diff --git a/Cargo.toml b/Cargo.toml
index f2a6d8818..367ff9ed2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -69,7 +69,7 @@ phf = { version = "0.11.2", features = ["macros"] }
 
 [lib]
 path = "src/lib.rs"
-name = "zenohcd"
+name = "zenohc"
 crate-type = ["cdylib", "staticlib"]
 doctest = false
 
diff --git a/examples/parse_args.h b/examples/parse_args.h
index 1b0b52b12..7708ba6b5 100644
--- a/examples/parse_args.h
+++ b/examples/parse_args.h
@@ -137,7 +137,7 @@ char** parse_pos_args(const int argc, char** argv, const size_t nb_args) {
  * @param config_key: zenoh configuration key under which the parsed values will be inserted
  */
 void parse_zenoh_json_list_config(int argc, char** argv, const char* opt, const char* config_key,
-                                  const z_owned_config_t* config) {
+                                  z_owned_config_t* config) {
     char* buf = (char*)calloc(1, sizeof(char));
     const char* value = parse_opt(argc, argv, opt, true);
     while (value) {
@@ -158,7 +158,7 @@ void parse_zenoh_json_list_config(int argc, char** argv, const char* opt, const
         char* json_list = (char*)malloc(json_list_len);
         snprintf(json_list, json_list_len, "[%s]", buf);
         // insert in config
-        if (zc_config_insert_json(z_loan(*config), config_key, json_list) < 0) {
+        if (zc_config_insert_json(z_loan_mut(*config), config_key, json_list) < 0) {
             printf(
                 "Couldn't insert value `%s` in configuration at `%s`\n`%s` is either not a JSON-serialized list of "
                 "strings, or values within the list do not respect expected format for `%s`\n",
@@ -183,6 +183,8 @@ void parse_zenoh_common_args(const int argc, char** argv, z_owned_config_t* conf
     const char* config_file = parse_opt(argc, argv, "c", true);
     if (config_file) {
         zc_config_from_file(config, config_file);
+    } else {
+        z_config_default(config);
     }
     // -m: The Zenoh session mode [default: peer].
     const char* mode = parse_opt(argc, argv, "m", true);
@@ -190,7 +192,7 @@ void parse_zenoh_common_args(const int argc, char** argv, z_owned_config_t* conf
         size_t buflen = strlen(mode) + 3;  // mode + quotes + nullbyte
         char* buf = (char*)malloc(buflen);
         snprintf(buf, buflen, "'%s'", mode);
-        if (zc_config_insert_json(z_loan(*config), Z_CONFIG_MODE_KEY, buf) < 0) {
+        if (zc_config_insert_json(z_loan_mut(*config), Z_CONFIG_MODE_KEY, buf) < 0) {
             printf(
                 "Couldn't insert value `%s` in configuration at `%s`. Value must be one of: 'client', 'peer' or "
                 "'router'\n",
@@ -206,7 +208,8 @@ void parse_zenoh_common_args(const int argc, char** argv, z_owned_config_t* conf
     parse_zenoh_json_list_config(argc, argv, "l", Z_CONFIG_LISTEN_KEY, config);
     // --no-multicast-scrouting: Disable the multicast-based scouting mechanism.
     const char* no_multicast_scouting = parse_opt(argc, argv, "no-multicast-scouting", false);
-    if (no_multicast_scouting && zc_config_insert_json(z_loan(*config), Z_CONFIG_MULTICAST_SCOUTING_KEY, "false") < 0) {
+    if (no_multicast_scouting &&
+        zc_config_insert_json(z_loan_mut(*config), Z_CONFIG_MULTICAST_SCOUTING_KEY, "false") < 0) {
         printf("Couldn't disable multicast-scouting.\n");
         exit(-1);
     }
diff --git a/examples/z_delete.c b/examples/z_delete.c
index d0ea1712c..67c0f083a 100644
--- a/examples/z_delete.c
+++ b/examples/z_delete.c
@@ -26,7 +26,6 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
diff --git a/examples/z_get.c b/examples/z_get.c
index 6dc8f6342..c26b9cbb9 100644
--- a/examples/z_get.c
+++ b/examples/z_get.c
@@ -28,7 +28,6 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     z_view_keyexpr_t keyexpr;
diff --git a/examples/z_get_liveliness.c b/examples/z_get_liveliness.c
index f4ad98ec8..60e101416 100644
--- a/examples/z_get_liveliness.c
+++ b/examples/z_get_liveliness.c
@@ -26,7 +26,6 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     z_view_keyexpr_t keyexpr;
diff --git a/examples/z_info.c b/examples/z_info.c
index 59fd032b2..be40b5254 100644
--- a/examples/z_info.c
+++ b/examples/z_info.c
@@ -27,7 +27,6 @@ void print_zid(const z_id_t* id, void* ctx) {
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
diff --git a/examples/z_liveliness.c b/examples/z_liveliness.c
index 92fe6f159..de0dd95db 100644
--- a/examples/z_liveliness.c
+++ b/examples/z_liveliness.c
@@ -26,7 +26,6 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     z_view_keyexpr_t keyexpr;
diff --git a/examples/z_non_blocking_get.c b/examples/z_non_blocking_get.c
index c8a3ea9a1..1f834d769 100644
--- a/examples/z_non_blocking_get.c
+++ b/examples/z_non_blocking_get.c
@@ -26,11 +26,10 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     z_view_keyexpr_t keyexpr;
-    if (z_view_keyexpr_from_str(&keyexpr, args.keyexpr) < 0) {
+    if (z_view_keyexpr_from_str(&keyexpr, args.selector) < 0) {
         printf("%s is not a valid key expression", args.selector);
         exit(-1);
     }
diff --git a/examples/z_ping.c b/examples/z_ping.c
index 97162c9c2..436feeb6d 100644
--- a/examples/z_ping.c
+++ b/examples/z_ping.c
@@ -32,14 +32,8 @@ struct args_t {
 struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
-    struct args_t args = parse_args(argc, argv, &config);
-
     z_owned_config_t config;
-    if (args.config_path) {
-        zc_config_from_file(&config, args.config_path);
-    } else {
-        z_config_default(&config);
-    }
+    struct args_t args = parse_args(argc, argv, &config);
 
     z_mutex_init(&mutex);
     z_condvar_init(&cond);
diff --git a/examples/z_pong.c b/examples/z_pong.c
index 1e6c4a36e..f58a3fe96 100644
--- a/examples/z_pong.c
+++ b/examples/z_pong.c
@@ -25,12 +25,6 @@ int main(int argc, char** argv) {
     z_owned_config_t config;
     parse_args(argc, argv, &config);
 
-    if (args.config_path) {
-        zc_config_from_file(&config, args.config_path);
-    } else {
-        z_config_default(&config);
-    }
-
     z_owned_session_t session;
     z_open(&session, z_move(config));
     z_view_keyexpr_t ping;
diff --git a/examples/z_pub.c b/examples/z_pub.c
index 29ec2ccc4..6aa478a30 100644
--- a/examples/z_pub.c
+++ b/examples/z_pub.c
@@ -27,6 +27,7 @@ struct args_t {
 };
 struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
+#ifdef UNSTABLE
 void matching_status_handler(const zc_matching_status_t* matching_status, void* arg) {
     if (matching_status->matching) {
         printf("Subscriber matched\n");
@@ -38,7 +39,6 @@ void matching_status_handler(const zc_matching_status_t* matching_status, void*
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
@@ -65,7 +65,7 @@ int main(int argc, char** argv) {
         zc_publisher_matching_listener_declare(&listener, z_loan(pub), z_move(callback));
     }
 #else
-    if (add_matching_listener) {
+    if (args.add_matching_listener) {
         printf("To enable matching listener you must compile Zenoh-c with unstable feature support!\n");
         exit(-1);
     }
@@ -86,7 +86,7 @@ int main(int argc, char** argv) {
         z_publisher_put(z_loan(pub), z_move(payload), &options);
     }
 #ifdef UNSTABLE
-    if (add_matching_listener) {
+    if (args.add_matching_listener) {
         zc_publisher_matching_listener_undeclare(z_move(listener));
     }
 #endif
diff --git a/examples/z_pub_attachment.c b/examples/z_pub_attachment.c
index b177777d4..ed947262b 100644
--- a/examples/z_pub_attachment.c
+++ b/examples/z_pub_attachment.c
@@ -51,7 +51,6 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
diff --git a/examples/z_pub_cache.c b/examples/z_pub_cache.c
index c2796b6e8..e2de9caf9 100644
--- a/examples/z_pub_cache.c
+++ b/examples/z_pub_cache.c
@@ -30,7 +30,6 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     if (zc_config_insert_json(z_loan_mut(config), Z_CONFIG_ADD_TIMESTAMP_KEY, "true") < 0) {
diff --git a/examples/z_pub_shm.c b/examples/z_pub_shm.c
index 1bc29c167..461816aca 100644
--- a/examples/z_pub_shm.c
+++ b/examples/z_pub_shm.c
@@ -29,7 +29,6 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
diff --git a/examples/z_pub_thr.c b/examples/z_pub_thr.c
index 3b6c13724..ebd1d7f0f 100644
--- a/examples/z_pub_thr.c
+++ b/examples/z_pub_thr.c
@@ -26,7 +26,6 @@ int main(int argc, char** argv) {
     char* keyexpr = "test/thr";
 
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
     uint8_t* value = (uint8_t*)z_malloc(args.size);
     memset(value, 1, args.size);
@@ -50,8 +49,9 @@ int main(int argc, char** argv) {
     }
 
     printf("Press CTRL-C to quit...\n");
+    z_owned_bytes_t payload;
     while (1) {
-        z_bytes_from_buf(&payload, value, len, NULL, NULL);
+        z_bytes_from_buf(&payload, value, args.size, NULL, NULL);
         z_publisher_put(z_loan(pub), z_move(payload), NULL);
     }
 
diff --git a/examples/z_pull.c b/examples/z_pull.c
index 09b9db274..722b67f12 100644
--- a/examples/z_pull.c
+++ b/examples/z_pull.c
@@ -38,7 +38,6 @@ void handle_sample(const z_loaned_sample_t* sample) {
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
@@ -52,9 +51,9 @@ int main(int argc, char** argv) {
     z_owned_ring_handler_sample_t handler;
     z_owned_closure_sample_t closure;
 
-    printf("Declaring Subscriber on '%s'...\n", expr);
+    printf("Declaring Subscriber on '%s'...\n", args.keyexpr);
     z_view_keyexpr_t ke;
-    z_view_keyexpr_from_str(&ke, expr);
+    z_view_keyexpr_from_str(&ke, args.keyexpr);
     z_owned_subscriber_t sub;
 
     if (z_declare_subscriber(&sub, z_loan(s), z_loan(ke), z_move(closure), NULL) < 0) {
diff --git a/examples/z_put.c b/examples/z_put.c
index 89d24c624..9117be365 100644
--- a/examples/z_put.c
+++ b/examples/z_put.c
@@ -27,10 +27,8 @@ struct args_t {
 struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 int main(int argc, char** argv) {
-    struct args_t args = parse_args(argc, argv, &config);
-
     z_owned_config_t config;
-    z_config_default(&config);
+    struct args_t args = parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
     z_owned_session_t s;
diff --git a/examples/z_query_sub.c b/examples/z_query_sub.c
index bec0da0ec..e17a48b43 100644
--- a/examples/z_query_sub.c
+++ b/examples/z_query_sub.c
@@ -25,17 +25,20 @@ struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
 
 const char* kind_to_str(z_sample_kind_t kind);
 
-void data_handler(const z_sample_t* sample, void* arg) {
-    z_owned_str_t keystr;
-    z_keyexpr_to_string(&keystr, sample->keyexpr);
-    printf(">> [Subscriber] Received %s ('%s': '%.*s')\n", kind_to_str(sample->kind), z_loan(keystr),
-           (int)sample->payload.len, sample->payload.start);
-    z_drop(z_move(keystr));
+void data_handler(const z_loaned_sample_t* sample, void* arg) {
+    z_view_string_t key_string;
+    z_keyexpr_as_view_string(z_sample_keyexpr(sample), &key_string);
+    z_owned_string_t payload_string;
+    z_bytes_deserialize_into_string(z_sample_payload(sample), &payload_string);
+
+    printf(">> [Subscriber] Received %s ('%.*s': '%.*s')\n", kind_to_str(z_sample_kind(sample)),
+           (int)z_string_len(z_loan(key_string)), z_string_data(z_loan(key_string)),
+           (int)z_string_len(z_loan(payload_string)), z_string_data(z_loan(payload_string)));
+    z_drop(z_move(payload_string));
 }
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
@@ -48,12 +51,13 @@ int main(int argc, char** argv) {
     z_view_keyexpr_t ke;
     z_view_keyexpr_from_str(&ke, args.keyexpr);
 
-    ze_querying_subscriber_options_t sub_opts = ze_querying_subscriber_options_default();
+    ze_querying_subscriber_options_t sub_opts;
+    ze_querying_subscriber_options_default(&sub_opts);
     z_owned_closure_sample_t callback;
     z_closure(&callback, data_handler, NULL, NULL);
     printf("Declaring querying subscriber on '%s'...\n", args.keyexpr);
     ze_owned_querying_subscriber_t sub;
-    if (ze_declare_querying_subscriber(z_loan(s), z_loan(ke), z_move(callback), &sub_opts) < 0) {
+    if (ze_declare_querying_subscriber(&sub, z_loan(s), z_loan(ke), z_move(callback), &sub_opts) < 0) {
         printf("Unable to declare querying subscriber.\n");
         exit(-1);
     }
diff --git a/examples/z_queryable.c b/examples/z_queryable.c
index 62a3459e9..5f5f48b71 100644
--- a/examples/z_queryable.c
+++ b/examples/z_queryable.c
@@ -21,6 +21,15 @@
 #define DEFAULT_VALUE "Queryable from C!"
 z_view_keyexpr_t ke;
 
+struct args_t {
+    char *keyexpr;  // -k
+    char *value;    // -v
+};
+
+char *value;
+
+struct args_t parse_args(int argc, char **argv, z_owned_config_t *config);
+
 void query_handler(const z_loaned_query_t *query, void *context) {
     z_view_string_t key_string;
     z_keyexpr_as_view_string(z_query_keyexpr(query), &key_string);
@@ -55,7 +64,6 @@ void query_handler(const z_loaned_query_t *query, void *context) {
 
 int main(int argc, char **argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
     value = args.value;
 
diff --git a/examples/z_queryable_with_channels.c b/examples/z_queryable_with_channels.c
index c2d334a07..4e8b6b856 100644
--- a/examples/z_queryable_with_channels.c
+++ b/examples/z_queryable_with_channels.c
@@ -30,7 +30,6 @@ z_view_keyexpr_t ke;
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
 
     printf("Opening session...\n");
@@ -41,7 +40,7 @@ int main(int argc, char** argv) {
     }
 
     if (z_view_keyexpr_from_str(&ke, args.keyexpr) < 0) {
-        printf("%s is not a valid key expression", keyexpr);
+        printf("%s is not a valid key expression", args.keyexpr);
         exit(-1);
     }
 
@@ -84,7 +83,7 @@ int main(int argc, char** argv) {
         z_query_reply_options_default(&options);
 
         z_owned_bytes_t reply_payload;
-        z_bytes_from_static_str(&reply_payload, value);
+        z_bytes_from_static_str(&reply_payload, args.value);
         z_query_reply(query, z_loan(ke), z_move(reply_payload), &options);
         z_drop(z_move(oquery));
     }
diff --git a/examples/z_sub.c b/examples/z_sub.c
index 1834b705a..41dfdeff5 100644
--- a/examples/z_sub.c
+++ b/examples/z_sub.c
@@ -40,7 +40,6 @@ void data_handler(const z_loaned_sample_t *sample, void *arg) {
 
 int main(int argc, char **argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
     z_view_keyexpr_t ke;
     z_view_keyexpr_from_str(&ke, args.keyexpr);
diff --git a/examples/z_sub_attachment.c b/examples/z_sub_attachment.c
index 3705dc0da..20cef431e 100644
--- a/examples/z_sub_attachment.c
+++ b/examples/z_sub_attachment.c
@@ -23,6 +23,7 @@ struct args_t {
     char* keyexpr;  // -k
 };
 struct args_t parse_args(int argc, char** argv, z_owned_config_t* config);
+const char* kind_to_str(z_sample_kind_t kind);
 
 void data_handler(const z_loaned_sample_t* sample, void* arg) {
     z_view_string_t key_string;
@@ -63,7 +64,6 @@ void data_handler(const z_loaned_sample_t* sample, void* arg) {
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
     z_view_keyexpr_t ke;
     z_view_keyexpr_from_str(&ke, args.keyexpr);
diff --git a/examples/z_sub_liveliness.c b/examples/z_sub_liveliness.c
index 83a83ed34..bb2d4fc0f 100644
--- a/examples/z_sub_liveliness.c
+++ b/examples/z_sub_liveliness.c
@@ -40,11 +40,10 @@ void data_handler(const z_loaned_sample_t* sample, void* arg) {
 
 int main(int argc, char** argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     struct args_t args = parse_args(argc, argv, &config);
     z_view_keyexpr_t ke;
-    if (z_view_keyexpr_from_str(&ke, keyexpr) < 0) {
-        printf("%s is not a valid key expression\n", keyexpr);
+    if (z_view_keyexpr_from_str(&ke, args.keyexpr) < 0) {
+        printf("%s is not a valid key expression\n", args.keyexpr);
         exit(-1);
     }
 
diff --git a/examples/z_sub_thr.c b/examples/z_sub_thr.c
index e380711cf..75367f065 100644
--- a/examples/z_sub_thr.c
+++ b/examples/z_sub_thr.c
@@ -64,7 +64,6 @@ void drop_stats(void *context) {
 
 int main(int argc, char **argv) {
     z_owned_config_t config;
-    z_config_default(&config);
     parse_args(argc, argv, &config);
 
 #ifdef SHARED_MEMORY