diff --git a/src/ui/public/agg_types/agg_params.js b/src/ui/public/agg_types/agg_params.js
index 22e85cf12a73a..9d49251b8fa90 100644
--- a/src/ui/public/agg_types/agg_params.js
+++ b/src/ui/public/agg_types/agg_params.js
@@ -7,6 +7,7 @@ import AggTypesParamTypesRegexProvider from 'ui/agg_types/param_types/regex';
 import AggTypesParamTypesStringProvider from 'ui/agg_types/param_types/string';
 import AggTypesParamTypesRawJsonProvider from 'ui/agg_types/param_types/raw_json';
 import AggTypesParamTypesBaseProvider from 'ui/agg_types/param_types/base';
+import AggTypesParamTypesScriptingLangProvider from 'ui/agg_types/param_types/script_lang';
 export default function AggParamsFactory(Private) {
 
 
@@ -16,6 +17,7 @@ export default function AggParamsFactory(Private) {
     regex: Private(AggTypesParamTypesRegexProvider),
     string: Private(AggTypesParamTypesStringProvider),
     json: Private(AggTypesParamTypesRawJsonProvider),
+    script_lang: Private(AggTypesParamTypesScriptingLangProvider),
     _default: Private(AggTypesParamTypesBaseProvider)
   };
 
diff --git a/src/ui/public/agg_types/controls/script_lang.html b/src/ui/public/agg_types/controls/script_lang.html
new file mode 100644
index 0000000000000..2c170e0e02e55
--- /dev/null
+++ b/src/ui/public/agg_types/controls/script_lang.html
@@ -0,0 +1,23 @@
+<div class="form-group" ng-controller="aggParam.controller as controller">
+  <label>{{ aggParam.name | label }}</label>
+
+  <!-- placeholder so that auto-select works right -->
+  <select
+    class="form-control"
+    ng-if="controller.loading"
+    disabled
+    required
+    ng-model="agg.params[aggParam.name]"
+  ></select>
+
+  <!-- only render if the controller is ready or auto-select won't work -->
+  <select
+    class="form-control"
+    ng-if="!controller.loading"
+    required
+    ng-model="agg.params[aggParam.name]"
+    auto-select-if-only-one="controller.scriptingLangs"
+    ng-options="scriptingLang as scriptingLang for scriptingLang in controller.scriptingLangs"
+  ></select>
+
+</div>
diff --git a/src/ui/public/agg_types/controls/text.html b/src/ui/public/agg_types/controls/text.html
new file mode 100644
index 0000000000000..d10fcf6b0de2a
--- /dev/null
+++ b/src/ui/public/agg_types/controls/text.html
@@ -0,0 +1,6 @@
+<div class="form-group">
+  <label>{{ aggParam.name | label }}</label>
+  <div>
+    <textarea type="text" ng-model="agg.params[aggParam.name]" class="form-control">
+  </div>
+</div>
diff --git a/src/ui/public/agg_types/index.js b/src/ui/public/agg_types/index.js
index ad7af3709460e..23a05e9d447a0 100644
--- a/src/ui/public/agg_types/index.js
+++ b/src/ui/public/agg_types/index.js
@@ -10,6 +10,7 @@ import AggTypesMetricsStdDeviationProvider from 'ui/agg_types/metrics/std_deviat
 import AggTypesMetricsCardinalityProvider from 'ui/agg_types/metrics/cardinality';
 import AggTypesMetricsPercentilesProvider from 'ui/agg_types/metrics/percentiles';
 import AggTypesMetricsPercentileRanksProvider from 'ui/agg_types/metrics/percentile_ranks';
+import AggTypesMetricsScriptedMetricProvider from 'ui/agg_types/metrics/scripted_metric';
 import AggTypesBucketsDateHistogramProvider from 'ui/agg_types/buckets/date_histogram';
 import AggTypesBucketsHistogramProvider from 'ui/agg_types/buckets/histogram';
 import AggTypesBucketsRangeProvider from 'ui/agg_types/buckets/range';
@@ -32,7 +33,8 @@ export default function AggTypeService(Private) {
       Private(AggTypesMetricsStdDeviationProvider),
       Private(AggTypesMetricsCardinalityProvider),
       Private(AggTypesMetricsPercentilesProvider),
-      Private(AggTypesMetricsPercentileRanksProvider)
+      Private(AggTypesMetricsPercentileRanksProvider),
+      Private(AggTypesMetricsScriptedMetricProvider)
     ],
     buckets: [
       Private(AggTypesBucketsDateHistogramProvider),
diff --git a/src/ui/public/agg_types/metrics/scripted_metric.js b/src/ui/public/agg_types/metrics/scripted_metric.js
new file mode 100644
index 0000000000000..5809ea19230e5
--- /dev/null
+++ b/src/ui/public/agg_types/metrics/scripted_metric.js
@@ -0,0 +1,49 @@
+import AggTypesMetricsMetricAggTypeProvider from 'ui/agg_types/metrics/metric_agg_type';
+import RegistryFieldFormatsProvider from 'ui/registry/field_formats';
+import textHtml from 'ui/agg_types/controls/text.html';
+
+export default function AggTypesMetricsScriptedMetricProvider(Private) {
+  let MetricAggType = Private(AggTypesMetricsMetricAggTypeProvider);
+  let fieldFormats = Private(RegistryFieldFormatsProvider);
+
+  const buildScriptParam = function (scriptName) {
+    return {
+      name: scriptName,
+      type: 'string',
+      editor: textHtml,
+      write:function (aggConfig, output) {
+        const inlineScript = aggConfig.params[scriptName];
+        if (!inlineScript) {
+          return;
+        }
+
+        output.params[scriptName] = {
+          lang: aggConfig.params.lang,
+          inline: inlineScript
+        };
+      }
+    };
+  };
+
+  return new MetricAggType({
+    name: 'scripted_metric',
+    title: 'Scripted Metric',
+    makeLabel: function () {
+      return 'Scripted Metric';
+    },
+    getFormat: function () {
+      return fieldFormats.getDefaultInstance('number');
+    },
+    params: [
+      {
+        name: 'lang',
+        type: 'script_lang',
+        write: function () {}
+      },
+      buildScriptParam('init_script'),
+      buildScriptParam('map_script'),
+      buildScriptParam('combine_script'),
+      buildScriptParam('reduce_script')
+    ]
+  });
+};
diff --git a/src/ui/public/agg_types/param_types/script_lang.js b/src/ui/public/agg_types/param_types/script_lang.js
new file mode 100644
index 0000000000000..2229ddfa6c74f
--- /dev/null
+++ b/src/ui/public/agg_types/param_types/script_lang.js
@@ -0,0 +1,31 @@
+import _ from 'lodash';
+import editorHtml from 'ui/agg_types/controls/script_lang.html';
+import StringParamTypesBaseProvider from 'ui/agg_types/param_types/string';
+import { GetScriptingLangsProvider } from 'ui/scripting_langs';
+
+export default function ScriptingLangAggParamFactory(Private) {
+  const StringAggParam = Private(StringParamTypesBaseProvider);
+  const getScriptingLangs = Private(GetScriptingLangsProvider);
+
+  class ScriptingLangAggParam extends StringAggParam {
+    constructor(config) {
+      super(config);
+
+      this.default = 'painless';
+      this.editor = editorHtml;
+      this.controller = class ScriptingLangParamController {
+        constructor($scope) {
+          this.loading = true;
+
+          getScriptingLangs()
+            .then(scriptingLangs => {
+              this.loading = false;
+              this.scriptingLangs = scriptingLangs;
+            });
+        };
+      };
+    }
+  }
+
+  return ScriptingLangAggParam;
+};
diff --git a/src/ui/public/field_editor/field_editor.js b/src/ui/public/field_editor/field_editor.js
index 71a81d1226903..16c07a3d84684 100644
--- a/src/ui/public/field_editor/field_editor.js
+++ b/src/ui/public/field_editor/field_editor.js
@@ -6,18 +6,17 @@ import RegistryFieldFormatsProvider from 'ui/registry/field_formats';
 import IndexPatternsFieldProvider from 'ui/index_patterns/_field';
 import uiModules from 'ui/modules';
 import fieldEditorTemplate from 'ui/field_editor/field_editor.html';
-import chrome from 'ui/chrome';
 import IndexPatternsCastMappingTypeProvider from 'ui/index_patterns/_cast_mapping_type';
 import { scriptedFields as docLinks } from '../documentation_links/documentation_links';
 import './field_editor.less';
-import { GetEnabledScriptingLanguagesProvider, getSupportedScriptingLanguages } from '../scripting_languages';
+import { GetScriptingLangsProvider } from 'ui/scripting_langs';
 
 uiModules
 .get('kibana', ['colorpicker.module'])
 .directive('fieldEditor', function (Private, $sce) {
   const fieldFormats = Private(RegistryFieldFormatsProvider);
   const Field = Private(IndexPatternsFieldProvider);
-  const getEnabledScriptingLanguages = Private(GetEnabledScriptingLanguagesProvider);
+  const getScriptingLangs = Private(GetScriptingLangsProvider);
 
   const fieldTypesByLang = {
     painless: ['number', 'string', 'date', 'boolean'],
@@ -33,7 +32,7 @@ uiModules
       getField: '&field'
     },
     controllerAs: 'editor',
-    controller: function ($scope, Notifier, kbnUrl, $http, $q) {
+    controller: function ($scope, Notifier, kbnUrl, $http) {
       const self = this;
       const notify = new Notifier({ location: 'Field Editor' });
 
@@ -160,13 +159,6 @@ uiModules
         else return fieldFormats.getDefaultType(self.field.type);
       }
 
-      function getScriptingLangs() {
-        return getEnabledScriptingLanguages()
-        .then((enabledLanguages) => {
-          return _.intersection(enabledLanguages, getSupportedScriptingLanguages());
-        });
-      }
-
       function initDefaultFormat() {
         const def = Object.create(fieldFormats.getDefaultType(self.field.type));
 
diff --git a/src/ui/public/scripting_langs/scripting_langs.js b/src/ui/public/scripting_langs/scripting_langs.js
new file mode 100644
index 0000000000000..64a81484d092c
--- /dev/null
+++ b/src/ui/public/scripting_langs/scripting_langs.js
@@ -0,0 +1,16 @@
+import uiModules from 'ui/modules';
+import chrome from 'ui/chrome';
+import Notifier from 'ui/notify/notifier';
+
+const notify = new Notifier({ location: 'Scripting Lang Service' });
+
+export function GetScriptingLangsProvider($http) {
+  return () => {
+    return $http.get(chrome.addBasePath('/api/kibana/scripts/languages'))
+    .then((res) => res.data)
+    .catch(() => {
+      notify.error('Error getting available scripting languages from Elasticsearch');
+      return [];
+    });
+  };
+}