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A delightful Swift interface to Contentful's content delivery API.

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contentful.swift - Swift Delivery SDK for Contentful

Swift SDK for the Contentful Content Delivery API and Content Preview API. It helps you to easily access your Content stored in Contentful with your Swift applications.

This repository is actively maintained   MIT License   Build Status   Coverage Status   Codebeat badge

Version   Carthage compatible   Swift Package Manager compatible   iOS | macOS | watchOS | tvOS  

What is Contentful?

Contentful provides content infrastructure for digital teams to power websites, apps, and devices. Unlike a CMS, Contentful was built to integrate with the modern software stack. It offers a central hub for structured content, powerful management and delivery APIs, and a customizable web app that enable developers and content creators to ship their products faster.

Table of contents

Core Features

In order to get started with the Contentful Swift SDK you'll need not only to install it, but also to get credentials which will allow you to have access to your content in Contentful.


CocoaPods installation
platform :ios, '9.0'
pod 'Contentful'

You can specify a specific version of Contentful depending on your needs. To learn more about operators for dependency versioning within a Podfile, see the CocoaPods doc on the Podfile.

pod 'Contentful', '~> 5.0.0'

Carthage installation

You can also use Carthage for integration by adding the following to your

github "contentful/contentful.swift" ~> 5.0.0

Swift Package Manager [swift-tools-version 5.0]

Add the following line to your array of dependencies:

.package(url: "", .upToNextMajor(from: "5.0.0"))

Your first request

The following code snippet is the most basic one you can use to fetch content from Contentful with this SDK:

import Contentful

let client = Client(spaceId: "cfexampleapi", environmentId: "master", // Defaults to "master" if omitted. accessToken: "b4c0n73n7fu1")

client.fetch(Entry.self, id: "nyancat") { (result: Result) in switch result { case .success(let entry): print(entry) case .error(let error): print("Error (error)!") } }

Accessing the Preview API

To access the Content Preview API, use your preview access token and set your client configuration to use preview as shown below.

let client = Client(spaceId: "cfexampleapi",
                    accessToken: "e5e8d4c5c122cf28fc1af3ff77d28bef78a3952957f15067bbc29f2f0dde0b50",
                    host: Host.preview) // Defaults to if omitted.


Grab credentials for your Contentful space by navigating to the "APIs" section of the Contentful Web App. If you don't have access tokens for your app, create a new set for the Delivery and Preview APIs. Next, pass the id of your space and delivery access token into the initializer like so:

Map Contentful entries to Swift classes via


protocol allows you to define a mapping between your content types and your Swift classes that entries will be serialized to. When using methods such as:
let query = QueryOn.where(field: .color, .equals("gray"))

client.fetchArray(of: Cat.self, matching: query) { (result: Result>) in guard let cats = result.value?.items else { return } print(cats) }

The asynchronously returned result will be an instance of

in which the generic type parameter is the same type you've passed into the
method. If you are using a
that does not restrict the response to contain entries of one content type, you will use methods that return
instead of
. The
protocol extends the
protocol in Swift 4's Foundation standard library. The SDK provides helper methods for resolving relationships between
s and also for grabbing values from the fields container in the JSON for each resource.

In the example above,

is a type of our own definition conforming to
. In order for the SDK to properly create your model types when receiving JSON, you must pass in these types to your
let contentTypeClasses: [EntryDecodable.Type] = [

let client = Client(spaceId: spaceId, accessToken: deliveryAPIAccessToken, contentTypeClasses: contentTypeClasses)

The source for the

model class is below; note the helper methods the SDK adds to Swift 4's
type to simplify for parsing JSON returned by Contentful. You also need to pass in these types to your
instance in order to use the fetch methods which take
type references:
final class Cat: EntryDecodable, FieldKeysQueryable {

static let contentTypeId: String = "cat"

// FlatResource members.
let id: String
let localeCode: String?
let updatedAt: Date?
let createdAt: Date?

let color: String?
let name: String?
let lives: Int?
let likes: [String]?

// Relationship fields.
var bestFriend: Cat?

public required init(from decoder: Decoder) throws {
    let sys         = try decoder.sys()
    id              =
    localeCode      = sys.locale
    updatedAt       = sys.updatedAt
    createdAt       = sys.createdAt

    let fields      = try decoder.contentfulFieldsContainer(keyedBy: Cat.FieldKeys.self)       = try fields.decodeIfPresent(String.self, forKey: .name)
    self.color      = try fields.decodeIfPresent(String.self, forKey: .color)
    self.likes      = try fields.decodeIfPresent(Array<string>.self, forKey: .likes)
    self.lives      = try fields.decodeIfPresent(Int.self, forKey: .lives)

    try fields.resolveLink(forKey: .bestFriend, decoder: decoder) { [weak self] linkedCat in
        self?.bestFriend = linkedCat as? Cat

enum FieldKeys: String, CodingKey {
    case bestFriend
    case name, color, likes, lives


If you want to simplify the implementation of an

, declare conformance to
and add
let sys: Sys
property to the class and assign via
sys = try decoder.sys()
during initialization. Then,
, and
are all provided via the
property and don't need to be declared as class members. However, note that this style of implementation may make integration with local database frameworks like Realm and CoreData more cumbersome.

Additionally, the SDK requires that instances of a type representing an entry or asset must be a

instance, not a
—this is because the SDK ensures that the in-memory object graph is complete, but also that it has no duplicates.

Documentation & References

Reference Documentation

The SDK has 100% documentation coverage of all public variables, types, and functions. You can view the docs on the web or browse them in Xcode. For further information about the Content Delivery API, check out the Content Delivery API Reference Documentation.

Tutorials & other resources

  • This library is a wrapper around our Contentful Delivery REST API. Some more specific details such as search parameters and pagination are better explained on the REST API reference, and you can also get a better understanding of how the requests look under the hood.
  • Check the Contentful for Swift page for Tutorials, Demo Apps, and more information on other ways of using Swift with Contentful

Swift playground

If you'd like to try an interactive demo of the API via a Swift Playground, do the following:

git clone --recursive
cd contentful.swift
make open

Then build the "Contentful_macOS" scheme, open the playground file and go! Note: make sure the "Render Documentation" button is switched on in the Utilities menu on the right of Xcode, and also open up the console to see the outputs of the calls to


Example application

See the Swift iOS app on Github and follow the instructions on the README to get a copy of the space so you can see how changing content in Contentful affects the presentation of the app.


We gathered all information related to migrating from older versions of the library in our document.

Swift Versioning

It is recommended to use Swift 5.0, as older versions of the SDK will not have fixes backported. If you must use older Swift versions, see the compatible tags below.

Swift version | Compatible Contentful tag | | --- | --- | | Swift 5.0 | [ ≥

] | | Swift 4.2 | [ ≥
] | | Swift 4.1 | [
] | | Swift 4.0 | [
] | | Swift 3.x | [
] | | Swift 2.3 |
| | Swift 2.2 |

Reach out to us

Have questions about how to use this library?

  • Reach out to our community forum: Contentful Community Forum
  • Jump into our community slack channel: Contentful Community Slack

You found a bug or want to propose a feature?

  • File an issue here on GitHub: File an issue. Make sure to remove any credential from your code before sharing it.

You need to share confidential information or have other questions?

  • File a support ticket at our Contentful Customer Support: File support ticket

Get involved

PRs Welcome

We appreciate any help on our repositories. For more details about how to contribute see our document.


This repository is published under the MIT license.

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Read our full Code of Conduct.

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