diff --git a/src/cli/cli_br.hpp b/src/cli/cli_br.hpp
index 794f8741f..cd013096f 100644
--- a/src/cli/cli_br.hpp
+++ b/src/cli/cli_br.hpp
@@ -66,9 +66,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        A pointer an array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_coap.hpp b/src/cli/cli_coap.hpp
index 041e7ae94..feb977128 100644
--- a/src/cli/cli_coap.hpp
+++ b/src/cli/cli_coap.hpp
@@ -64,9 +64,15 @@ public:
     Coap(otInstance *aInstance, OutputImplementer &aOutputImplementer);
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        An array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_coap_secure.hpp b/src/cli/cli_coap_secure.hpp
index 9bdc63135..3b95cd723 100644
--- a/src/cli/cli_coap_secure.hpp
+++ b/src/cli/cli_coap_secure.hpp
@@ -70,9 +70,15 @@ public:
     CoapSecure(otInstance *aInstance, OutputImplementer &aOutputImplementer);
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        An array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_commissioner.hpp b/src/cli/cli_commissioner.hpp
index 7b63cb0d2..d2c2705da 100644
--- a/src/cli/cli_commissioner.hpp
+++ b/src/cli/cli_commissioner.hpp
@@ -67,9 +67,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        An array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_dataset.hpp b/src/cli/cli_dataset.hpp
index 7f11ec302..1ec231450 100644
--- a/src/cli/cli_dataset.hpp
+++ b/src/cli/cli_dataset.hpp
@@ -60,9 +60,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        An array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_dns.hpp b/src/cli/cli_dns.hpp
index b9eb8d892..f746b4d79 100644
--- a/src/cli/cli_dns.hpp
+++ b/src/cli/cli_dns.hpp
@@ -81,9 +81,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        A pointer an array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_history.hpp b/src/cli/cli_history.hpp
index cab6d79eb..42ff6e3e2 100644
--- a/src/cli/cli_history.hpp
+++ b/src/cli/cli_history.hpp
@@ -68,9 +68,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        A pointer an array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_joiner.hpp b/src/cli/cli_joiner.hpp
index cc3ddac2c..677c5eb76 100644
--- a/src/cli/cli_joiner.hpp
+++ b/src/cli/cli_joiner.hpp
@@ -67,9 +67,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        A pointer to an array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_mac_filter.hpp b/src/cli/cli_mac_filter.hpp
index da2c8980e..ac481b503 100644
--- a/src/cli/cli_mac_filter.hpp
+++ b/src/cli/cli_mac_filter.hpp
@@ -68,14 +68,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        A pointer an array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
      *
-     * @reval  OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
      * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
-     * @retavl OT_ERROR_INVALID_ARGS      Invalid arguments.
-     * @retval ...                        Error handling the command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_network_data.hpp b/src/cli/cli_network_data.hpp
index d751c4587..9b9f42626 100644
--- a/src/cli/cli_network_data.hpp
+++ b/src/cli/cli_network_data.hpp
@@ -77,9 +77,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        An array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_srp_client.hpp b/src/cli/cli_srp_client.hpp
index 9b9ea4237..9316c4278 100644
--- a/src/cli/cli_srp_client.hpp
+++ b/src/cli/cli_srp_client.hpp
@@ -66,9 +66,15 @@ public:
     SrpClient(otInstance *aInstance, OutputImplementer &aOutputImplementer);
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        A pointer an array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_srp_server.hpp b/src/cli/cli_srp_server.hpp
index 6d179d2a9..831327c3b 100644
--- a/src/cli/cli_srp_server.hpp
+++ b/src/cli/cli_srp_server.hpp
@@ -67,12 +67,15 @@ public:
     }
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        A pointer to an array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
      *
-     * @retval  OT_ERROR_NONE  Successfully executed the CLI command.
-     * @retval  ...            Failed to execute the CLI command.
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_tcp.hpp b/src/cli/cli_tcp.hpp
index 9af459dbe..a10570a66 100644
--- a/src/cli/cli_tcp.hpp
+++ b/src/cli/cli_tcp.hpp
@@ -74,9 +74,15 @@ public:
     TcpExample(otInstance *aInstance, OutputImplementer &aOutputImplementer);
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs   An array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);
diff --git a/src/cli/cli_udp.hpp b/src/cli/cli_udp.hpp
index 55996c7ec..14003e14b 100644
--- a/src/cli/cli_udp.hpp
+++ b/src/cli/cli_udp.hpp
@@ -62,9 +62,15 @@ public:
     UdpExample(otInstance *aInstance, OutputImplementer &aOutputImplementer);
 
     /**
-     * This method interprets a list of CLI arguments.
+     * This method processes a CLI sub-command.
      *
-     * @param[in]  aArgs        An array of command line arguments.
+     * @param[in]  aArgs     An array of command line arguments.
+     *
+     * @retval OT_ERROR_NONE              Successfully executed the CLI command.
+     * @retval OT_ERROR_PENDING           The CLI command was successfully started but final result is pending.
+     * @retval OT_ERROR_INVALID_COMMAND   Invalid or unknown CLI command.
+     * @retval OT_ERROR_INVALID_ARGS      Invalid arguments.
+     * @retval ...                        Error during execution of the CLI command.
      *
      */
     otError Process(Arg aArgs[]);