diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.scss b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.scss
new file mode 100644
index 0000000000000..4772723f5d927
--- /dev/null
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.scss
@@ -0,0 +1,13 @@
+.appSearchAccordion--bordered {
+  border: $euiBorderThin;
+  border-radius: $euiBorderRadius;
+  padding: $euiSizeM;
+}
+
+.appSearchAccordion--bordered, .appSearchAccordion {
+  .euiBasicTable {
+    .euiTableRow > .euiTableRowCell {
+      border-bottom: none;
+    }
+  }
+}
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.test.tsx b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.test.tsx
new file mode 100644
index 0000000000000..2219a50a5e7f3
--- /dev/null
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.test.tsx
@@ -0,0 +1,59 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import '../../../../__mocks__/engine_logic.mock';
+
+import React from 'react';
+
+import { shallow, ShallowWrapper } from 'enzyme';
+
+import { EuiAccordion, EuiIcon, EuiTitle, EuiInMemoryTable } from '@elastic/eui';
+
+import { AccordionList } from './accordion_list';
+
+const MOCK_PROPS = {
+  title: 'Test Items',
+  iconType: 'globe',
+  items: ['first item', 'second item'],
+};
+
+describe('AccordionList', () => {
+  let wrapper: ShallowWrapper;
+
+  beforeAll(() => {
+    wrapper = shallow(<AccordionList {...MOCK_PROPS} />);
+  });
+
+  it('renders as an accordion with the passed in title and icon', () => {
+    expect(wrapper.is(EuiAccordion)).toBe(true);
+
+    const buttonContent = shallow(wrapper.prop('buttonContent'));
+
+    expect(buttonContent.find(EuiIcon).prop('type')).toEqual('globe');
+    expect(buttonContent.find(EuiTitle).children().text()).toEqual('Test Items');
+  });
+
+  it('shows the item count', () => {
+    const extraActionContent = shallow(wrapper.prop('extraAction'));
+
+    expect(extraActionContent.text()).toEqual('2');
+  });
+
+  it('contains an table displaying the items', () => {
+    const table = wrapper.find(EuiInMemoryTable);
+
+    expect(table.prop('items')).toEqual([{ item: 'first item' }, { item: 'second item' }]);
+
+    expect(table.prop('columns')[0].render({ item: 'first item' })).toEqual('first item');
+  });
+
+  it('is disabled when there are no items', () => {
+    const disabledWrapper = shallow(<AccordionList {...{ ...MOCK_PROPS, items: [] }} />);
+
+    expect(disabledWrapper.prop('arrowProps').isDisabled).toEqual(true);
+  });
+});
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.tsx b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.tsx
new file mode 100644
index 0000000000000..ba537f712cf27
--- /dev/null
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/accordion_list.tsx
@@ -0,0 +1,92 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React from 'react';
+
+import {
+  EuiAccordion,
+  EuiFlexGroup,
+  EuiFlexItem,
+  EuiIcon,
+  EuiInMemoryTable,
+  EuiNotificationBadge,
+  EuiSpacer,
+  EuiTitle,
+  IconType,
+  useGeneratedHtmlId,
+} from '@elastic/eui';
+
+import './accordion_list.scss';
+
+interface Props {
+  hasBorder?: boolean;
+  iconType: IconType;
+  initialIsOpen?: boolean;
+  items: string[];
+  rowCount?: number;
+  title: string;
+}
+
+export const AccordionList: React.FC<Props> = ({
+  hasBorder,
+  iconType,
+  initialIsOpen,
+  items,
+  rowCount = 10,
+  title,
+}) => {
+  const accordionId = useGeneratedHtmlId({
+    prefix: 'accordionList',
+  });
+
+  const showPagination = items.length > rowCount;
+
+  return (
+    <EuiAccordion
+      initialIsOpen={initialIsOpen}
+      arrowProps={{
+        isDisabled: items.length === 0,
+      }}
+      className={hasBorder ? 'appSearchAccordion--bordered' : 'appSearchAccordion'}
+      buttonContent={
+        <EuiFlexGroup direction="row" responsive={false} gutterSize="s" alignItems="center">
+          <EuiFlexItem grow={false}>
+            <EuiIcon type={iconType} />
+          </EuiFlexItem>
+          <EuiFlexItem>
+            <EuiTitle size="s">
+              <h3>{title}</h3>
+            </EuiTitle>
+          </EuiFlexItem>
+        </EuiFlexGroup>
+      }
+      id={accordionId}
+      extraAction={
+        <EuiNotificationBadge color={items.length > 0 ? 'accent' : 'subdued'} size="m">
+          {items.length}
+        </EuiNotificationBadge>
+      }
+    >
+      <EuiInMemoryTable
+        items={items.map((item) => ({ item }))}
+        columns={[
+          {
+            render: ({ item }: { item: string }) => item,
+          },
+        ]}
+        pagination={
+          showPagination
+            ? {
+                hidePerPageOptions: true,
+              }
+            : false
+        }
+      />
+      {!showPagination && <EuiSpacer size="s" />}
+    </EuiAccordion>
+  );
+};
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_flyout.tsx b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_flyout.tsx
index 8ecd861304458..9c3c1da534f72 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_flyout.tsx
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_flyout.tsx
@@ -35,7 +35,12 @@ export const CrawlDetailsFlyout: React.FC = () => {
   }
 
   return (
-    <EuiFlyout ownFocus onClose={closeFlyout} aria-labelledby="CrawlDetailsFlyoutTitle">
+    <EuiFlyout
+      maxWidth="45rem"
+      ownFocus
+      onClose={closeFlyout}
+      aria-labelledby="CrawlDetailsFlyoutTitle"
+    >
       <EuiFlyoutHeader hasBorder>
         <EuiTitle size="m">
           <h2 id="CrawlDetailsFlyoutTitle">
@@ -70,7 +75,7 @@ export const CrawlDetailsFlyout: React.FC = () => {
           <>
             {selectedTab === 'preview' && <CrawlDetailsPreview />}
             {selectedTab === 'json' && (
-              <EuiCodeBlock language="json">
+              <EuiCodeBlock language="json" isCopyable>
                 {JSON.stringify(crawlRequestFromServer, null, 2)}
               </EuiCodeBlock>
             )}
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_preview.test.tsx b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_preview.test.tsx
index d7c69e5445167..646c611901c7f 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_preview.test.tsx
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_preview.test.tsx
@@ -4,17 +4,77 @@
  * 2.0; you may not use this file except in compliance with the Elastic License
  * 2.0.
  */
+import { setMockValues } from '../../../../../__mocks__/kea_logic';
 
 import React from 'react';
 
-import { shallow } from 'enzyme';
+import { shallow, ShallowWrapper } from 'enzyme';
 
+import { CrawlDetailValues } from '../../crawl_detail_logic';
+import { CrawlerStatus, CrawlType } from '../../types';
+
+import { AccordionList } from './accordion_list';
 import { CrawlDetailsPreview } from './crawl_details_preview';
 
+const MOCK_VALUES: Partial<CrawlDetailValues> = {
+  crawlRequest: {
+    id: '507f1f77bcf86cd799439011',
+    status: CrawlerStatus.Pending,
+    createdAt: 'Mon, 31 Aug 2020 17:00:00 +0000',
+    beganAt: null,
+    completedAt: null,
+    type: CrawlType.Full,
+    crawlConfig: {
+      domainAllowlist: ['https://www.elastic.co', 'https://www.swiftype.com'],
+      seedUrls: ['https://www.elastic.co/docs', 'https://www.swiftype.com/documentation'],
+      sitemapUrls: ['https://www.elastic.co/sitemap.xml', 'https://www.swiftype.com/sitemap.xml'],
+    },
+  },
+};
+
 describe('CrawlDetailsPreview', () => {
-  it('is empty', () => {
-    const wrapper = shallow(<CrawlDetailsPreview />);
+  it('is empty when a crawl request has not been loaded', () => {
+    setMockValues({
+      crawlRequest: null,
+    });
 
+    const wrapper = shallow(<CrawlDetailsPreview />);
     expect(wrapper.isEmptyRender()).toBe(true);
   });
+
+  describe('when a crawl request has been loaded', () => {
+    let wrapper: ShallowWrapper;
+
+    beforeAll(() => {
+      setMockValues(MOCK_VALUES);
+      wrapper = shallow(<CrawlDetailsPreview />);
+    });
+
+    it('contains a list of domains', () => {
+      const domainList = wrapper.find(AccordionList).at(0);
+
+      expect(domainList.prop('items')).toEqual([
+        'https://www.elastic.co',
+        'https://www.swiftype.com',
+      ]);
+    });
+
+    it('contains a list of seed urls', () => {
+      const seedUrlList = wrapper.find(AccordionList).at(1);
+
+      expect(seedUrlList.prop('items')).toEqual([
+        'https://www.elastic.co/docs',
+        'https://www.swiftype.com/documentation',
+      ]);
+    });
+
+    it('contains a list of sitemap urls', () => {
+      const sitemapUrlList = wrapper.find(AccordionList).at(2);
+
+      expect(sitemapUrlList.prop('items')).toEqual([
+        'https://www.elastic.co/sitemap.xml',
+        'https://www.swiftype.com/sitemap.xml',
+      ]);
+    });
+  });
 });
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_preview.tsx b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_preview.tsx
index 7fa95d920c17b..6f837d1db26e2 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_preview.tsx
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_details_flyout/crawl_details_preview.tsx
@@ -7,4 +7,62 @@
 
 import React from 'react';
 
-export const CrawlDetailsPreview: React.FC = () => null;
+import { useValues } from 'kea';
+
+import { EuiSpacer } from '@elastic/eui';
+import { i18n } from '@kbn/i18n';
+
+import { CrawlDetailLogic } from '../../crawl_detail_logic';
+
+import { AccordionList } from './accordion_list';
+
+export const CrawlDetailsPreview: React.FC = () => {
+  const { crawlRequest } = useValues(CrawlDetailLogic);
+
+  if (crawlRequest === null) {
+    return null;
+  }
+
+  return (
+    <>
+      <AccordionList
+        hasBorder
+        initialIsOpen={crawlRequest.crawlConfig.domainAllowlist.length > 0}
+        title={i18n.translate(
+          'xpack.enterpriseSearch.appSearch.crawler.crawlDetailsPreview.domainsTitle',
+          {
+            defaultMessage: 'Domains',
+          }
+        )}
+        iconType="globe"
+        items={crawlRequest.crawlConfig.domainAllowlist}
+      />
+      <EuiSpacer size="s" />
+      <AccordionList
+        hasBorder
+        initialIsOpen={crawlRequest.crawlConfig.seedUrls.length > 0}
+        title={i18n.translate(
+          'xpack.enterpriseSearch.appSearch.crawler.crawlDetailsPreview.seedUrlsTitle',
+          {
+            defaultMessage: 'Seed URLs',
+          }
+        )}
+        iconType="crosshairs"
+        items={crawlRequest.crawlConfig.seedUrls}
+      />
+      <EuiSpacer size="s" />
+      <AccordionList
+        hasBorder
+        initialIsOpen={crawlRequest.crawlConfig.sitemapUrls.length > 0}
+        title={i18n.translate(
+          'xpack.enterpriseSearch.appSearch.crawler.crawlDetailsPreview.sitemapUrlsTitle',
+          {
+            defaultMessage: 'Sitemap URLs',
+          }
+        )}
+        iconType="visMapRegion"
+        items={crawlRequest.crawlConfig.sitemapUrls}
+      />
+    </>
+  );
+};
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_event_type_badge.test.tsx b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_event_type_badge.test.tsx
index b0ff75e73e86c..fd1f03c586f12 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_event_type_badge.test.tsx
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_event_type_badge.test.tsx
@@ -29,6 +29,8 @@ const MOCK_EVENT: CrawlEvent = {
   type: CrawlType.Full,
   crawlConfig: {
     domainAllowlist: ['https://www.elastic.co'],
+    seedUrls: [],
+    sitemapUrls: [],
   },
 };
 
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_requests_table.test.tsx b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_requests_table.test.tsx
index bc5f8bf87e100..e11661e4a942e 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_requests_table.test.tsx
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/components/crawl_requests_table.test.tsx
@@ -33,6 +33,8 @@ const values: { events: CrawlEvent[] } = {
       type: CrawlType.Full,
       crawlConfig: {
         domainAllowlist: ['https://www.elastic.co'],
+        seedUrls: [],
+        sitemapUrls: [],
       },
     },
     {
@@ -45,6 +47,8 @@ const values: { events: CrawlEvent[] } = {
       type: CrawlType.Full,
       crawlConfig: {
         domainAllowlist: ['https://www.elastic.co'],
+        seedUrls: [],
+        sitemapUrls: [],
       },
     },
   ],
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawl_detail_logic.test.ts b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawl_detail_logic.test.ts
index 57816db01b58c..a7d795c93e0a7 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawl_detail_logic.test.ts
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawl_detail_logic.test.ts
@@ -33,6 +33,8 @@ const crawlRequestResponse: CrawlRequestWithDetailsFromServer = {
   type: CrawlType.Full,
   crawl_config: {
     domain_allowlist: [],
+    seed_urls: [],
+    sitemap_urls: [],
   },
 };
 
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawler_logic.test.ts b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawler_logic.test.ts
index f1e8dc6a6efa4..5af9b1652c889 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawler_logic.test.ts
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawler_logic.test.ts
@@ -136,6 +136,8 @@ describe('CrawlerLogic', () => {
             type: CrawlType.Full,
             crawlConfig: {
               domainAllowlist: ['elastic.co'],
+              seedUrls: [],
+              sitemapUrls: [],
             },
           },
         ],
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawler_overview.test.tsx b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawler_overview.test.tsx
index 7c5510519d202..0d2c2e60abfa9 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawler_overview.test.tsx
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/crawler_overview.test.tsx
@@ -78,6 +78,8 @@ const events: CrawlEventFromServer[] = [
     type: CrawlType.Full,
     crawl_config: {
       domain_allowlist: ['moviedatabase.com', 'swiftype.com'],
+      seed_urls: [],
+      sitemap_urls: [],
     },
   },
   {
@@ -90,6 +92,8 @@ const events: CrawlEventFromServer[] = [
     type: CrawlType.Partial,
     crawl_config: {
       domain_allowlist: ['swiftype.com'],
+      seed_urls: [],
+      sitemap_urls: [],
     },
   },
 ];
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/types.ts b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/types.ts
index 6cdccfdc78633..85ebb0032971d 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/types.ts
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/types.ts
@@ -201,10 +201,14 @@ export interface CrawlRequest {
 
 export interface CrawlConfig {
   domainAllowlist: string[];
+  seedUrls: string[];
+  sitemapUrls: string[];
 }
 
 export interface CrawlConfigFromServer {
   domain_allowlist: string[];
+  seed_urls: string[];
+  sitemap_urls: string[];
 }
 
 export type CrawlRequestWithDetailsFromServer = CrawlRequestFromServer & {
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/utils.test.ts b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/utils.test.ts
index c104312f19edc..0df1f57eaefa0 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/utils.test.ts
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/utils.test.ts
@@ -139,6 +139,8 @@ describe('crawlRequestWithDetailsServerToClient', () => {
       type: CrawlType.Full,
       crawl_config: {
         domain_allowlist: [],
+        seed_urls: [],
+        sitemap_urls: [],
       },
     };
 
@@ -151,6 +153,8 @@ describe('crawlRequestWithDetailsServerToClient', () => {
       type: CrawlType.Full,
       crawlConfig: {
         domainAllowlist: [],
+        seedUrls: [],
+        sitemapUrls: [],
       },
     };
 
@@ -185,6 +189,8 @@ describe('crawlEventServerToClient', () => {
       type: CrawlType.Full,
       crawl_config: {
         domain_allowlist: [],
+        seed_urls: [],
+        sitemap_urls: [],
       },
       stage: 'crawl',
     };
@@ -198,6 +204,8 @@ describe('crawlEventServerToClient', () => {
       type: CrawlType.Full,
       crawlConfig: {
         domainAllowlist: [],
+        seedUrls: [],
+        sitemapUrls: [],
       },
       stage: 'crawl',
     };
@@ -264,6 +272,8 @@ describe('crawlerDataServerToClient', () => {
           type: CrawlType.Full,
           crawl_config: {
             domain_allowlist: ['https://www.elastic.co'],
+            seed_urls: [],
+            sitemap_urls: [],
           },
         },
       ],
@@ -317,6 +327,8 @@ describe('crawlerDataServerToClient', () => {
         type: 'full',
         crawlConfig: {
           domainAllowlist: ['https://www.elastic.co'],
+          seedUrls: [],
+          sitemapUrls: [],
         },
       },
     ]);
diff --git a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/utils.ts b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/utils.ts
index 16e3dad5f46e9..d1203e19c0208 100644
--- a/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/utils.ts
+++ b/x-pack/plugins/enterprise_search/public/applications/app_search/components/crawler/utils.ts
@@ -85,10 +85,16 @@ export function crawlRequestServerToClient(crawlRequest: CrawlRequestFromServer)
 }
 
 export function crawlConfigServerToClient(crawlConfig: CrawlConfigFromServer): CrawlConfig {
-  const { domain_allowlist: domainAllowlist } = crawlConfig;
+  const {
+    domain_allowlist: domainAllowlist,
+    seed_urls: seedUrls,
+    sitemap_urls: sitemapUrls,
+  } = crawlConfig;
 
   return {
     domainAllowlist,
+    seedUrls,
+    sitemapUrls,
   };
 }