Unleash MCP

A purpose-driven Model Context Protocol (MCP) server for managing Unleash feature flags. This server enables LLM-powered coding assistants to create and manage feature flags following Unleash best practices. Its 11 documented tools cover flag, change. It runs locally over stdio via the published package.

People connecting this server to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-10 · ★ 21 · #71 OF 848 MAINTAINED OTHER · VERIFIED 2026-08-25

TypeScript servers · how we verify → /methodology

01 · Install Unleash MCP

before you install - you'll need

Set UNLEASH_BASE_URL, UNLEASH_PAT before connecting. UNLEASH_DEFAULT_PROJECT, LOG_LEVEL, APP_LOG_FILE, MCP_STDIO_LOG_FILE are optional or environment-specific per the README.

Claude Code

claude mcp add unleash-unleash-mcp -- npx -y @unleash/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "unleash-unleash-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@unleash/mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license no standard license detected - usage rights unclear; check the repo before commercial use

npm package @unleash/mcp - published under the repo owner's npm scope (@unleash)

registry vendor namespace io.getunleash - domain-verified with the official MCP registry

03 · What Unleash MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can create a feature flag in Unleash, discover existing feature flags to avoid duplicates, configure rollout strategies for a feature flag (does not enable the flag), and list all feature flags in a project, with optional pagination and sort order.

Capability map

Tools grouped from the project's README - what Unleash MCP lets an agent do.

read & search

3 tools - e.g. Surfaces a feature flag's metadata and its activation strategies.; Lists all feature flags in a project, with optional pagination and sort order.; Lists Unleash projects available to the configured token…

get_flag_state · list_flags · list_projects

create & write

1 tool - e.g. Creates a feature flag in Unleash.

create_flag

Evaluate

1 tool - e.g. Scores risk and recommends feature flag usage.

evaluate_change

Detect

1 tool - e.g. Discovers existing feature flags to avoid duplicates.

detect_flag

Wrap

1 tool - e.g. Provides guidance on how to wrap a change in a feature flag.

wrap_change

update

1 tool - e.g. Configures rollout strategies for a feature flag (does not enable the flag).

set_flag_rollout

Toggle

1 tool - e.g. Enables or disables a feature flag in an environment.

toggle_flag_environment

delete

1 tool - e.g. Deletes a feature flag's strategy from an environment.

remove_flag_strategy

Latest releases

v0.4.1 · 2026-07-06

Unexpected token '◇', "◇ injected"... is not valid JSON · New Contributors · @nunogois made their first contribution in

v0.4.0 · 2026-06-08

Let's drop the experimental warning (only keep it for the remote MCP) · attribute outbound Admin API calls to the calling MCP client · complete tool reference, document MCP resources, expand risk model · New…

v0.3.0 · 2026-05-26

New features · remote mcp server · show project options · remote mcp docs · add list_flags and list_projects tools (and route detect_flag inventory through them) · release process · Missing package json entries…

04 · Who maintains Unleash MCP

unleash-mcp is maintained by unleash. It's the only MCP server we track from this author; the repo dates to Oct 2025.

05 · Facts

repository: github.com/unleash/unleash-mcp
category: other - ranked #71 of 848 actively-maintained other servers as of 2026-08-25.
release cadence: 2 releases in the last 90 days (latest 2026-07-06)
registry: io.getunleash/unleash-mcp (active, first published 2025-11-18 · 13 versions)
packages: npm:@unleash/mcp

06 · Unleash MCP FAQ

Is Unleash MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-10 and it shipped 2 releases in the last 90 days. We re-verify nightly.

What can Unleash MCP do?

How do I install Unleash MCP?

Run `npx -y @unleash/mcp`. The README documents 6 environment variables (UNLEASH_BASE_URL, UNLEASH_PAT, UNLEASH_DEFAULT_PROJECT…) to set first. Set UNLEASH_BASE_URL, UNLEASH_PAT before connecting. UNLEASH_DEFAULT_PROJECT, LOG_LEVEL, APP_LOG_FILE, MCP_STDIO_LOG_FILE are optional or environment-specific per the README. You can also paste the ready-made client config above.

Does Unleash MCP run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Unleash MCP

Alternatives to Unleash MCP

Maintained other servers if Unleash MCP isn't the fit.

More MCP servers to compare · Unstoppable Domains · Changelogai · Mdshare · Safe Docx · Async Parallel Antigravity for Codex & Claude Code

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