diff --git a/.forgejo/workflows/check.yml b/.forgejo/workflows/check.yml
new file mode 100644
index 0000000..f736669
--- /dev/null
+++ b/.forgejo/workflows/check.yml
@@ -0,0 +1,23 @@
+on:
+  push:
+jobs:
+  check:
+    runs-on: nixos
+    steps:
+      - uses: "https://code.forgejo.org/actions/checkout@v4"
+      - run: nix --version
+      - run: nix flake check --keep-going --verbose
+  build:
+    runs-on: nixos
+    strategy:
+      matrix:
+        target:
+          - audiomenu
+          - docs
+          - jpassmenu
+          - nixosConfigurations.vm.config.system.build.toplevel
+          - nvim
+    steps:
+      - uses: "https://code.forgejo.org/actions/checkout@v4"
+      - run: nix --version
+      - run: nix build --print-build-logs '.#${{ matrix.target }}'
diff --git a/ci-scripts/report-size.sh b/ci-scripts/report-size.sh
index 77533d7..c573541 100755
--- a/ci-scripts/report-size.sh
+++ b/ci-scripts/report-size.sh
@@ -18,23 +18,21 @@ package_size_table() {
 }
 
 if [ "$CI" = "true" ]; then
-	pr_number=$(curl -X 'GET' \
-		"$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/pulls?state=open&sort=recentupdate" \
-		-H 'accept: application/json' |
-		jq --arg head_ref "$GITHUB_HEAD_REF" '.[] | select(.head.ref == $head_ref) | .number')
-	echo "Retrieved index: $pr_number"
-	echo "Expected PR URL: $GITHUB_SERVER_URL/$GITHUB_REPOSITORY/pulls/$pr_number"
-
 	echo "Logging in to $GITHUB_SERVER_URL with default token"
 	tea login add --url "$GITHUB_SERVER_URL" --token "$GITHUB_TOKEN"
-	tea comment "$pr_number" "$(
+	echo "Retrieving PR index for $GITHUB_HEAD_REF"
+	tea pulls -f index,head -o simple
+	pr_index=$(tea pulls -f index,head -o simple | grep "$GITHUB_HEAD_REF" | head -n1 | cut -d' ' -f 1)
+	echo "Retrieved index: $pr_index"
+	echo "Expected PR URL: $GITHUB_SERVER_URL/$GITHUB_REPOSITORY/pulls/$pr_index"
+	tea comment "$pr_index" "$(
 		cat <<-EOF
 			### NixOS Configurations sizes
-	
+
 			TODO
-	
+
 			### Package sizes
-	
+
 			$(package_size_table)
 		EOF
 	)"