diff --git a/v6d2ctx/handle_args.py b/v6d2ctx/handle_args.py
new file mode 100644
index 0000000..e9caf55
--- /dev/null
+++ b/v6d2ctx/handle_args.py
@@ -0,0 +1,18 @@
+import discord
+
+from v6d2ctx.context import Context, Implicit, Explicit
+from v6d2ctx.handle_command import handle_command
+
+
+async def handle_args(message: discord.Message, args: list[str]):
+    match args:
+        case []:
+            return
+        case [command_name, *command_args]:
+            ctx = Context(message)
+            try:
+                await handle_command(ctx, command_name, command_args)
+            except Implicit:
+                pass
+            except Explicit as e:
+                await ctx.reply(e.msg)
diff --git a/v6d2ctx/handle_command.py b/v6d2ctx/handle_command.py
new file mode 100644
index 0000000..21263ed
--- /dev/null
+++ b/v6d2ctx/handle_command.py
@@ -0,0 +1,5 @@
+from v6d2ctx.context import Context, of
+
+
+async def handle_command(ctx: Context, name: str, args: list[str]) -> None:
+    await of('commands', name)(ctx, args)
diff --git a/v6d2ctx/handle_content.py b/v6d2ctx/handle_content.py
new file mode 100644
index 0000000..abf48e7
--- /dev/null
+++ b/v6d2ctx/handle_content.py
@@ -0,0 +1,15 @@
+import shlex
+
+import discord
+
+from v6d2ctx.handle_args import handle_args
+
+
+async def handle_content(message: discord.Message, content: str, prefix: str):
+    if message.author.bot:
+        return
+    if not content.startswith(prefix):
+        return
+    content = content.removeprefix(prefix)
+    args = shlex.split(content)
+    await handle_args(message, args)
diff --git a/v6d2ctx/lock_for.py b/v6d2ctx/lock_for.py
new file mode 100644
index 0000000..6c6edaf
--- /dev/null
+++ b/v6d2ctx/lock_for.py
@@ -0,0 +1,15 @@
+import asyncio
+from typing import Hashable
+
+from v6d2ctx.context import Explicit
+
+locks: dict[Hashable, asyncio.Lock] = {}
+
+
+def lock_for(key: Hashable, error_message: str) -> asyncio.Lock:
+    if key is None:
+        raise Explicit(error_message)
+    if key in locks:
+        return locks[key]
+    else:
+        return locks.setdefault(key, asyncio.Lock())