Change

ctx change¶

Show what changed in context files and code since your last session.

Automatically detects the previous session boundary from state markers or event log. Useful at session start to quickly see what moved while you were away.

ctx change [flags]

Flags:

Reference time detection (priority order):

1. --since flag (duration, date, or RFC3339 timestamp)
2. ctx-loaded-* marker files in .context/state/ (second most recent)
3. Last context-load-gate event from .context/state/events.jsonl
4. Fallback: 24 hours ago

Examples:

# Auto-detect last session, show what changed
ctx change

# Changes in the last 48 hours
ctx change --since 48h

# Changes since a specific date
ctx change --since 2026-03-10

Output:

## Changes Since Last Session

**Reference point**: 6 hours ago

### Context File Changes
- `TASKS.md` - modified 2026-03-12 14:30
- `DECISIONS.md` - modified 2026-03-12 09:15

### Code Changes
- **12 commits** since reference point
- **Latest**: Fix journal enrichment ordering
- **Directories touched**: internal, docs, specs
- **Authors**: jose, claude

Context file changes are detected by filesystem mtime (works without git). Code changes use git log --since (empty when not in a git repo).

See also: Reviewing Session Changes.