diff --git a/tooling/pipeline/.clang-format b/tooling/pipeline/.clang-format
index fb2006d..dfce26b 100644
--- a/tooling/pipeline/.clang-format
+++ b/tooling/pipeline/.clang-format
@@ -1,5 +1,5 @@
 ---
 BasedOnStyle: Google
-ColumnLimit: 80
-IndentWidth: 2
+ColumnLimit: 90
+IndentWidth: 4
 ...
diff --git a/tooling/pipeline/format-per-directory.sh b/tooling/pipeline/format-per-directory.sh
new file mode 100755
index 0000000..85da085
--- /dev/null
+++ b/tooling/pipeline/format-per-directory.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+#
+# Walks every directory under src/ and includes/ (including nested
+# subdirectories), runs clang-format on the C/C++ files in that directory
+# only (non-recursive), and commits the result with its own commit.
+#
+# Usage: ./format-per-directory.sh [-y]
+#   -y  skip the confirmation prompt
+
+set -euo pipefail
+
+SKIP_CONFIRM=false
+if [[ "${1:-}" == "-y" ]]; then
+    SKIP_CONFIRM=true
+fi
+
+cd "$(dirname "$0")"
+
+if [ ! -f .clang-format ]; then
+    echo "ERROR: .clang-format file not found."
+    exit 1
+fi
+
+if ! command -v clang-format &>/dev/null; then
+    echo "ERROR: clang-format not found."
+    exit 1
+fi
+
+if ! command -v git &>/dev/null; then
+    echo "ERROR: git not found."
+    exit 1
+fi
+
+echo "WARNING: This script will format .cpp, .h, .cxx, .cc, .c, .hpp files"
+echo "directory-by-directory under src/ and includes/, committing after each"
+echo "directory is formatted."
+
+if [[ "$SKIP_CONFIRM" == false ]]; then
+    read -p "Do you want to continue? (y/n) " -n 1 -r
+    echo
+    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+        echo "Aborted."
+        exit 1
+    fi
+fi
+
+if [[ -n "$(git status --porcelain)" ]]; then
+    echo "ERROR: working tree is not clean. Commit or stash your changes first."
+    exit 1
+fi
+
+dirs=$(find src includes -type d | sort)
+
+for dir in $dirs; do
+    files=$(find "$dir" -maxdepth 1 -type f \( -name "*.cpp" -o -name "*.hpp" -o -name "*.h" -o -name "*.c" -o -name "*.cc" -o -name "*.cxx" \))
+
+    if [[ -z "$files" ]]; then
+        continue
+    fi
+
+    echo "Formatting $dir..."
+    echo "$files" | xargs clang-format -i
+
+    if [[ -n "$(git status --porcelain -- "$dir")" ]]; then
+        git add -- "$dir"
+        git commit -m "Formatted $dir"
+    else
+        echo "No changes in $dir, skipping commit."
+    fi
+done
+
+echo "Done."