diff --git a/git-sync b/git-sync
new file mode 100755
index 0000000..6debc71
--- /dev/null
+++ b/git-sync
@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+GIT_HOST="git.alexzaw.dev"
+GIT_OWNER="alexz"
+GIT_TOKEN="dc76c4827cf0c77fe51680b2fadcec879357b821"
+REPO_NAME="${1:-$(basename "$(pwd)")}"
+API_ROOT="https://${GIT_HOST}/api/v1"
+REPO_API="${API_ROOT}/repos/${GIT_OWNER}/${REPO_NAME}"
+
+echo "Checking repository ${GIT_OWNER}/${REPO_NAME}…"
+status="$(curl -s -o /dev/null -w "%{http_code}" \
+  -H "Authorization: token ${GIT_TOKEN}" \
+  "${REPO_API}")"
+
+if [[ "${status}" == "404" ]]; then
+  echo "Repository not found; creating…"
+  payload="$(printf '{"name":"%s","private":true}' "${REPO_NAME}")"
+  create_status="$(curl -s -o /dev/null -w "%{http_code}" \
+    -X POST "${API_ROOT}/user/repos" \
+    -H "Authorization: token ${GIT_TOKEN}" \
+    -H "Content-Type: application/json" \
+    -d "${payload}")"
+  [[ "${create_status}" == "201" ]] || { echo "Create failed (HTTP ${create_status})."; exit 1; }
+elif [[ "${status}" == "200" ]]; then
+  echo "Repository already exists."
+else
+  echo "Unexpected status while checking repo (HTTP ${status})."
+  exit 1
+fi
+
+echo "Preparing local repository…"
+git init >/dev/null
+git branch -M main 2>/dev/null || true
+
+if ! git remote get-url origin >/dev/null 2>&1; then
+  git remote add origin "https://${GIT_HOST}/${GIT_OWNER}/${REPO_NAME}.git"
+fi
+
+if [[ -n "$(git status --porcelain)" ]]; then
+  git add .
+  git commit -m "upload current sources" || true
+else
+  echo "Nothing new to commit; skipping commit step."
+fi
+
+echo "Pushing to origin/main…"
+git -c credential.helper= \
+    -c credential.useHttpPath=true \
+    -c http.extraHeader="Authorization: token ${GIT_TOKEN}" \
+    push -u origin main
+
+echo "Done."
\ No newline at end of file