diff --git a/src/lib/Hydra/Helper/AddBuilds.pm b/src/lib/Hydra/Helper/AddBuilds.pm
index f38737d3..9e3ddfd2 100644
--- a/src/lib/Hydra/Helper/AddBuilds.pm
+++ b/src/lib/Hydra/Helper/AddBuilds.pm
@@ -19,14 +19,16 @@ use Hydra::Helper::CatalystUtils;
 
 our @ISA = qw(Exporter);
 our @EXPORT = qw(
+    validateDeclarativeJobset
+    createJobsetInputsRowAndData
     updateDeclarativeJobset
     handleDeclarativeJobsetBuild
     handleDeclarativeJobsetJson
 );
 
 
-sub updateDeclarativeJobset {
-    my ($db, $project, $jobsetName, $declSpec) = @_;
+sub validateDeclarativeJobset {
+    my ($config, $project, $jobsetName, $declSpec) = @_;
 
     my @allowed_keys = qw(
         enabled
@@ -62,16 +64,39 @@ sub updateDeclarativeJobset {
         }
     }
 
+    my $enable_dynamic_run_command = defined $update{enable_dynamic_run_command} ? 1 : 0;
+    if ($enable_dynamic_run_command
+        && !($config->{dynamicruncommand}->{enable}
+            && $project->{enable_dynamic_run_command}))
+    {
+        die "Dynamic RunCommand is not enabled by the server or the parent project.";
+    }
+
+    return %update;
+}
+
+sub createJobsetInputsRowAndData {
+    my ($name, $declSpec) = @_;
+    my $data = $declSpec->{"inputs"}->{$name};
+    my $row = {
+        name => $name,
+        type => $data->{type}
+    };
+    $row->{emailresponsible} = $data->{emailresponsible} // 0;
+
+    return ($row, $data);
+}
+
+sub updateDeclarativeJobset {
+    my ($config, $db, $project, $jobsetName, $declSpec) = @_;
+
+    my %update = validateDeclarativeJobset($config, $project, $jobsetName, $declSpec);
+
     $db->txn_do(sub {
         my $jobset = $project->jobsets->update_or_create(\%update);
         $jobset->jobsetinputs->delete;
         foreach my $name (keys %{$declSpec->{"inputs"}}) {
-            my $data = $declSpec->{"inputs"}->{$name};
-            my $row = {
-                name => $name,
-                type => $data->{type}
-            };
-            $row->{emailresponsible} = $data->{emailresponsible} // 0;
+            my ($row, $data) = createJobsetInputsRowAndData($name, $declSpec);
             my $input = $jobset->jobsetinputs->create($row);
             $input->jobsetinputalts->create({altnr => 0, value => $data->{value}});
         }
@@ -82,6 +107,7 @@ sub updateDeclarativeJobset {
 
 sub handleDeclarativeJobsetJson {
     my ($db, $project, $declSpec) = @_;
+    my $config = getHydraConfig();
     $db->txn_do(sub {
             my @kept = keys %$declSpec;
             push @kept, ".jobsets";
@@ -89,7 +115,7 @@ sub handleDeclarativeJobsetJson {
             foreach my $jobsetName (keys %$declSpec) {
                 my $spec = $declSpec->{$jobsetName};
                 eval {
-                    updateDeclarativeJobset($db, $project, $jobsetName, $spec);
+                    updateDeclarativeJobset($config, $db, $project, $jobsetName, $spec);
                     1;
                 } or do {
                     print STDERR "ERROR: failed to process declarative jobset ", $project->name, ":${jobsetName}, ", $@, "\n";
diff --git a/src/script/hydra-eval-jobset b/src/script/hydra-eval-jobset
index de437ecd..a9bd7355 100755
--- a/src/script/hydra-eval-jobset
+++ b/src/script/hydra-eval-jobset
@@ -617,7 +617,7 @@ sub checkJobsetWrapped {
             } else {
                 # Update the jobset with the spec's inputs, and the continue
                 # evaluating the .jobsets jobset.
-                updateDeclarativeJobset($db, $project, ".jobsets", $declSpec);
+                updateDeclarativeJobset($config, $db, $project, ".jobsets", $declSpec);
                 $jobset->discard_changes;
                 $inputInfo->{"declInput"} = [ $declInput ];
                 $inputInfo->{"projectName"} = [ fetchInput($plugins, $db, $project, $jobset, "projectName", "string", $project->name, 0) ];
diff --git a/t/Helper/AddBuilds/dynamic-disabled.t b/t/Helper/AddBuilds/dynamic-disabled.t
new file mode 100644
index 00000000..0507b03e
--- /dev/null
+++ b/t/Helper/AddBuilds/dynamic-disabled.t
@@ -0,0 +1,85 @@
+use strict;
+use warnings;
+use Setup;
+use Test2::V0;
+
+require Catalyst::Test;
+use HTTP::Request::Common qw(POST PUT GET DELETE);
+use JSON::MaybeXS qw(decode_json encode_json);
+use Hydra::Helper::AddBuilds qw(validateDeclarativeJobset);
+use Hydra::Helper::Nix qw(getHydraConfig);
+
+my $ctx = test_context();
+
+sub makeJobsetSpec {
+    my ($dynamic) = @_;
+
+    return {
+        enabled => 2,
+        enable_dynamic_run_command => $dynamic ? JSON::MaybeXS::true : undef,
+        visible => JSON::MaybeXS::true,
+        name => "job",
+        type => 1,
+        description => "test jobset",
+        flake => "github:nixos/nix",
+        checkinterval => 0,
+        schedulingshares => 100,
+        keepnr => 3
+    };
+};
+
+subtest "validate declarative jobset with dynamic RunCommand disabled by server" => sub {
+    my $config = getHydraConfig();
+
+    subtest "project enabled dynamic runcommand, declarative jobset enabled dynamic runcommand" => sub {
+        like(
+            dies {
+              validateDeclarativeJobset(
+                  $config,
+                  { enable_dynamic_run_command => 1 },
+                  "test-jobset",
+                  makeJobsetSpec(JSON::MaybeXS::true),
+              ),
+            },
+            qr/Dynamic RunCommand is not enabled/,
+        );
+    };
+
+    subtest "project enabled dynamic runcommand, declarative jobset disabled dynamic runcommand" => sub {
+        ok(
+            validateDeclarativeJobset(
+                $config,
+                { enable_dynamic_run_command => 1 },
+                "test-jobset",
+                makeJobsetSpec(JSON::MaybeXS::false)
+            ),
+        );
+    };
+
+    subtest "project disabled dynamic runcommand, declarative jobset enabled dynamic runcommand" => sub {
+        like(
+            dies {
+              validateDeclarativeJobset(
+                  $config,
+                  { enable_dynamic_run_command => 0 },
+                  "test-jobset",
+                  makeJobsetSpec(JSON::MaybeXS::true),
+              ),
+            },
+            qr/Dynamic RunCommand is not enabled/,
+        );
+    };
+
+    subtest "project disabled dynamic runcommand, declarative jobset disabled dynamic runcommand" => sub {
+        ok(
+            validateDeclarativeJobset(
+                $config,
+                { enable_dynamic_run_command => 0 },
+                "test-jobset",
+                makeJobsetSpec(JSON::MaybeXS::false)
+            ),
+        );
+    };
+};
+
+done_testing;
diff --git a/t/Helper/AddBuilds/dynamic-enabled.t b/t/Helper/AddBuilds/dynamic-enabled.t
new file mode 100644
index 00000000..d2f5a386
--- /dev/null
+++ b/t/Helper/AddBuilds/dynamic-enabled.t
@@ -0,0 +1,88 @@
+use strict;
+use warnings;
+use Setup;
+use Test2::V0;
+
+require Catalyst::Test;
+use HTTP::Request::Common qw(POST PUT GET DELETE);
+use JSON::MaybeXS qw(decode_json encode_json);
+use Hydra::Helper::AddBuilds qw(validateDeclarativeJobset);
+use Hydra::Helper::Nix qw(getHydraConfig);
+
+my $ctx = test_context(
+    hydra_config => q|
+    <dynamicruncommand>
+    enable = 1
+    </dynamicruncommand>
+    |
+);
+
+sub makeJobsetSpec {
+    my ($dynamic) = @_;
+
+    return {
+        enabled => 2,
+        enable_dynamic_run_command => $dynamic ? JSON::MaybeXS::true : undef,
+        visible => JSON::MaybeXS::true,
+        name => "job",
+        type => 1,
+        description => "test jobset",
+        flake => "github:nixos/nix",
+        checkinterval => 0,
+        schedulingshares => 100,
+        keepnr => 3
+    };
+};
+
+subtest "validate declarative jobset with dynamic RunCommand enabled by server" => sub {
+    my $config = getHydraConfig();
+
+    subtest "project enabled dynamic runcommand, declarative jobset enabled dynamic runcommand" => sub {
+        ok(
+            validateDeclarativeJobset(
+                $config,
+                { enable_dynamic_run_command => 1 },
+                "test-jobset",
+                makeJobsetSpec(JSON::MaybeXS::true)
+            ),
+        );
+    };
+
+    subtest "project enabled dynamic runcommand, declarative jobset disabled dynamic runcommand" => sub {
+        ok(
+            validateDeclarativeJobset(
+                $config,
+                { enable_dynamic_run_command => 1 },
+                "test-jobset",
+                makeJobsetSpec(JSON::MaybeXS::false)
+            ),
+        );
+    };
+
+    subtest "project disabled dynamic runcommand, declarative jobset enabled dynamic runcommand" => sub {
+        like(
+            dies {
+              validateDeclarativeJobset(
+                  $config,
+                  { enable_dynamic_run_command => 0 },
+                  "test-jobset",
+                  makeJobsetSpec(JSON::MaybeXS::true),
+              ),
+            },
+            qr/Dynamic RunCommand is not enabled/,
+        );
+    };
+
+    subtest "project disabled dynamic runcommand, declarative jobset disabled dynamic runcommand" => sub {
+        ok(
+            validateDeclarativeJobset(
+                $config,
+                { enable_dynamic_run_command => 0 },
+                "test-jobset",
+                makeJobsetSpec(JSON::MaybeXS::false)
+            ),
+        );
+    };
+};
+
+done_testing;