diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index 5b802fb26304..997d38938238 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -746,6 +746,7 @@ in {
   varnish60 = handleTest ./varnish.nix { package = pkgs.varnish60; };
   varnish72 = handleTest ./varnish.nix { package = pkgs.varnish72; };
   vault = handleTest ./vault.nix {};
+  vault-agent = handleTest ./vault-agent.nix {};
   vault-dev = handleTest ./vault-dev.nix {};
   vault-postgresql = handleTest ./vault-postgresql.nix {};
   vaultwarden = handleTest ./vaultwarden.nix {};
diff --git a/nixos/tests/vault-agent.nix b/nixos/tests/vault-agent.nix
new file mode 100644
index 000000000000..dc86c829b67a
--- /dev/null
+++ b/nixos/tests/vault-agent.nix
@@ -0,0 +1,52 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "vault-agent";
+
+  nodes.machine = { config, pkgs, ... }: {
+    services.vault-agent.instances.example.settings = {
+      vault.address = config.environment.variables.VAULT_ADDR;
+
+      auto_auth = [{
+        method = [{
+          type = "token_file";
+          config.token_file_path = pkgs.writeText "vault-token" config.environment.variables.VAULT_TOKEN;
+        }];
+      }];
+
+      template = [{
+        contents = ''
+          {{- with secret "secret/example" }}
+          {{ .Data.data.key }}"
+          {{- end }}
+        '';
+        perms = "0600";
+        destination = "/example";
+      }];
+    };
+
+    services.vault = {
+      enable = true;
+      dev = true;
+      devRootTokenID = config.environment.variables.VAULT_TOKEN;
+    };
+
+    environment = {
+      systemPackages = [ pkgs.vault ];
+      variables = {
+        VAULT_ADDR = "http://localhost:8200";
+        VAULT_TOKEN = "root";
+      };
+    };
+  };
+
+  testScript = ''
+    machine.wait_for_unit("vault.service")
+    machine.wait_for_open_port(8200)
+
+    machine.wait_until_succeeds('vault kv put secret/example key=example')
+
+    machine.wait_for_unit("vault-agent-example.service")
+
+    machine.wait_for_file("/example")
+    machine.succeed('grep "example" /example')
+  '';
+})
diff --git a/pkgs/tools/security/vault/default.nix b/pkgs/tools/security/vault/default.nix
index 42eca27fb594..a6bb24e6fa3a 100644
--- a/pkgs/tools/security/vault/default.nix
+++ b/pkgs/tools/security/vault/default.nix
@@ -38,7 +38,7 @@ buildGoModule rec {
       --prefix PATH ${lib.makeBinPath [ gawk glibc ]}
   '';
 
-  passthru.tests = { inherit (nixosTests) vault vault-postgresql vault-dev; };
+  passthru.tests = { inherit (nixosTests) vault vault-postgresql vault-dev vault-agent; };
 
   meta = with lib; {
     homepage = "https://www.vaultproject.io/";