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Flagsmith MCP Server

Flagsmith API functionality accessible directly within AI development environments.

Data last scanned today · Reviewed today

443 tools★ 0TypeScript

Overview

The Flagsmith MCP Server provides a bridge between the Flagsmith feature flagging API and AI assistants. It enables developers to interact with the Flagsmith Core and SDK APIs to manage feature flags and configurations without leaving their AI-driven workflow context.

Our verdict

This server carries a high risk level with a security score of 21/100. It is community-maintained rather than official, lacks an explicit license, and has not been editorially reviewed. Given these factors and the lack of clarity regarding authentication and read-only safety, it is intended only for experimental or non-critical development environments.

Reduces supply-chain risk with only 5 direct dependencies
Provides specific documentation for API integration
Offers a pre-built MCP bundle for simple installation

Community-maintained project with no official vendor backing
Missing license creates ambiguity regarding legal usage terms
High risk score due to lack of security review and maintenance

Setup

Claude Desktop

{
  "mcpServers": {
    "flagsmith-mcp": {
      "args": [
        "-y",
        "flagsmith"
      ],
      "command": "npx"
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows), then restart Claude Desktop. Some servers require API keys or tokens as environment variables — check the project's README and add an "env" object if needed.

No read-only mode — running this grants full read/write access.
No built-in authentication — anyone with access to this config can invoke every tool it exposes.

Tools

Tool	Description	Risk
list_tools	Lists all available tools with their names and descriptions.	low
describe_tool	Returns the input schema for one or more tools by name.	low
execute_tool	Executes a tool by name with the provided input parameters.	medium

Compatibility

Client	Local	Docker	Remote	Read-only
Claude Desktop
Cursor
VS Code
Windsurf
ChatGPT

Frequently asked questions

›Is this server ready for production use?

No, the README explicitly states that this MCP server is not yet ready for production use.

›How can I reduce the token usage of this server?

You can enable dynamic mode by adding the --mode dynamic flag to your startup arguments, which exposes only a small set of meta-tools instead of the full tool list.

›Can I install the Flagsmith MCP server as a Claude Desktop extension?

Yes, you can install it as a Desktop Extension by dragging and dropping the provided mcp-server.mcpb file directly onto the Claude Desktop application.

›Where can I find a list of all available server command arguments?

You can view all available server arguments by running the command npx flagsmith --help in your terminal.