diff --git a/src/ElasticDSL/Aggs/AggBlock.js b/src/ElasticDSL/Aggs/AggBlock.js
new file mode 100644
index 0000000..ad6eb83
--- /dev/null
+++ b/src/ElasticDSL/Aggs/AggBlock.js
@@ -0,0 +1,33 @@
+/* @flow */
+
+import { InputTypeComposer } from 'graphql-compose';
+import { getTypeName, getOrSetType, desc } from '../../utils';
+import { getAggRulesITC } from './AggRules';
+
+export function getAggBlockITC(opts: mixed = {}): InputTypeComposer {
+  const name = getTypeName('AggBlock', opts);
+  const description = desc(`
+    The aggregations framework helps provide aggregated data based on
+    a search query. It is based on simple building blocks called aggregations,
+    that can be composed in order to build complex summaries of the data.
+    [Documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations.html)
+  `);
+
+  return getOrSetType(name, () =>
+    // $FlowFixMe
+    InputTypeComposer.create({
+      name,
+      description,
+      fields: {
+        key: {
+          type: 'String',
+          description: 'FieldName in response for aggregation result',
+        },
+        value: {
+          type: () => getAggRulesITC(opts),
+          description: 'Aggregation rules',
+        },
+      },
+    })
+  );
+}
diff --git a/src/ElasticDSL/Aggs/AggRules.js b/src/ElasticDSL/Aggs/AggRules.js
new file mode 100644
index 0000000..f4a1a58
--- /dev/null
+++ b/src/ElasticDSL/Aggs/AggRules.js
@@ -0,0 +1,38 @@
+/* @flow */
+
+import { InputTypeComposer } from 'graphql-compose';
+import { getTypeName, getOrSetType, desc } from '../../utils';
+import { getAggBlockITC } from './AggBlock';
+
+import { getAvgITC } from './Metrics/Avg';
+import { getCardinalityITC } from './Metrics/Cardinality';
+import { getExtendedStatsITC } from './Metrics/ExtendedStats';
+
+export function getAggRulesITC(opts: mixed = {}): InputTypeComposer {
+  const name = getTypeName('AggRules', opts);
+  const description = desc(
+    `
+    The aggregations framework helps provide aggregated data based on
+    a search query. It is based on simple building blocks called aggregations,
+    that can be composed in order to build complex summaries of the data.
+    [Documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations.html)
+  `
+  );
+
+  return getOrSetType(name, () =>
+    // $FlowFixMe
+    InputTypeComposer.create({
+      name,
+      description,
+      fields: {
+        avg: () => getAvgITC(opts),
+        cardinality: () => getCardinalityITC(opts),
+        extended_stats: () => getExtendedStatsITC(opts),
+
+        aggs: {
+          type: () => [getAggBlockITC(opts)],
+          description: 'Aggregation block',
+        },
+      },
+    }));
+}
diff --git a/src/ElasticDSL/Aggs/Metrics/Avg.js b/src/ElasticDSL/Aggs/Metrics/Avg.js
new file mode 100644
index 0000000..06fd055
--- /dev/null
+++ b/src/ElasticDSL/Aggs/Metrics/Avg.js
@@ -0,0 +1,29 @@
+/* @flow */
+
+import { InputTypeComposer } from 'graphql-compose';
+import { getTypeName, getOrSetType, desc } from '../../../utils';
+import { getCommonsScriptITC } from '../../Commons/Script';
+
+export function getAvgITC(opts: mixed = {}): InputTypeComposer {
+  const name = getTypeName('AggsAvg', opts);
+  const description = desc(`
+    A single-value metrics aggregation that computes the average
+    of numeric values that are extracted from the aggregated documents.
+    These values can be extracted either from specific numeric fields
+    in the documents, or be generated by a provided script.
+    [Documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-avg-aggregation.html)
+  `);
+
+  return getOrSetType(name, () =>
+    // $FlowFixMe
+    InputTypeComposer.create({
+      name,
+      description,
+      fields: {
+        field: 'String',
+        missing: 'Float',
+        script: () => getCommonsScriptITC(),
+      },
+    })
+  );
+}
diff --git a/src/ElasticDSL/Aggs/Metrics/Cardinality.js b/src/ElasticDSL/Aggs/Metrics/Cardinality.js
new file mode 100644
index 0000000..38f2642
--- /dev/null
+++ b/src/ElasticDSL/Aggs/Metrics/Cardinality.js
@@ -0,0 +1,39 @@
+/* @flow */
+
+import { InputTypeComposer } from 'graphql-compose';
+import { getTypeName, getOrSetType, desc } from '../../../utils';
+import { getCommonsScriptITC } from '../../Commons/Script';
+
+export function getCardinalityITC(opts: mixed = {}): InputTypeComposer {
+  const name = getTypeName('AggsCardinality', opts);
+  const description = desc(
+    `
+    A single-value metrics aggregation that calculates an approximate count
+    of distinct values. Values can be extracted either from specific fields
+    in the document or generated by a script.
+    [Documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-cardinality-aggregation.html)
+  `
+  );
+
+  return getOrSetType(name, () =>
+    // $FlowFixMe
+    InputTypeComposer.create({
+      name,
+      description,
+      fields: {
+        field: 'String',
+        precision_threshold: {
+          type: 'Int',
+          defaultValue: 3000,
+          description: desc(
+            `
+            Allows to trade memory for accuracy, and defines a unique count
+            below which counts are expected to be close to accurate.
+          `
+          ),
+        },
+        missing: 'String',
+        script: () => getCommonsScriptITC(),
+      },
+    }));
+}
diff --git a/src/ElasticDSL/Aggs/Metrics/ExtendedStats.js b/src/ElasticDSL/Aggs/Metrics/ExtendedStats.js
new file mode 100644
index 0000000..617ad0f
--- /dev/null
+++ b/src/ElasticDSL/Aggs/Metrics/ExtendedStats.js
@@ -0,0 +1,31 @@
+/* @flow */
+
+import { InputTypeComposer } from 'graphql-compose';
+import { getTypeName, getOrSetType, desc } from '../../../utils';
+import { getCommonsScriptITC } from '../../Commons/Script';
+
+export function getExtendedStatsITC(opts: mixed = {}): InputTypeComposer {
+  const name = getTypeName('AggsExtendedStats', opts);
+  const description = desc(
+    `
+    A multi-value metrics aggregation that computes stats over numeric values
+    extracted from the aggregated documents. These values can be extracted
+    either from specific numeric fields in the documents, or be generated
+    by a provided script.
+    [Documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-extendedstats-aggregation.html)
+  `
+  );
+
+  return getOrSetType(name, () =>
+    // $FlowFixMe
+    InputTypeComposer.create({
+      name,
+      description,
+      fields: {
+        field: 'String',
+        sigma: 'Float',
+        missing: 'Float',
+        script: () => getCommonsScriptITC(),
+      },
+    }));
+}
diff --git a/src/ElasticDSL/Aggs/__tests__/converter-test.js b/src/ElasticDSL/Aggs/__tests__/converter-test.js
new file mode 100644
index 0000000..49e30bb
--- /dev/null
+++ b/src/ElasticDSL/Aggs/__tests__/converter-test.js
@@ -0,0 +1,52 @@
+import argsBlockConverter, {
+  convertAggsBlocks,
+  convertAggsRules,
+} from '../converter';
+
+describe('AGGS args converter', () => {
+  it('convertAggsRules()', () => {
+    expect(convertAggsRules({ some: { field: 1 } })).toEqual({
+      some: { field: 1 },
+    });
+  });
+
+  it('convertAggsBlocks()', () => {
+    expect(
+      convertAggsBlocks([
+        { key: 'field1', value: {} },
+        { key: 'field2', value: {} },
+      ])
+    ).toEqual({
+      field1: {},
+      field2: {},
+    });
+  });
+
+  it('should convert recursively aggs', () => {
+    expect(
+      convertAggsBlocks([
+        { key: 'field1', value: { aggs: [{ key: 'field2', value: {} }] } },
+      ])
+    ).toEqual({ field1: { aggs: { field2: {} } } });
+  });
+
+  it('argsBlockConverter()', () => {
+    expect.assertions(4);
+    const mockResolve = (source, args, context, info) => {
+      expect(args.body.aggs).toEqual({
+        field1: {},
+        field2: {},
+      });
+      expect(source).toEqual('source');
+      expect(context).toEqual('context');
+      expect(info).toEqual('info');
+    };
+
+    const args = {
+      body: {
+        aggs: [{ key: 'field1', value: {} }, { key: 'field2', value: {} }],
+      },
+    };
+    argsBlockConverter(mockResolve)('source', args, 'context', 'info');
+  });
+});
diff --git a/src/ElasticDSL/Aggs/converter.js b/src/ElasticDSL/Aggs/converter.js
new file mode 100644
index 0000000..204cba3
--- /dev/null
+++ b/src/ElasticDSL/Aggs/converter.js
@@ -0,0 +1,55 @@
+import type { GraphQLFieldResolver } from 'graphql/type/definition';
+
+export type ElasticAggsT = {
+  [outputFieldName: string]: ElasticAggsRulesT,
+};
+
+export type ElasticAggsRulesT = {
+  [aggOperationName: string]: mixed,
+  aggs: ElasticAggsT,
+};
+
+export type GqlAggBlock = {
+  key: string,
+  value: GqlAggRules,
+};
+
+export type GqlAggRules = {
+  [aggOperationName: string]: mixed,
+  aggs: GqlAggBlock,
+};
+
+export default function argsBlockConverter(
+  resolve: GraphQLFieldResolver<*, *>
+): GraphQLFieldResolver<*, *> {
+  return (source, args, context, info) => {
+    if (args.body && Array.isArray(args.body.aggs)) {
+      const aggs: GqlAggBlock[] = args.body.aggs;
+      args.body.aggs = convertAggsBlocks(aggs); // eslint-disable-line
+    }
+
+    return resolve(source, args, context, info);
+  };
+}
+
+export function convertAggsBlocks(blockList: GqlAggBlock[]): ElasticAggsT {
+  const result = {};
+  blockList.forEach(block => {
+    if (block.key && block.value) {
+      result[block.key] = convertAggsRules(block.value);
+    }
+  });
+  return result;
+}
+
+export function convertAggsRules(rules: GqlAggRules): ElasticAggsRulesT {
+  const result = {};
+  Object.keys(rules).forEach(key => {
+    if (key === 'aggs' && rules.aggs) {
+      result.aggs = convertAggsBlocks(rules.aggs);
+    } else {
+      result[key] = rules[key];
+    }
+  });
+  return result;
+}
diff --git a/src/ElasticDSL/SearchBody.js b/src/ElasticDSL/SearchBody.js
index df5bc7a..9352d45 100644
--- a/src/ElasticDSL/SearchBody.js
+++ b/src/ElasticDSL/SearchBody.js
@@ -1,16 +1,21 @@
 /* @flow */
 
 import { InputTypeComposer } from 'graphql-compose';
+import type { GraphQLFieldResolver } from 'graphql/type/definition';
 import { getQueryITC } from './Query/Query';
+import { getAggBlockITC } from './Aggs/AggBlock';
+import prepareArgAggs from './Aggs/converter';
 import { getTypeName, getOrSetType, desc } from '../utils';
 
 export function getSearchBodyITC(opts: mixed = {}): InputTypeComposer {
   const name = getTypeName('SearchBody', opts);
-  const description = desc(`
+  const description = desc(
+    `
     The search request can be executed with a search DSL, which includes
     the [Query DSL](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl.html),
     within its body.
-  `);
+  `
+  );
 
   return getOrSetType(name, () =>
     // $FlowFixMe
@@ -19,6 +24,14 @@ export function getSearchBodyITC(opts: mixed = {}): InputTypeComposer {
       description,
       fields: {
         query: () => getQueryITC(opts),
+        aggs: () => [getAggBlockITC(opts)],
+        size: 'Int',
       },
     }));
 }
+
+export function prepareSearchArgs(
+  resolve: GraphQLFieldResolver<*, *>
+): GraphQLFieldResolver<*, *> {
+  return prepareArgAggs(resolve);
+}