plugmyagent

Unleash

Dev Utilities No key

AuthenticationNo key
Rate limitSelf-hosted open source: unlimited flags, users, and API calls; limited by your own infrastructure.

Documentation: docs.getunleash.io ยท Checked Sep 13, 2026

About

Unleash is the most-starred open-source feature-flag platform on GitHub, licensed under Apache 2.0 and free to self-host with no limits. It supports gradual rollouts, A/B testing, and kill switches through 15 official SDKs plus many community ones. You run the server with Docker alongside a Postgres database, and clients fetch flag definitions through a simple API. A managed cloud version exists for teams that prefer not to host it.

Details

No key needed. You can call it right away.

Auth: No key

Rate limit: Self-hosted open source: unlimited flags, users, and API calls; limited by your own infrastructure.

Verified: 2026-09-13

Best for: feature flags self-hosting gradual rollouts

Read the docs Back to catalog

Setup

  1. Start Unleash and Postgres with Docker Compose.
  2. Log in to the admin UI with the default credentials and change them.
  3. Create a feature flag and define activation strategies.
  4. Generate a client API token for your application.
  5. Fetch flag states from the client API with the token.
Sign up