diff --git a/tools/delegate_tool.py b/tools/delegate_tool.py
index cbef17a89..534df4499 100644
--- a/tools/delegate_tool.py
+++ b/tools/delegate_tool.py
@@ -160,6 +160,9 @@ def _build_child_agent(
     override_base_url: Optional[str] = None,
     override_api_key: Optional[str] = None,
     override_api_mode: Optional[str] = None,
+    # ACP transport overrides — lets a non-ACP parent spawn ACP child agents
+    override_acp_command: Optional[str] = None,
+    override_acp_args: Optional[List[str]] = None,
 ):
     """
     Build a child AIAgent on the main thread (thread-safe construction).
@@ -215,8 +218,8 @@ def _build_child_agent(
     effective_base_url = override_base_url or parent_agent.base_url
     effective_api_key = override_api_key or parent_api_key
     effective_api_mode = override_api_mode or getattr(parent_agent, "api_mode", None)
-    effective_acp_command = getattr(parent_agent, "acp_command", None)
-    effective_acp_args = list(getattr(parent_agent, "acp_args", []) or [])
+    effective_acp_command = override_acp_command or getattr(parent_agent, "acp_command", None)
+    effective_acp_args = list(override_acp_args if override_acp_args is not None else (getattr(parent_agent, "acp_args", []) or []))
 
     child = AIAgent(
         base_url=effective_base_url,
@@ -420,6 +423,8 @@ def delegate_task(
     toolsets: Optional[List[str]] = None,
     tasks: Optional[List[Dict[str, Any]]] = None,
     max_iterations: Optional[int] = None,
+    acp_command: Optional[str] = None,
+    acp_args: Optional[List[str]] = None,
     parent_agent=None,
 ) -> str:
     """
@@ -501,6 +506,8 @@ def delegate_task(
                 override_provider=creds["provider"], override_base_url=creds["base_url"],
                 override_api_key=creds["api_key"],
                 override_api_mode=creds["api_mode"],
+                override_acp_command=t.get("acp_command") or acp_command,
+                override_acp_args=t.get("acp_args") or acp_args,
             )
             # Override with correct parent tool names (before child construction mutated global)
             child._delegate_saved_tool_names = _parent_tool_names
@@ -777,7 +784,16 @@ DELEGATE_TASK_SCHEMA = {
                         "toolsets": {
                             "type": "array",
                             "items": {"type": "string"},
-                            "description": "Toolsets for this specific task",
+                            "description": "Toolsets for this specific task. Use 'web' for network access, 'terminal' for shell.",
+                        },
+                        "acp_command": {
+                            "type": "string",
+                            "description": "Per-task ACP command override (e.g. 'claude'). Overrides the top-level acp_command for this task only.",
+                        },
+                        "acp_args": {
+                            "type": "array",
+                            "items": {"type": "string"},
+                            "description": "Per-task ACP args override.",
                         },
                     },
                     "required": ["goal"],
@@ -796,6 +812,23 @@ DELEGATE_TASK_SCHEMA = {
                     "Only set lower for simple tasks."
                 ),
             },
+            "acp_command": {
+                "type": "string",
+                "description": (
+                    "Override ACP command for child agents (e.g. 'claude', 'copilot'). "
+                    "When set, children use ACP subprocess transport instead of inheriting "
+                    "the parent's transport. Enables spawning Claude Code (claude --acp --stdio) "
+                    "or other ACP-capable agents from any parent, including Discord/Telegram/CLI."
+                ),
+            },
+            "acp_args": {
+                "type": "array",
+                "items": {"type": "string"},
+                "description": (
+                    "Arguments for the ACP command (default: ['--acp', '--stdio']). "
+                    "Only used when acp_command is set. Example: ['--acp', '--stdio', '--model', 'claude-opus-4-6']"
+                ),
+            },
         },
         "required": [],
     },
@@ -815,6 +848,8 @@ registry.register(
         toolsets=args.get("toolsets"),
         tasks=args.get("tasks"),
         max_iterations=args.get("max_iterations"),
+        acp_command=args.get("acp_command"),
+        acp_args=args.get("acp_args"),
         parent_agent=kw.get("parent_agent")),
     check_fn=check_delegate_requirements,
     emoji="🔀",