diff --git a/cmd/mcp.go b/cmd/mcp.go
index 1a758ae..cc42687 100644
--- a/cmd/mcp.go
+++ b/cmd/mcp.go
@@ -28,6 +28,7 @@ Manual smoke test:
 For agent registration use:
   codag setup`,
 	RunE: func(cmd *cobra.Command, args []string) error {
+		mcp.Version = Version
 		s := mcp.NewServer()
 		mcp.RegisterAll(s)
 		return s.Serve()
diff --git a/internal/mcp/server.go b/internal/mcp/server.go
index 657c2d7..5a767dd 100644
--- a/internal/mcp/server.go
+++ b/internal/mcp/server.go
@@ -44,6 +44,10 @@ var (
 // since are backward-compatible at the level of methods we use.
 const ProtocolVersion = "2025-03-26"
 
+// Version is the CLI version reported in the MCP initialize response.
+// Set by the cmd package before Serve() is called; defaults to "dev".
+var Version = "dev"
+
 // jrpcRequest is a JSON-RPC 2.0 request frame.
 type jrpcRequest struct {
 	JSONRPC string          `json:"jsonrpc"`
@@ -184,7 +188,7 @@ func (s *Server) dispatch(req jrpcRequest) {
 			},
 			"serverInfo": map[string]interface{}{
 				"name":    "codag",
-				"version": "0.1.5",
+				"version": Version,
 			},
 		})
 	case "notifications/initialized":