diff --git a/blockchain/parity/restapi/custom/api.pm b/blockchain/parity/restapi/custom/api.pm
new file mode 100644
index 000000000..d792c57d8
--- /dev/null
+++ b/blockchain/parity/restapi/custom/api.pm
@@ -0,0 +1,187 @@
+#
+# Copyright 2020 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package blockchain::parity::restapi::custom::api;
+
+use strict;
+use warnings;
+use centreon::plugins::http;
+use JSON;
+
+sub new {
+    my ($class, %options) = @_;
+    my $self  = {};
+    bless $self, $class;
+
+    if (!defined($options{output})) {
+        print "Class Custom: Need to specify 'output' argument.\n";
+        exit 3;
+    }
+    if (!defined($options{options})) {
+        $options{output}->add_option_msg(short_msg => "Class Custom: Need to specify 'options' argument.");
+        $options{output}->option_exit();
+    }
+    
+    if (!defined($options{noptions})) {
+        $options{options}->add_options(arguments => {                      
+            "hostname:s"    => { name => 'hostname' },
+            "timeout:s"     => { name => 'timeout' },
+            "api-path:s"    => { name => 'api_path' },
+        });
+    }
+    $options{options}->add_help(package => __PACKAGE__, sections => 'REST API OPTIONS', once => 1);
+
+    $self->{output} = $options{output};
+    $self->{mode} = $options{mode};
+    $self->{http} = centreon::plugins::http->new(%options);
+    
+    return $self;
+}
+
+sub set_options {
+    my ($self, %options) = @_;
+
+    $self->{option_results} = $options{option_results};
+}
+
+sub set_defaults {
+    my ($self, %options) = @_;
+
+    foreach (keys %{$options{default}}) {
+        if ($_ eq $self->{mode}) {
+            for (my $i = 0; $i < scalar(@{$options{default}->{$_}}); $i++) {
+                foreach my $opt (keys %{$options{default}->{$_}[$i]}) {
+                    if (!defined($self->{option_results}->{$opt}[$i])) {
+                        $self->{option_results}->{$opt}[$i] = $options{default}->{$_}[$i]->{$opt};
+                    }
+                }
+            }
+        }
+    }
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+
+    $self->{hostname}   = (defined($self->{option_results}->{hostname})) ? $self->{option_results}->{hostname} : undef;
+    $self->{timeout}    = (defined($self->{option_results}->{timeout})) ? $self->{option_results}->{timeout} : 10;
+    $self->{api_path}   = (defined($self->{option_results}->{api_path})) ? $self->{option_results}->{api_path} : '/';
+ 
+    if (!defined($self->{hostname})) {
+        $self->{output}->add_option_msg(short_msg => "Need to specify hostname option.");
+        $self->{output}->option_exit();
+    }
+    return 0;
+}
+
+sub get_connection_infos {
+    my ($self, %options) = @_;
+    
+    return $self->{hostname}  . '_' . $self->{http}->get_port();
+}
+
+sub build_options_for_httplib {
+    my ($self, %options) = @_;
+
+    $self->{option_results}->{hostname} = $self->{hostname};
+    $self->{option_results}->{timeout} = $self->{timeout};
+    $self->{option_results}->{port} = 8545;
+    $self->{option_results}->{proto} = 'http';
+}
+
+sub settings {
+    my ($self, %options) = @_;
+
+    $self->build_options_for_httplib();
+    $self->{http}->add_header(key => 'Accept', value => 'application/json');
+    $self->{http}->add_header(key => 'Content-Type', value => 'application/json');
+    $self->{http}->set_options(%{$self->{option_results}});
+}
+
+sub request_api {
+    my ($self, %options) = @_;
+
+
+    $self->settings();
+
+    my $encoded;
+    eval {
+        $encoded = encode_json($options{query_form_post});
+    };
+    if ($@) {
+        $self->{output}->add_option_msg(short_msg => "Cannot encode json request");
+        $self->{output}->option_exit();
+    }
+    
+    my $content = $self->{http}->request(method => $options{method}, url_path => '/', query_form_post => $encoded,
+        critical_status => '', warning_status => '', unknown_status => '');
+
+    my $decoded;
+    eval {
+        $decoded = decode_json($content);
+    };
+    if ($@) {
+        $self->{output}->output_add(long_msg => $content, debug => 1);
+        $self->{output}->add_option_msg(short_msg => "Cannot decode json response");
+        $self->{output}->option_exit();
+    }
+    if ($self->{http}->get_code() != 200) {
+        $self->{output}->add_option_msg(short_msg => "Connection issue: " . $decoded->{msg});
+        $self->{output}->option_exit();
+    }
+
+    return $decoded;
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Parity node JSON WEBRPC
+
+=head1 SYNOPSIS
+
+Parity node JSON RPC API custom mode
+
+=head1 REST API OPTIONS
+
+=over 8
+
+=item B<--hostname>
+
+Parity node hostname or IP
+
+=item B<--timeout>
+
+Set HTTP timeout in seconds (Default: '10').
+
+=item B<--api-path>
+
+API base url path (Default: '/').
+
+=back
+
+=head1 DESCRIPTION
+
+B<custom>.
+
+=cut
diff --git a/blockchain/parity/restapi/mode/net.pm b/blockchain/parity/restapi/mode/net.pm
new file mode 100644
index 000000000..a1f94ffc3
--- /dev/null
+++ b/blockchain/parity/restapi/mode/net.pm
@@ -0,0 +1,133 @@
+#
+# Copyright 2020 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package blockchain::parity::restapi::mode::net;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+use centreon::plugins::templates::catalog_functions qw(catalog_status_threshold catalog_status_calc);
+
+sub custom_status_output {
+    my ($self, %options) = @_;
+
+    return sprintf(
+        'Listening status: %s ',
+        $self->{result_values}->{listening},
+    );
+}
+
+sub set_counters {
+    my ($self, %options) = @_;
+
+    $self->{maps_counters_type} = [
+        { name => 'network', cb_prefix_output => 'prefix_module_output', type => 0 },
+    ];
+
+    $self->{maps_counters}->{network} = [
+        { label => 'status', threshold => 0, set => {
+                key_values => [ { name => 'listening' } ],
+                closure_custom_calc => \&catalog_status_calc,
+                closure_custom_output => $self->can('custom_status_output'),
+                closure_custom_perfdata => sub { return 0; },
+                closure_custom_threshold_check => \&catalog_status_threshold
+            }
+        },
+        { label => 'peers', nlabel => 'parity.network.peers.count', set => {
+                key_values => [ { name => 'peers' } ],
+                output_template => "connected peers: %s ",
+                perfdatas => [
+                    { label => 'peer_count', value => 'peers_absolute', template => '%d', min => 0 }
+                ],                
+            }
+        },
+    ];
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, force_new_perfdata => 1);
+    bless $self, $class;
+
+    $options{options}->add_options(arguments => {
+        'unknown-status:s'  => { name => 'unknown_status', default => '' },
+        'warning-status:s'  => { name => 'warning_status', default => '' },
+        'critical-status:s' => { name => 'critical_status', default => '%{listening} !~ /true/' },
+    });
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::check_options(%options);
+
+    $self->change_macros(macros => ['unknown_status', 'warning_status', 'critical_status']);
+}
+
+sub prefix_module_output {
+    my ($self, %options) = @_;
+    
+    return "Parity network module: ";
+}
+
+sub manage_selection {
+    my ($self, %options) = @_;
+
+    my $query_form_post_listening = { method => 'net_listening', params => [],  id => "1", jsonrpc => "2.0" };
+    my $result_listening = $options{custom}->request_api(method => 'POST', query_form_post => $query_form_post_listening);
+    
+    my $query_form_post_peer = { method => 'net_peerCount', params => [],  id => "1", jsonrpc => "2.0" };
+    my $result_peer = $options{custom}->request_api(method => 'POST', query_form_post => $query_form_post_peer);
+
+    $self->{network} = { listening => $result_listening->{result},
+                         peers => hex($result_peer->{result}) }
+    
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check network module metrics parity (net_isListening, net_peerCount)
+
+=over 8
+
+=item B<--unknown-status>
+
+Set unknown threshold for listening status (Default: '').
+
+=item B<--warning-status>
+
+Set warning threshold for listening status (Default: '').
+
+=item B<--critical-status>
+
+Set critical threshold for listening status (Default: '%{listening} !~ /true/').
+
+=item B<--warning-peers> B<--critical-peers>
+
+Warning and Critical threhsold on the number of peer
+
+=back
+
+=cut
diff --git a/blockchain/parity/restapi/plugin.pm b/blockchain/parity/restapi/plugin.pm
new file mode 100644
index 000000000..cda22b0ac
--- /dev/null
+++ b/blockchain/parity/restapi/plugin.pm
@@ -0,0 +1,48 @@
+#
+# Copyright 2020 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package blockchain::parity::restapi::plugin;
+
+use strict;
+use warnings;
+use base qw(centreon::plugins::script_custom);
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+
+    $self->{version} = '0.1';
+    %{$self->{modes}} = ( 
+        'net' => 'blockchain::parity::restapi::mode::net',
+    );
+    $self->{custom_modes}{api} = 'blockchain::parity::restapi::custom::api';
+    return $self;
+}
+
+1;
+
+__END__
+
+=head1 PLUGIN DESCRIPTION
+
+Check Parity blockchain with JSON RPC
+
+=cut