5,272 Claude Code mods; #779 in Interface |
| License | MIT |
| Last commit | 2026-10-06 |
| Hooks | 7 events |
| Sees | every tool call |
| Draws on | Pane |
Is cc-traj-seg safe to install?
cc-traj-seg scores 72/100 on the MCPMods security check: Review before installing. Things to review: writes files or config; 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 files or config | Review |
| Reads environment variables | Review |
| Only sees the events it hooks | Pass |
| 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.now | |
$.command.register | |
$.env.get | reads env vars |
$.fs.read | reads files |
$.fs.write | writes files |
$.model.complete | drives Claude |
$.session.id | |
$.session.messages | reads the transcript |
$.session.usage | |
$.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.resolve | draws interface |
$.ui.toast | draws interface |
How do I install cc-traj-seg?
- 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/lucastononro/cc-traj-seg claude plugin validate ./cc-traj-seg/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add lucastononro/cc-traj-seg && claude plugin install cc-traj-seg@cc-traj-seg
Or ask Claude to set it up
Paste this into Claude Code and it installs cc-traj-seg for you:
Install the "cc-traj-seg" Claude Code mod from https://github.com/lucastononro/cc-traj-seg. Run claude plugin validate on it first and show me what it can access before you enable it.