diff --git a/pom.xml b/pom.xml
index 1ab9cb6..0470de5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -68,6 +68,20 @@
                     <excludePackageNames>example;*.impl</excludePackageNames>
                 </configuration>
             </plugin>
+            
+            <plugin>
+                <groupId>org.antlr</groupId>
+                <artifactId>antlr4-maven-plugin</artifactId>
+                <version>4.2.2</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>antlr4</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>            
+ 
         </plugins>
     </build>
     <properties>
@@ -81,6 +95,20 @@
             <version>3.8.1</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.antlr</groupId>
+            <artifactId>antlr4-runtime</artifactId>
+            <version>4.2.1</version>
+            <classifier>complete</classifier>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.antlr</groupId>
+            <artifactId>antlr4</artifactId>
+            <version>4.2.1</version>
+            <classifier>complete</classifier>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 </project>
 
diff --git a/src/main/antlr4/me/legrange/mikrotik/impl/parser/Command.g4 b/src/main/antlr4/me/legrange/mikrotik/impl/parser/Command.g4
new file mode 100644
index 0000000..6dda077
--- /dev/null
+++ b/src/main/antlr4/me/legrange/mikrotik/impl/parser/Command.g4
@@ -0,0 +1,23 @@
+/** A Mikrotik API Command grammar */
+
+grammar Command;		
+line:       command param* where? retrn? ;
+command:    CMD ;
+param:      NAME ('=' text )? ;
+text:       NO_SPACE | QUOTED ;
+where:      'where' expr ;
+expr:       ( eqExpr | hasExpr | moreExpr | lessExpr ) binExpr? ;
+binExpr:    andExpr | orExpr ;
+eqExpr:     NAME '=' text ;
+hasExpr:    NAME ;
+moreExpr:   NAME '>' text; 
+lessExpr:   NAME '<' text;
+andExpr:    expr 'and' expr ;
+orExpr:     expr 'or'  expr ;
+retrn:    'returns' NAME (',' NAME )* ;
+
+NAME     : ('a'..'z'|'A'..'Z'|'-')+ ;
+CMD_PART : ('/'  NAME)+ ;
+CMD      : CMD_PART+  ;
+NO_SPACE : [\\S]+ ;
+QUOTED   : ('"'  [.]*  '"') ;
\ No newline at end of file