diff --git a/app.json b/app.json
index b19407a49..0a9675c8a 100644
--- a/app.json
+++ b/app.json
@@ -26,8 +26,7 @@
       "required": true
     },
     "MONGODB_URL": {
-      "description": "URL of a MongoDB host",
-      "required": true
+      "description": "URL of a MongoDB host (optional)"
     },
     "NPM_CONFIG_PRODUCTION": {
       "descrition": "Skip pruning devDependencies while packages are not public",
diff --git a/indiekit.config.js b/indiekit.config.js
index 7defc6a31..fd41c2570 100644
--- a/indiekit.config.js
+++ b/indiekit.config.js
@@ -22,6 +22,7 @@ indiekit.set('application.locale', process.env.LOCALE);
 // Publication settings
 indiekit.set('publication.me', process.env.PUBLICATION_URL);
 indiekit.set('publication.storeId', 'github');
+indiekit.set('publication.config.categories.url', 'http://paulrobertlloyd.com/categories/index.json');
 
 // Server
 const server = indiekit.server();
diff --git a/packages/endpoint-media/index.js b/packages/endpoint-media/index.js
index 3fb84df01..b51a65619 100644
--- a/packages/endpoint-media/index.js
+++ b/packages/endpoint-media/index.js
@@ -27,10 +27,12 @@ export const MediaEndpoint = class {
   init(indiekitConfig) {
     const {application, publication} = indiekitConfig;
 
-    indiekitConfig.addNavigation({
-      href: `${this.mountpath}/files`,
-      text: 'Files'
-    });
+    if (application.hasDatabase) {
+      indiekitConfig.addNavigation({
+        href: `${this.mountpath}/files`,
+        text: 'Files'
+      });
+    }
 
     indiekitConfig.addRoute({
       mountpath: this.mountpath,
@@ -51,8 +53,11 @@ export const MediaEndpoint = class {
 
     this._router.get('/', queryController(publication));
     this._router.post('/', indieauth(publication), multipartParser.single('file'), uploadController(publication));
-    this._router.get('/files', authenticate, filesController(publication).list);
-    this._router.get('/files/:id', authenticate, filesController(publication).view);
+
+    if (application.hasDatabase) {
+      this._router.get('/files', authenticate, filesController(publication).list);
+      this._router.get('/files/:id', authenticate, filesController(publication).view);
+    }
 
     return router;
   }
diff --git a/packages/endpoint-media/lib/media.js b/packages/endpoint-media/lib/media.js
index b1236be9d..bed245050 100644
--- a/packages/endpoint-media/lib/media.js
+++ b/packages/endpoint-media/lib/media.js
@@ -21,7 +21,11 @@ export const media = {
     if (uploaded) {
       mediaData.date = new Date();
       mediaData.lastAction = 'upload';
-      await media.insertOne(mediaData);
+
+      if (media) {
+        await media.insertOne(mediaData);
+      }
+
       return {
         location: mediaData.properties.url,
         status: 201,
diff --git a/packages/endpoint-micropub/index.js b/packages/endpoint-micropub/index.js
index 92d1ad3a0..25671e6ac 100644
--- a/packages/endpoint-micropub/index.js
+++ b/packages/endpoint-micropub/index.js
@@ -27,10 +27,12 @@ export const MicropubEndpoint = class {
   init(indiekitConfig) {
     const {application, publication} = indiekitConfig;
 
-    indiekitConfig.addNavigation({
-      href: `${this.mountpath}/posts`,
-      text: 'Posts'
-    });
+    if (application.hasDatabase) {
+      indiekitConfig.addNavigation({
+        href: `${this.mountpath}/posts`,
+        text: 'Posts'
+      });
+    }
 
     indiekitConfig.addRoute({
       mountpath: this.mountpath,
@@ -51,8 +53,11 @@ export const MicropubEndpoint = class {
 
     this._router.get('/', queryController(publication));
     this._router.post('/', indieauth(publication), multipartParser.any(), actionController(publication));
-    this._router.get('/posts', authenticate, postsController(publication).list);
-    this._router.get('/posts/:id', authenticate, postsController(publication).view);
+
+    if (application.hasDatabase) {
+      this._router.get('/posts', authenticate, postsController(publication).list);
+      this._router.get('/posts/:id', authenticate, postsController(publication).view);
+    }
 
     return router;
   }
diff --git a/packages/endpoint-micropub/lib/post.js b/packages/endpoint-micropub/lib/post.js
index a100fc328..33d29d789 100644
--- a/packages/endpoint-micropub/lib/post.js
+++ b/packages/endpoint-micropub/lib/post.js
@@ -21,7 +21,10 @@ export const post = {
     if (published) {
       postData.date = new Date();
       postData.lastAction = 'create';
-      await posts.insertOne(postData);
+
+      if (posts) {
+        await posts.insertOne(postData);
+      }
 
       return {
         location: postData.properties.url,
@@ -55,9 +58,12 @@ export const post = {
     if (published) {
       postData.date = new Date();
       postData.lastAction = 'update';
-      await posts.replaceOne({
-        url: postData.properties.url
-      }, postData);
+
+      if (posts) {
+        await posts.replaceOne({
+          url: postData.properties.url
+        }, postData);
+      }
 
       const hasUpdatedUrl = (url !== postData.properties.url);
       return {
@@ -92,9 +98,12 @@ export const post = {
     if (published) {
       postData.date = new Date();
       postData.lastAction = 'delete';
-      await posts.replaceOne({
-        url: postData.properties.url
-      }, postData);
+
+      if (posts) {
+        await posts.replaceOne({
+          url: postData.properties.url
+        }, postData);
+      }
 
       return {
         status: 200,
@@ -131,9 +140,12 @@ export const post = {
     if (published) {
       postData.date = new Date();
       postData.lastAction = 'undelete';
-      await posts.replaceOne({
-        url: postData.properties.url
-      }, postData);
+
+      if (posts) {
+        await posts.replaceOne({
+          url: postData.properties.url
+        }, postData);
+      }
 
       return {
         location: postData.properties.url,
diff --git a/packages/indiekit/config/defaults.js b/packages/indiekit/config/defaults.js
index f5afda8c8..429ae41db 100644
--- a/packages/indiekit/config/defaults.js
+++ b/packages/indiekit/config/defaults.js
@@ -29,6 +29,7 @@ export const defaultConfig = {
     themeColor: '#0000ee',
     repository: package_.repository,
     version: package_.version,
+    hasDatabase: typeof process.env.MONGODB_URL !== 'undefined',
     endpoints: [
       mediaEndpoint,
       micropubEndpoint,
diff --git a/packages/indiekit/config/mongodb.js b/packages/indiekit/config/mongodb.js
index 1e4d1d56b..72c18b658 100644
--- a/packages/indiekit/config/mongodb.js
+++ b/packages/indiekit/config/mongodb.js
@@ -1,11 +1,14 @@
 import mongodb from 'mongodb';
 
 export const mongodbConfig = (async () => {
-  const {MongoClient} = mongodb;
-  const client = new MongoClient(process.env.MONGODB_URL, {
-    useUnifiedTopology: true
-  });
-  await client.connect();
-  const database = client.db('indiekit');
-  return database;
+  const mongodbUrl = process.env.MONGODB_URL;
+  if (mongodbUrl) {
+    const {MongoClient} = mongodb;
+    const client = new MongoClient(mongodbUrl, {
+      useUnifiedTopology: true
+    });
+    await client.connect();
+    const database = client.db('indiekit');
+    return database;
+  }
 })();
diff --git a/packages/indiekit/index.js b/packages/indiekit/index.js
index 78b3feeed..1b8d6de35 100644
--- a/packages/indiekit/index.js
+++ b/packages/indiekit/index.js
@@ -64,16 +64,19 @@ export const Indiekit = class {
   }
 
   async init() {
-    const {locale, presets, stores} = this.application;
+    const {hasDatabase, locale, presets, stores} = this.application;
     const {config, presetId, storeId} = this.publication;
+    const database = await mongodbConfig;
+
+    // Application cache collection
+    this.application.cache = hasDatabase ? await database.collection('cache') : false;
 
     // Publication data collections
-    const database = await mongodbConfig;
-    this.publication.posts = await database.collection('posts');
-    this.publication.media = await database.collection('media');
+    this.publication.posts = hasDatabase ? await database.collection('posts') : false;
+    this.publication.media = hasDatabase ? await database.collection('media') : false;
 
     // Publication configuration
-    const cache = new Cache(mongodbConfig);
+    const cache = new Cache(this.application.cache);
     const preset = getPreset(presets, presetId);
     const categories = await getCategories(cache, config.categories);
     this.publication.preset = preset;
diff --git a/packages/indiekit/lib/cache.js b/packages/indiekit/lib/cache.js
index ef367b0cf..87378f5fb 100644
--- a/packages/indiekit/lib/cache.js
+++ b/packages/indiekit/lib/cache.js
@@ -3,12 +3,10 @@ import got from 'got';
 export const Cache = class {
   /** Fetch data from cache or remote file
    *
-   * @param {object} database Database
-   * @param {string} expires Timeout on key
+   * @param {object} collection Collection
    */
-  constructor(database, expires) {
-    this.database = database;
-    this.expires = expires || 3600;
+  constructor(collection) {
+    this.collection = collection;
   }
 
   /**
@@ -20,9 +18,7 @@ export const Cache = class {
    */
   async json(key, url) {
     try {
-      const database = await this.database;
-      const collection = await database.collection('cache');
-      const cachedData = await collection.findOne({key, url});
+      const cachedData = this.collection ? await this.collection.findOne({key, url}) : false;
       if (cachedData) {
         const {data} = cachedData;
         return {
@@ -34,9 +30,13 @@ export const Cache = class {
       const fetchedData = await got(url, {responseType: 'json'});
       if (fetchedData) {
         const data = fetchedData.body;
-        await collection.replaceOne({}, {key, url, data}, {
-          upsert: true
-        });
+
+        if (this.collection) {
+          await this.collection.replaceOne({}, {key, url, data}, {
+            upsert: true
+          });
+        }
+
         return {
           source: url,
           data
diff --git a/packages/indiekit/tests/lib/cache.js b/packages/indiekit/tests/lib/cache.js
index e644c0156..883119ff5 100644
--- a/packages/indiekit/tests/lib/cache.js
+++ b/packages/indiekit/tests/lib/cache.js
@@ -3,10 +3,12 @@ import nock from 'nock';
 import {mongodbConfig} from '../../config/mongodb.js';
 import {Cache} from '../../lib/cache.js';
 
-const cache = new Cache(mongodbConfig);
+test.beforeEach(async t => {
+  const database = await mongodbConfig;
+  const collection = await database.collection('cache');
 
-test.beforeEach(t => {
   t.context = {
+    cache: new Cache(collection),
     nock: nock('https://website.example').get('/categories.json'),
     url: 'https://website.example/categories.json'
   };
@@ -19,25 +21,23 @@ test.afterEach.always(async () => {
 
 test.serial('Returns data from remote file and saves to cache', async t => {
   const scope = t.context.nock.reply(200, ['Foo', 'Bar']);
-  const result = await cache.json('category', t.context.url);
+  const result = await t.context.cache.json('category', t.context.url);
   t.is(result.source, t.context.url);
   scope.done();
 });
 
 test.serial('Throws error if remote file not found', async t => {
   const scope = t.context.nock.replyWithError('Not found');
-  const error = await t.throwsAsync(cache.json('file', t.context.url));
+  const error = await t.throwsAsync(t.context.cache.json('file', t.context.url));
   t.is(error.message, `Unable to fetch ${t.context.url}: Not found`);
   scope.done();
 });
 
 test.serial('Gets data from cache', async t => {
   const cache = new Cache({
-    collection: () => ({
-      findOne: async () => ({
-        souce: 'cache',
-        date: {}
-      })
+    findOne: async () => ({
+      souce: 'cache',
+      date: {}
     })
   });
 
diff --git a/packages/indiekit/tests/lib/publication.js b/packages/indiekit/tests/lib/publication.js
index b2abc11cf..22b583dcf 100644
--- a/packages/indiekit/tests/lib/publication.js
+++ b/packages/indiekit/tests/lib/publication.js
@@ -13,8 +13,11 @@ import {
 } from '../../lib/publication.js';
 
 test.beforeEach(async t => {
+  const database = await mongodbConfig;
+  const collection = await database.collection('cache');
+
   t.context = await {
-    cache: new Cache(mongodbConfig),
+    cache: new Cache(collection),
     categories: {
       nock: nock('https://website.example').get('/categories.json'),
       url: 'https://website.example/categories.json'