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Flagsmith MCP Server

Updated June 2026✓ OfficialTrust grade A98/100

The Flagsmith MCP Server is Flagsmith's official, Speakeasy-generated Model Context Protocol server for its Core and SDK APIs, letting AI assistants read and manage feature flags, remote config values, and environment/identity segmentation directly from a conversation. Built by Flagsmith, it is officially maintained and best for Coding & Dev.

by Flagsmith

About

The Flagsmith MCP Server is Flagsmith's official, Speakeasy-generated Model Context Protocol server for its Core and SDK APIs, letting AI assistants read and manage feature flags, remote config values, and environment/identity segmentation directly from a conversation. It ships as an installable Desktop Extension (`mcp-server.mcpb`) for Claude Desktop — drag-and-drop install with no additional setup — and as an npm package (`flagsmith`) for CLI-based clients, started with `npx flagsmith start --token-auth <your-api-token>` and wired into Claude Code, Cursor, Gemini, and Windsurf via each client's standard MCP config or one-line `mcp add` command. Progressive discovery keeps the tool surface manageable across the full Flagsmith API rather than dumping every endpoint into context at once. Typical use: ask Claude to "list all feature flags enabled for the beta segment in production" or "toggle the new-checkout-flow flag off for the EU environment," with the assistant calling the live Flagsmith API instead of requiring a dashboard visit. NOTE: as of this writing the repo carries an explicit "not yet ready for production use" notice from its Speakeasy-generated setup flow — expect rough edges and check the repo before depending on it for anything mission-critical.

A
Reliable98/100
low confidence · 1 measured signal

Grade A (98/100, reliable) from 1 measured signal, based on repository evidence. Only one signal stands behind it, so treat the grade as provisional.

What was measured

  • Repository maintenance100/100 · weight 20

    The repository has been pushed to or released within the last six months. — last push 2026-03-13.

  • Source verification100/100 · weight 25

    The repository URL was confirmed to resolve against the live GitHub API and is not archived.

  • Provenance90/100 · weight 10

    Published and maintained by the vendor of the service it connects to, rather than by a third party.

  • Listing ↔ repository match100/100 · weight 5

    The listing name lines up with the linked repository Flagsmith/flagsmith-mcp.

What could not be measured

These contributed nothing to the score — not a penalty, not a zero. They are why the confidence reads the way it does.

  • Live MCP handshakeunknown

    No remote endpoint to handshake — this server installs and runs locally over stdio, so there is nothing to probe from the outside.

  • Measured uptimeunknown

    No probe history recorded for this server yet.

  • Tool-schema stabilityunknown

    Drift is a difference between two successive checks, and this server has none recorded.

Installation

npm / npx
npx flagsmith start --token-auth <your-api-token>

flagsmith confirmed live on the npm registry — checked August 17, 2026.

Frequently Asked Questions

What is Flagsmith MCP Server?
Flagsmith is an MCP server built by Flagsmith. The Flagsmith MCP Server is Flagsmith's official, Speakeasy-generated Model Context Protocol server for its Core and SDK APIs, letting AI assistants read and manage feature flags, remote config values, and environment/identity segmentation directly from a conversation. It ships as an installable Desktop Extension (`mcp-server.mcpb`) for Claude Desktop — drag-and-drop install with no additional setup — and as an npm package (`flagsmith`) for CLI-based clients, started with `npx flagsmith start --token-auth <your-api-token>` and wired into Claude Code, Cursor, Gemini, and Windsurf via each client's standard MCP config or one-line `mcp add` command. Progressive discovery keeps the tool surface manageable across the full Flagsmith API rather than dumping every endpoint into context at once. Typical use: ask Claude to "list all feature flags enabled for the beta segment in production" or "toggle the new-checkout-flow flag off for the EU environment," with the assistant calling the live Flagsmith API instead of requiring a dashboard visit. NOTE: as of this writing the repo carries an explicit "not yet ready for production use" notice from its Speakeasy-generated setup flow — expect rough edges and check the repo before depending on it for anything mission-critical.
Who built Flagsmith MCP Server?
Flagsmith MCP Server was built by Flagsmith.
Is Flagsmith MCP Server free?
Yes, Flagsmith MCP Server has a free option. The MCP server is free and open-source. Flagsmith: Free tier (50K requests/mo). Startup: $45/mo. Scale-up: $200/mo. Enterprise: Custom. Open-source self-hosted option.
How do I install Flagsmith MCP Server?
Install Flagsmith MCP Server with npm: npx flagsmith start --token-auth <your-api-token>
What does Flagsmith MCP Server integrate with?
Flagsmith MCP Server integrates with Claude Desktop, Cursor, VS Code, Windsurf, Cline.

Repo Health

Actively maintained

Local/stdio install — runs on your machine, so there is no remote endpoint to verify live. Trust signal below is from the source repo.

Last commit
6mo ago
Install
npm
Package
flagsmith

Quick Info

Install Type
npm
Author
Flagsmith
Categories
2
Integrations
5

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