Develop faster with AI, safer with GrowthBook
Connect GrowthBook to Claude, Cursor, VS Code, and more to enable feature flags and experimentation for agentic workflows and analysis.
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Add GrowthBook to your AI tool in minutes
Get a GrowthBook API Key
Sign up for a free account or connect to your self-hosted instance. Generate an API key from account settings.
Add the MCP server config
Paste the JSON block into your AI tool’s MCP settings. Works with Cursor, Claude Code, VS Code, and any MCP-compatible tool.
Start prompting
Ask your AI assistant to create flags, check experiments, analyze past experiments. No switching tabs.
Start learning with these prompts
Automatically add feature gates
Set up experiments from your editor
Clean up automatically
Ask Claude for updates
Start planning with a brainstorm
Go from coding velocity to shipping with confidence
Ship fast from your workflow
AI coding tools make it easy to write and deploy features quickly. Feature flags let you control who sees what and measure the impact. With the MCP server, you can automate feature flag setup and you’re one chat away from an experiment.
More context for prompts and agents
The MCP server brings GrowthBook context and capabilities to your AI tool. Bring your policies and templates from GrowthBook to your AI tool for context. Review your entire experimentation program before your next sprint planning session. Reduce technical debt with a stale-flag cleanup agent.
Build a culture of experimentation
Just because you can build it, doesn’t mean you should. Only 20% of product changes have a positive impact on core business metrics. For teams already living in Cursor or Claude Code, GrowthBook fits into your workflow rather than interrupting it.
One warehouse-native platform for modern product development
Experimentation
Feature Flags
Product Analytics
“GrowthBook gave us a modern experimentation and release platform that actually fits how Dropbox works. We can run analytics directly on our data lake, roll features out safely in stages, and support teams across different stacks without duplicating data or tooling.”
“Being able to turn a feature on and off with a flip of a switch is fantastic... That’s so much easier than having to do a deploy or a roll-back.”
“People only see the wins, but there’s actually greater value in avoiding losses. We’ve stopped changes that could have cost millions.”
“GrowthBook has changed the way we think about experiments... It allowed us to uplevel our code, speed up decision-making, and focus on what we do best.”
“Experimentation showed what customers actually do rather than what we assume they’ll do.”
“We don’t need any code changes, we don’t need an app release. We just configure the new tests and launch right away.”
"We are always experimenting now. It’s a natural part of product development. This is due to GrowthBook and the ease of usage both in the UX and in the seamless integration with Snowflake/DWH."
"GrowthBook's results speak for themselves. Every time we do a test, we see benefits for our audiences and our partners. These posters are our one shot, and we wouldn't want to fly blind."
“GrowthBook lets us build experiments exactly how we want. The ability to target based on culture and geography, as granular as needed, is a major win for us.”
"GrowthBook's results speak for themselves. Every time we do a test, we see benefits for our audiences and our partners. These posters are our one shot, and we wouldn't want to fly blind."
"We are always experimenting now. It’s a natural part of product development. This is due to GrowthBook and the ease of usage both in the UX and in the seamless integration with Snowflake/DWH."
“GrowthBook gave us a modern experimentation and release platform that actually fits how Dropbox works. We can run analytics directly on our data lake, roll features out safely in stages, and support teams across different stacks without duplicating data or tooling.”
FAQs
MCP (Model Context Protocol) is a standard that connects AI models with external software, databases, workflows, and tools. GrowthBook launched the first open-source production MCP server for experimentation and product development in early 2025. It brings feature flags and testing into AI development environments so engineering teams can measure what they ship without breaking flow.
Any AI tool that supports the Model Context Protocol works with the GrowthBook MCP server, including Claude Code, Cursor, VS Code, and Codex. For tools without MCP support, custom agents you build yourself, or any HTTP client, the REST API exposes the same functionality.
Yes, GrowthBook's MCP server is 100% open source. You can inspect the code, verify the implementation, and contribute improvements at github.com/growthbook/growthbook-mcp. GrowthBook itself is fully open source at github.com/growthbook/growthbook. The REST API runs on code you can read.
Yes. The MCP server connects to your GrowthBook instance (cloud or self-hosted) to create and manage feature flags and experiments. Setup takes minutes. See docs.growthbook.io/integrations/mcp for tool-specific instructions.
Yes. Teams use GrowthBook to run A/B tests comparing LLM providers, prompt variations, and model versions — measuring impact on real user metrics rather than benchmark scores. The MCP server lets you set up those experiments from your editor.
The MCP server runs locally on your machine. It only accesses GrowthBook’s public API endpoints. Confirm data privacy with your selected AI tool.
GrowthBook also exposes a REST API that delivers the same capabilities to any HTTP client, including custom agents, CI jobs, and internal tools. See our AI-native development page for the full picture of how GrowthBook supports humans and agents working together.
Ready to ship faster?
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