Flagsmith MCP Server

@Flagsmith

Basic information

About Flagsmith MCP Server

Create, manage, and clean up Flagsmith feature flags directly from your AI tool. Flagsmith is an open source feature flag and remote config platform you can self-host or run in the cloud, and the MCP server lets you control flags, environments, and segments through natural langua

#developer-tools #feature-flags#remote-config

Flagsmith MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "flagsmith": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "http://mcp.flagsmith.com/mcp"
      ]
    }
  }
}

Flagsmith MCP Server tools

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Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is Flagsmith?

The Flagsmith MCP Server connects your Flagsmith projects to AI assistants like Cursor, VS Code, and Claude. It lets you create, read, update, and toggle feature flags, manage environments, and adjust segment targeting using natural language, without leaving your editor. The server works with Flagsmith Cloud or any self-hosted Flagsmith instance.

How to use Flagsmith?

Add the server to any MCP-compatible client (Cursor, VS Code, Claude Desktop, Windsurf, or any IDE with MCP support), then provide your Flagsmith API key and, if you self-host, your API URL. Self-hosted users set FLAGSMITH_API_URL to their own instance. Flagsmith Cloud users can leave the default. Authentication via OAuth is also available.

Key features of Flagsmith

Create, read, update, and toggle feature flags across environments
Manage segments and targeting rules through natural language
Inspect flag states and configuration without opening the dashboard
Find and remove stale flags from your project
Works with Flagsmith Cloud or any self-hosted Flagsmith instance
Open source, with no vendor lock-in

Use cases of Flagsmith

Flagging a new feature behind a flag while you write the code, in one conversation
Toggling a flag on or off in a specific environment during testing or rollout
Auditing and cleaning up stale flags across a project
Adjusting segment targeting rules without context-switching to the dashboard

Frequently asked questions

What is a feature flag?

A feature flag is a technique that lets you turn features on or off without deploying new code, so you can release, test, and roll back safely.

Do I need a Flagsmith account?

Yes. You need a Flagsmith API key from either Flagsmith Cloud or your own self-hosted instance.

Can I use this with a self-hosted Flagsmith?

Yes. Set the API URL to your own instance and the server works exactly as it does against Flagsmith Cloud.

Is Flagsmith open source?

Yes. Flagsmith is open source, so you can self-host it and avoid vendor lock-in.

Which AI tools are supported?

Any client that supports the MCP (Model Context Protocol), including Cursor, VS Code, Claude Desktop, and Windsurf.

Comments

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