diff --git a/libtft.py b/libtft.py
index 18986d0..5b26497 100644
--- a/libtft.py
+++ b/libtft.py
@@ -380,3 +380,44 @@ def cmd_hash_object(args):
     with open(args.path, "rb") as fd:
         sha = object_hash(fd, args.type.encode(), repo)
         print(sha)
+
+argsp = argsubparsers.add_parser("add", help = "Add files contents to the index.")
+argsp.add_argument("path", nargs="+", help="Files to add")
+
+def cmd_add(args):
+    repo = repo_find()
+    add(repo, args.path)
+
+def add(repo, paths, delete=True, skip_missing=False):
+    rm(repo, paths, delete=False, skip_missing=True)
+    worktree = repo.worktree + os.sep
+     
+    clean_paths = list()
+    for path in paths:
+        abspath = os.path.abspath(path)
+        if not (abspath.startswith(worktree) and os.path.isfile(abspath)):
+            raise Exception("Not a file, or outside the worktree: {}".format(paths))
+        relpath = os.path.relpath(abspath, repo.worktree)
+        clean_paths.append((abspath,  relpath))
+        
+        index = index_read(repo)
+
+        for (abspath, relpath) in clean_paths:
+            with open(abspath, "rb") as fd:
+                sha = object_hash(fd, b"blob", repo)
+
+            stat = os.stat(abspath) # to get metadata of files
+
+            ctime_s = int(stat.st_ctime)
+            ctime_ns = stat.st_ctime_ns % 10**9
+            mtime_s = int(stat.st_mtime)
+            mtime_ns = stat.st_mtime_ns % 10**9
+
+            entry = GitIndexEntry(ctime=(ctime_s, ctime_ns), mtime=(mtime_s, mtime_ns), dev=stat.st_dev, ino=stat.st_ino,
+                                    mode_type=0b1000, mode_perms=0o644, uid=stat.st_uid, gid=stat.st_gid,
+                                    fsize=stat.st_size, sha=sha, flag_assume_valid=False,
+                                    flag_stage=False, name=relpath)
+            index.entries.append(entry)
+
+        index_write(repo, index)
+    
\ No newline at end of file