> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/feature-flags/use-feature-flags.md).

# Use Feature Flags

- [Use FF](https://developer.harness.io/feature-flags/use-feature-flags/use-ff.md): Explore how to use Harness Feature Flags.
- [Use Webhook for Feature Flag Implementation with Harness](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/webhook-for-ff.md): Using Webhook for Feature Flag Implementation with Harness
- [Use Pipelines with FF](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-build-pipeline.md): Explore pipelines for Harness Feature Flags.
- [Build a Feature Flag Pipeline](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-build-pipeline/build-feature-flag-pipeline.md): This topic explains how to build a Feature Flag pipeline.
- [Add a Default Pipeline for Flag Changes](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-build-pipeline/default-pipeline-ff.md): This feature is available to use only by Project Admins. You can add a Pipeline to your Flags that will be applied when you or your team make the following changes --  Enable or disable a Flag. Add Ta
- [Create, Update, & View Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag.md): Explore how to create, update, and view feature flags.
- [Complete the Prerequisites](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/create-a-project.md): Before you can create a Feature Flag, you need to create a Project in the Harness platform. A Feature Flag is available only for the Project the Flag is created in, so you need to create any Flags in…
- [Create a Feature Flag](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/create-a-feature-flag.md): This topic describes how to create a feature flag in Harness.
- [Edit or Delete Feature Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/edit-and-delete-a-feature-flag.md): After you have created a flag, you can edit or delete it.
- [Enable or Disable Your Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/enable-or-disable-a-feature-flag.md): This topic describes how to turn on or off a flag in a specific environment.
- [View & Filter Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/filtering-flags-by-state.md): To help manage your Feature Flags, you can use the filter tiles on the Harness Platform to filter your Flags based on states
- [Manage Rules for Your Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/editing-rules-and-config.md): This page discusses using Harness Feature Flags with Cloud Cost Module and how it's used.
- [Manage Stale Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/manage-stale-flags.md): Identify and automatically open pull requests to remove stale feature flags from your code.
- [Change the Variations of Your Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/manage-variations.md): This topic describes how to edit the default variations of your feature flag.
- [Manage Tags for Feature Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/tag-management.md): This topic focuses on tagging and its uses within Feature Flags.
- [Use Cloud Cost Management with Your Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/using-ff-ccm.md): This page discusses using Harness Feature Flags with Cloud Cost Module and how it's used.
- [Add a Prerequisite to a Flag](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/add-prerequisites-to-feature-flag.md): This topic describes how to use feature flag prerequisites to enable or disable features based on different flag states.
- [Manage Flags Using Git Experience](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/manage-featureflags-in-git-repos.md): Using Harness Git Experience with Feature Flags allows you to manage your Flags from a .yaml file in your Git repository.
- [Integrate Flags with Jira](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-creating-flag/integrate-feature-flag-with-jira.md): View Jira issues for a specific Harness feature flag.
- [Get Data on Your Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-data.md): Explore activity and analytics data for feature flags.
- [Use the FF Dashboard](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-data/dashboard.md): This topic describes how to use, copy, and edit the Feature Flags dashboard.
- [View the Activities of a Flag](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-data/view-activities-of-a-feature-flag.md): This topic describes how to view the activity of a selected feature flag.
- [View the Analytics for a Flag](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-data/view-metrics.md): This topic describes how to view the metrics of a feature flag.
- [Track Anonymous Users & Monthly Active Users](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-data/anonymous-users-maus.md): This topic defines anonymous users, how their data is handled in Harness Feature Flags, and how they relate to the Monthly Active Users (MAUs) count.
- [Use FF SDKs](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks.md): Explore Harness Feature Flags software development kits (SDKs).
- [Get Started with an SDK](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/java-quickstart.md): This quickstart shows you how to create a Feature Flag in Harness and use Feature Flags (FF) SDK in your Java application.
- [SDKs Overview](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/sdk-overview.md): Learn how Harness Feature Flags SDKs work.
- [Choose a Client-Side or Server-Side SDK](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/sdk-overview/client-side-and-server-side-sdks.md): This topic will help you understand the difference between Harness Feature Flag's client-side and server-side SDKs.
- [How SDKs Communicate with the Feature Flags Client](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/sdk-overview/communication-sdks-harness-feature-flags.md): This topic describes how the SDKs communicate with Harness Feature Flags to receive flag changes.
- [CDN Support for Server-Side SDKs](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/sdk-overview/cdn-support.md): This topic describes how the SDKs communicate with Harness Feature Flags to receive flag changes.
- [SDK Versioning](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/sdk-overview/sdk-version-policy.md): This topic describes the versioning policy for SDKs.
- [Client SDK Guides](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/client-sdks.md): Explore client-side Harness Feature Flags SDK guides.
- [Android SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/client-sdks/android-sdk-reference.md): This topic explains how to use the Harness Feature Flags SDK in your Android application.
- [Flutter SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/client-sdks/flutter-sdk-reference.md): This topic explains how to use the Feature Flags (FF) SDK in your Flutter application.
- [iOS SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/client-sdks/ios-sdk-reference.md): This topic explains how to use the Continuous Features (CF) SDK in your iOS application.
- [React Native SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/client-sdks/react-native-sdk-reference.md): This topic explains how to use the Harness Feature Flags SDK in your React Native application.
- [Xamarin SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/client-sdks/xamarin-sdk-reference.md): This topic explains how to use the Harness Feature Flags SDK in your Xamarin application.
- [React Client SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/client-sdks/react-client.md): This topic explains how to use the Harness Feature Flags SDK in your React Client application.
- [JavaScript SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/client-sdks/java-script-sdk-references.md): This topic explains how to use the Harness Feature Flags SDK in your JavaScript application.
- [Server SDK Guides](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks.md): Explore server-side Harness Feature Flags SDK guides.
- [Apex SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/apex-sdk-reference.md): This topic describes how to use the Harness Feature Flags Apex SDK for your Apex application. For getting started quickly, you can use our sample code from the Apex SDK README. You can also clone and…
- [Erlang SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/erlang-sdk-reference.md): This topic describes how to use the Harness Feature Flags Erlang SDK. For getting started quickly, you can use our sample code from the Erlang SDK README.
- [Go SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/feature-flag-sdks-go-application.md): This topic explains how to integrate your feature flags with Go SDK.
- [Java SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/integrate-feature-flag-with-java-sdk.md): This topic explains how to integrate your feature flags with Java SDK.
- [.NET SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/net-sdk-reference.md): This topic explains how to use the Harness Feature Flags (FF) SDK in your .NET application.
- [Node.js SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/node-js-sdk-reference.md): This topic describes how to use the Harness Feature Flags Node.js SDK for your Node.js application. For getting started quickly, you can use our sample code from the Node.js SDK README. You can also c
- [PHP SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/php-sdk-reference.md): This topic describes how to use the Harness Feature Flags PHP SDK for your PHP application. For getting started quickly, you can use our sample code from the PHP SDK README. You can also clone and ru…
- [Python SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/python-sdk-reference.md): This topic explains how to use the Harness Feature Flags SDK in your Python application.
- [Ruby SDK Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-sdks/server-sdks/ruby-sdk-reference.md): This topic explains how to use the Harness Feature Flags (FF) SDK in your Ruby application.
- [Manage Target Users & Groups](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-target-management.md): Explore how to manage targets and target groups.
- [Add Targets](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-target-management/add-targets.md): This topic describes how to add targets to your environment.
- [Add & Manage Target Groups](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-target-management/add-target-groups.md): This topic describes how to add a Target Group to your Environment, add Targets to the group, and apply the Target Group to a Feature Flag.
- [Target Users with Flags](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/ff-target-management/targeting-users-with-flags.md): This topic describes how to use targeting rules to control variations that you want to serve to your users.
- [Use the Relay Proxy with FF](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy.md): Explore how to use the Relay proxy with Harness Feature Flags.
- [Relay Proxy V2 Overview](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/relay-proxy-v2.md): This topic focuses on version 2 of the Relay Proxy, how to use it and common FAQs on how it's used with Harness Feature Flags (FF).
- [Relay Proxy V1 Overview](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/relay-proxy.md): This topic describes what is Relay Proxy and how to use it with Harness Feature Flags (FF).
- [Deploy the Relay Proxy](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/deploy-relay-proxy.md): This topic describes how to deploy and start the Relay Proxy.
- [Configuration Reference](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/configuration.md): This topic describes how to configure the Relay Proxy.
- [Enable TLS](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/tls.md): This topic contains information on how to enable TLS in the Proxy
- [Caching Options](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/cache-options.md): This topic provides an overview of how the Proxy's in memory cache functions
- [Inbound Endpoints](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/inbound-endpoints.md): This topic provides an overview of the endpoints SDKs use when connecting to the Proxy.
- [Outbound Endpoints](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/outbound-endpoints.md): This topic provides an overview of the endpoints the Proxy uses when it connects to SAAS Feature Flags
- [Debugging](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/debugging.md): This topic contains information on how to debug common issues with the Proxy
- [Load Balancing](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/load-balancing.md): This topic contains information on how to use multiple proxies with a load balancer
- [Monitor the Proxy Using Prometheus](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/monitoring.md): This topic contains information on how to use Prometheus metrics
- [Use Offline Mode](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/offline.md): This topic contains information on how to configure the proxy to run in offline mode
- [Sample cURL Requests](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/relay-proxy/sample-curl-requests.md): This topic contains some example curl requests that can be useful for debugging
- [Connect Flags to Monitored Services](https://developer.harness.io/feature-flags/use-feature-flags/use-ff/connect-monitored-service.md): This topic describes how to connect flags to monitored services to see the impact of flag states on service health.
- [Secure FF](https://developer.harness.io/feature-flags/use-feature-flags/secure-ff.md)
- [Security & Compliance](https://developer.harness.io/feature-flags/use-feature-flags/secure-ff/ff-security-compliance.md): Explore security and compliance resources for Harness Feature Flags.
- [Comply with GDPR](https://developer.harness.io/feature-flags/use-feature-flags/secure-ff/ff-security-compliance/gdpr-compliance.md): Harness Feature Flags are General Data Protection Regulation (GDPR) compliant. To ensure this --  Harness doesn't provide a European data residency option, but it does provide teams easy abstractions
- [Roles & Permissions](https://developer.harness.io/feature-flags/use-feature-flags/secure-ff/ff-security-compliance/roles-and-permissions.md): This topic explains the roles and permissions within Harness Feature Flags.
- [RBAC at FF](https://developer.harness.io/feature-flags/use-feature-flags/secure-ff/rbac-at-ff.md): Manage role-based access control (RBAC) for Harness Feature Flags.
- [Manage Access Control](https://developer.harness.io/feature-flags/use-feature-flags/secure-ff/rbac-at-ff/manage-access-control.md): This topic describes how to add and manage access control for Feature Flags.
- [Subscriptions in FF](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff.md): Manage subscriptions for Harness Feature Flags.
- [Subscriptions Overview](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/subscriptions-overview.md): Harness subscriptions allow you to tailor the level of cover you need from each Harness module you use. For Feature Flags, you can subscribe and upgrade online directly through the Harness Platform i…
- [Create a New Subscription](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/create-a-new-subscription.md): This topic describes how to subscribe to Feature Flags through the Harness Platform.
- [Available Plans for Feature Flags](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/available-plans-for-feature-flags.md): With Feature Flags, there are three tiers of subscription plans you can choose from --  Free plan. Team plan. Enterprise plan. Below is an overview of the features of each plan. For a full list of all
- [View Your Current Subscriptions](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/view-your-current-subscriptions.md): This topic describes how to view which Harness modules you are currently subscribed to, and how to view the details of your subscriptions. On the Harness Platform, you can view the following subscrip…
- [View the Usage of Your Subscriptions](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/view-the-usage-of-your-subscriptions.md): When you subscribe to a Harness module, you select a number of licenses for developers and monthly active users (MAUs) to include in your subscription. You can check how many of these licenses you’re…
- [Update Your Billing Information](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/update-your-billing-information.md): You can update your billing information on Harness.
- [Add a Billing Admin](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/add-a-billing-admin.md): Billing Admins can manage payments on the Harness Platform.
- [Access Your Subscription Invoices](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/access-your-subscription-invoices.md): To get a copy of your subscription invoice --  On the Harness Platform, on the left hand navigation, click Help. Select Submit a ticket. Complete the following fields in the form --  Feedback category
- [Cancel a Subscription](https://developer.harness.io/feature-flags/use-feature-flags/subscriptions-in-ff/cancel-a-subscription.md): To cancel your subscription --  On the Harness Platform, on the left hand navigation, click Help. Select Submit a ticket. Complete the following fields in the form --  Feedback category  --  Select Qu