diff --git a/bin/sync-up.sh b/bin/sync-up.sh
new file mode 100755
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--- /dev/null
+++ b/bin/sync-up.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+# sync-up.sh — Push live ~/.hermes config changes UP to timmy-config repo.
+# The harness is the source. The repo is the record.
+# Run periodically or after significant config changes.
+
+set -euo pipefail
+
+REPO_DIR="$HOME/.timmy/timmy-config"
+HERMES_HOME="$HOME/.hermes"
+
+log() { echo "[sync-up] $*"; }
+
+# === Copy live config into repo ===
+cp "$HERMES_HOME/config.yaml" "$REPO_DIR/config.yaml"
+log "config.yaml"
+
+# === Playbooks ===
+for f in "$HERMES_HOME"/playbooks/*.yaml; do
+  [ -f "$f" ] && cp "$f" "$REPO_DIR/playbooks/"
+done
+log "playbooks/"
+
+# === Skins ===
+for f in "$HERMES_HOME"/skins/*; do
+  [ -f "$f" ] && cp "$f" "$REPO_DIR/skins/"
+done
+log "skins/"
+
+# === Channel directory ===
+[ -f "$HERMES_HOME/channel_directory.json" ] && cp "$HERMES_HOME/channel_directory.json" "$REPO_DIR/"
+log "channel_directory.json"
+
+# === Commit and push if there are changes ===
+cd "$REPO_DIR"
+if [ -n "$(git status --porcelain)" ]; then
+  git add -A
+  git commit -m "sync: live config from ~/.hermes $(date +%Y-%m-%d_%H:%M)"
+  git push
+  log "Pushed changes to Gitea."
+else
+  log "No changes to sync."
+fi