diff --git a/mcp_server_cli.py b/mcp_server_cli.py
index ba79d1c..6f6ce90 100755
--- a/mcp_server_cli.py
+++ b/mcp_server_cli.py
@@ -100,6 +100,17 @@ class MCPServer:
                     "required": ["query"]
                 }
             },
+            {
+                "name": "global_search",
+                "description": "Search projects, todos and campfire messages across all projects",
+                "inputSchema": {
+                    "type": "object",
+                    "properties": {
+                        "query": {"type": "string", "description": "Search query"}
+                    },
+                    "required": ["query"]
+                }
+            },
             {
                 "name": "get_comments",
                 "description": "Get comments for a Basecamp item",
@@ -369,6 +380,16 @@ class MCPServer:
                     "results": results
                 }
 
+            elif tool_name == "global_search":
+                query = arguments.get("query")
+                search = BasecampSearch(client=client)
+                results = search.global_search(query)
+                return {
+                    "status": "success",
+                    "query": query,
+                    "results": results
+                }
+
             elif tool_name == "get_comments":
                 recording_id = arguments.get("recording_id")
                 project_id = arguments.get("project_id")
diff --git a/search_utils.py b/search_utils.py
index 1b44b3e..4e1f446 100644
--- a/search_utils.py
+++ b/search_utils.py
@@ -556,3 +556,50 @@ class BasecampSearch:
         except Exception as e:
             logger.error(f"Error searching campfire lines: {str(e)}")
             return []
+
+    def search_all_campfire_lines(self, query=None):
+        """Search campfire chat lines across all projects."""
+        all_lines = []
+
+        try:
+            projects = self.client.get_projects()
+
+            for project in projects:
+                project_id = project["id"]
+                try:
+                    campfires = self.client.get_campfires(project_id)
+                    for campfire in campfires:
+                        campfire_id = campfire["id"]
+                        lines = self.client.get_campfire_lines(project_id, campfire_id)
+
+                        for line in lines:
+                            line["project"] = {"id": project_id, "name": project.get("name")}
+                            line["campfire"] = {"id": campfire_id, "title": campfire.get("title")}
+                            all_lines.append(line)
+                except Exception as e:
+                    logger.error(f"Error getting campfire lines for project {project_id}: {str(e)}")
+
+            if query and all_lines:
+                q = query.lower()
+                filtered = []
+                for line in all_lines:
+                    content = line.get("content", "") or ""
+                    creator_name = ""
+                    if line.get("creator"):
+                        creator_name = line["creator"].get("name", "")
+                    if q in content.lower() or (creator_name and q in creator_name.lower()):
+                        filtered.append(line)
+                return filtered
+
+            return all_lines
+        except Exception as e:
+            logger.error(f"Error searching all campfire lines: {str(e)}")
+            return []
+
+    def global_search(self, query=None):
+        """Search projects, todos and campfire lines at once."""
+        return {
+            "projects": self.search_projects(query),
+            "todos": self.search_todos(query),
+            "campfire_lines": self.search_all_campfire_lines(query),
+        }
diff --git a/tests/test_cli_server.py b/tests/test_cli_server.py
index 86f9792..c7c6c74 100644
--- a/tests/test_cli_server.py
+++ b/tests/test_cli_server.py
@@ -102,7 +102,7 @@ def test_cli_server_tools_list():
 
         # Check that expected tools are present
         tool_names = [tool["name"] for tool in tools]
-        expected_tools = ["get_projects", "search_basecamp", "get_todos"]
+        expected_tools = ["get_projects", "search_basecamp", "get_todos", "global_search"]
         for expected_tool in expected_tools:
             assert expected_tool in tool_names
 
@@ -175,6 +175,55 @@ def test_cli_server_tool_call_no_auth(mock_get_token):
         if proc.poll() is None:
             proc.terminate()
 
+@patch.object(token_storage, 'get_token')
+def test_cli_server_global_search_call_no_auth(mock_get_token):
+    """Test global search tool call without authentication."""
+    init_request = {
+        "jsonrpc": "2.0",
+        "id": 1,
+        "method": "initialize",
+        "params": {}
+    }
+
+    tool_request = {
+        "jsonrpc": "2.0",
+        "id": 2,
+        "method": "tools/call",
+        "params": {
+            "name": "global_search",
+            "arguments": {"query": "test"}
+        }
+    }
+
+    proc = subprocess.Popen(
+        [sys.executable, "mcp_server_cli.py"],
+        stdin=subprocess.PIPE,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        text=True
+    )
+
+    try:
+        input_data = json.dumps(init_request) + "\n" + json.dumps(tool_request) + "\n"
+        stdout, stderr = proc.communicate(
+            input=input_data,
+            timeout=10
+        )
+
+        lines = stdout.strip().split('\n')
+        assert len(lines) >= 2
+
+        tool_response = json.loads(lines[1])
+
+        assert tool_response["jsonrpc"] == "2.0"
+        assert tool_response["id"] == 2
+        assert "result" in tool_response
+        assert "content" in tool_response["result"]
+
+    finally:
+        if proc.poll() is None:
+            proc.terminate()
+
 def test_cli_server_invalid_method():
     """Test that the CLI server handles invalid methods."""
     request = {