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---
name: brain-log
description: Show brain sync and evolution history.
---
Show the user their brain's sync history.
## Steps
1. Read the merge log:
```bash
cat ~/.claude/brain-repo/meta/merge-log.json 2>/dev/null
```
2. If the file doesn't exist or is empty, tell the user: "No sync history yet."
3. Otherwise, display the most recent entries in reverse chronological order. Default to 20 entries, but if $ARGUMENTS is a number, use that instead.
Format each entry as:
```
[timestamp] machine_name (action): summary
```
Example:
```
[2026-03-03T12:05:00Z] work-laptop (pull+merge): Merged 3 machine snapshots
[2026-03-03T11:00:00Z] home-desktop (push): Exported brain snapshot
[2026-03-02T09:30:00Z] work-laptop (evolve): Promoted 2 patterns to CLAUDE.md
```
