# Feature flags in PostHog Web - Docs

The [PostHog web app](https://app.posthog.com) is home base for feature flags. It's where you create a flag, decide who gets it, watch the rollout, and turn it off when you need to – all without a deploy.

Open **Feature flags** in [PostHog](https://app.posthog.com) to see every flag in the project with its status, type, and last-modified date. Open a flag to edit its release conditions, inspect which users match, test how it evaluates, and see the activity log of who changed what.

## What you can do here

-   **[Create feature flags](/docs/feature-flags/creating-feature-flags.md)** – set up boolean, multivariate, or remote config flags and define their release conditions.
-   **[Add flag code to your app](/docs/feature-flags/adding-feature-flag-code.md)** – the snippet that reads the flag on the other side, for each SDK.
-   **[Test your flag](/docs/feature-flags/testing.md)** – check how a flag evaluates for a specific user before you widen the rollout.
-   **[Schedule flag changes](/docs/feature-flags/scheduled-flag-changes.md)** – queue an enable, disable, or condition change for a future date, including on a recurring schedule.
-   **[Manage early access features](/docs/feature-flags/early-access-feature-management.md)** – let users opt themselves in and out of a flagged feature.
-   **[Clean up stale flags](/docs/feature-flags/cleaning-up-stale-flags.md)** – find flags nothing has evaluated recently and retire them along with the dead code.
-   **Manage flags with [PostHog AI](/docs/posthog-ai.md)** – describe the flag you want and PostHog AI creates or updates it, or ask it which flags have gone stale. It's an interaction mode inside the web app, not a separate surface. See [Manage flags with PostHog AI](/docs/feature-flags/manage-flags-ai.md).

Before you widen a rollout, the flag detail view also shows the **blast radius** for a release condition – roughly how many users it would affect relative to your total – so a "10% of enterprise accounts" change isn't a guess.

## Related

-   Manage the same flags from your editor over [MCP](/docs/feature-flags/surfaces/mcp.md).
-   Evaluate and manage flags programmatically with the [API](/docs/feature-flags/surfaces/api.md).
-   Understand how a value gets decided in [server-side local evaluation](/docs/feature-flags/local-evaluation.md).

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