diff --git a/hooks/enforce-comms.py b/hooks/enforce-comms.py
new file mode 100644
index 0000000..77e676e
--- /dev/null
+++ b/hooks/enforce-comms.py
@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+"""
+Enforce comms Delegation Hook - PreToolUse hook that blocks central from posting directly.
+
+This hook enforces the architectural pattern where central (the main agent) delegates
+all public communications to the comms subagent. When central attempts to run
+posting-related commands, this hook blocks them with a helpful redirect message.
+
+Exit codes:
+  0 - Allow the action to proceed
+  2 - Block the action and send stderr message to the agent
+"""
+
+import sys
+import json
+import os
+
+# Agent IDs
+CENTRAL_AGENT_ID = "agent-c770d1c8-510e-4414-be36-c9ebd95a7758"
+COMMS_AGENT_ID = "agent-a856f614-7654-44ba-a35f-c817d477dded"
+
+# Patterns in Bash commands that indicate posting activity
+POSTING_PATTERNS = [
+    "tools.thread",
+    "tools.devlog",
+    "tools.responder send",
+    "tools.respond",
+    "agent.py post",
+    "tools.blog publish",
+    "tools.cognition write",
+    "create_post",
+]
+
+
+def main():
+    """Process PreToolUse hook input."""
+    try:
+        input_data = json.load(sys.stdin)
+    except Exception:
+        # If we can't parse input, allow the action
+        sys.exit(0)
+
+    event_type = input_data.get("event_type")
+    tool_name = input_data.get("tool_name", "")
+    tool_input = input_data.get("tool_input", {})
+
+    # Only process PreToolUse events
+    if event_type != "PreToolUse":
+        sys.exit(0)
+
+    # Only check Bash commands
+    if tool_name != "Bash":
+        sys.exit(0)
+
+    # Check current agent
+    current_agent = os.environ.get("LETTA_AGENT_ID", "")
+    
+    # If this is comms or any other agent (not central), allow
+    if current_agent != CENTRAL_AGENT_ID:
+        sys.exit(0)
+
+    # Get the command being run
+    command = tool_input.get("command", "")
+
+    # Check if command matches any posting pattern
+    for pattern in POSTING_PATTERNS:
+        if pattern in command.lower():
+            # Block the action with a helpful message
+            message = f"""BLOCKED: Direct posting not allowed for central agent.
+
+You attempted to run a posting command directly:
+  {command[:100]}{'...' if len(command) > 100 else ''}
+
+Per architectural rules, central must delegate all public communications to comms.
+
+To post content, use the comms subagent:
+  Task(
+    agent_id="{COMMS_AGENT_ID}",
+    subagent_type="general-purpose",
+    prompt="Post the following: <your content>"
+  )
+
+If comms fails, message comms directly to debug/retry. Do NOT bypass by posting directly.
+"""
+            print(message, file=sys.stderr)
+            sys.exit(2)
+
+    # No posting pattern detected, allow the command
+    sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()