Featureflip

About Featureflip

Featureflip is a feature flag management platform for developers, offering percentage-based rollouts, targeting rules, A/B tests, and kill switches through a real-time dashboard, API, or Terraform provider. Flags can be evaluated across 13 server and client SDKs (JavaScript, Node.js, Python, Go, Java, C#, Ruby, PHP, Swift, Flutter, Android, React, and Browser), with server SDKs evaluating in-process and client SDKs streaming updates over SSE. It also provides OpenFeature providers for Node.js, .NET, Python, Go, and Java, and an MCP server for creating and managing flags from an agent.

The platform detects flag staleness by reading hourly evaluation traffic per environment, classifying flags as fully rolled out, rolled back, no traffic, never used, stale (30 days), or dead (90 days). For dead flags, a GitHub Action opens one reviewable pull request per flag that removes the code path across the supported languages using AST transforms rather than an LLM, and archives the flag once the pull request is merged; flags not caught by this process can be removed manually over MCP.

Pricing consists of a free-forever Solo plan (1 project, 10 flags, 2 environments, 1 developer, 7-day audit logs, community support), a Pro plan at $49/month ($39/month billed annually, unlimited flags, 5 environments, 10 projects, up to 10 team members, 30-day audit logs, email support), and a Business plan at $149/month ($119/month billed annually, unlimited flags and environments, 25 projects, up to 25 team members, 90-day audit logs, priority support), with Enterprise pricing available on request. All plans include percentage rollouts, targeting rules, kill switches, all 13 SDKs, the Management API, and the Terraform provider, with pricing described as flat per plan and not metered by active users, service connections, evaluation volume, or overage.

Key features

• Automatic pull requests remove dead flag code across 13 languages via AST transforms, no LLM
• Percentage-based rollouts, A/B tests, and kill switches with instant, no-deploy toggling
• Surgical targeting by attributes, segments, and plan data with AND/OR condition groups
• Stale/dead flag detection from hourly evaluation traffic, per environment
• Manage flags as code with a Terraform provider
• 13 SDKs plus OpenFeature providers for Node.js, .NET, Python, Go, and Java

Frequently asked questions