mcp-keycloak

A Model Context Protocol server for Keycloak. It lets an MCP-capable client (Claude Desktop, Claude Code, etc.) inspect and manage Keycloak realms, users, clients, roles, and groups — with security controlled entirely by flags.

The design goal is safe by default: it starts read-only, scopes to an allowlist of realms, protects sensitive realms from mutation, and gates destructive operations behind an explicit opt-in.

Features

• Multi-realm — every tool takes a `realm` argument; scope it with an allowlist.
• Access modes — `read-only` → `read-write` → `admin`, layered so a mode never exposes tools above its level.
• Security flags — realm allowlist, protected realms, delete gating, dry-run, and JSON audit logging (see below).
• Two auth strategies — confidential-client service account (recommended) or admin username/password.
• Zero heavy dependencies — a thin fetch-based Admin REST client, plus the MCP SDK and zod.

Security model

These layers are independent — for example `admin` mode with `KEYCLOAK_ALLOW_DELETE=false` can create and update users but cannot delete them.

Tools

Read (`read-only`+): `list_realms`, `get_realm`, `list_users`, `get_user`, `count_users`, `list_clients`, `list_realm_roles`, `list_groups`

Write (`read-write`+): `create_user`, `update_user`, `reset_password`, `logout_user`

Admin (`admin`): `delete_user`

Quickstart — add to your agent

Published on npm as `@dockndevai/mcp-keycloak`. No clone or build needed — your MCP client runs it on demand with `npx`. Start in `read-only` mode; see `.env.example` for every variable and docs/CLIENTS.md for the full per-client guide.

Claude Code (CLI)

claude mcp add keycloak -e KEYCLOAK_URL="https://keycloak.example.com" -e KEYCLOAK_CLIENT_ID="admin-cli" -e KEYCLOAK_CLIENT_SECRET="your-secret" -e KEYCLOAK_MODE="read-only" -- npx -y @dockndevai/mcp-keycloak

Claude Desktop · Cursor · Windsurf — same block in `claude_desktop_config.json`, `.cursor/mcp.json`, or `~/.codeium/windsurf/mcp_config.json`:

{
  "mcpServers": {
    "keycloak": {
      "command": "npx",
      "args": [
        "-y",
        "@dockndevai/mcp-keycloak"
      ],
      "env": {
        "KEYCLOAK_URL": "https://keycloak.example.com",
        "KEYCLOAK_CLIENT_ID": "admin-cli",
        "KEYCLOAK_CLIENT_SECRET": "your-secret",
        "KEYCLOAK_MODE": "read-only"
      }
    }
  }
}

OpenAI Codex CLI — in `~/.codex/config.toml`:

[mcp_servers.keycloak]
command = "npx"
args = ["-y", "@dockndevai/mcp-keycloak"]
env = { KEYCLOAK_URL = "https://keycloak.example.com", KEYCLOAK_CLIENT_ID = "admin-cli", KEYCLOAK_CLIENT_SECRET = "your-secret", KEYCLOAK_MODE = "read-only" }

VS Code (GitHub Copilot, Agent mode) — in `.vscode/mcp.json`:

{
  "servers": {
    "keycloak": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@dockndevai/mcp-keycloak"
      ],
      "env": {
        "KEYCLOAK_URL": "https://keycloak.example.com",
        "KEYCLOAK_CLIENT_ID": "admin-cli",
        "KEYCLOAK_CLIENT_SECRET": "your-secret",
        "KEYCLOAK_MODE": "read-only"
      }
    }
  }
}

Configure

Copy `.env.example` and fill it in, or set the variables directly in your MCP client config. A confidential client with the `realm-management` roles you need is the recommended credential.

Run from source (development)

Prefer the published package above. To run from a clone:

npm install
npm run build
node dist/index.js   # with the environment variables set

Develop

npm run dev        # watch mode
npm test           # unit tests for the security policy
npm run typecheck

Publishing

This server ships a `server.json` for the official MCP registry and an `mcpName` for npm ownership validation. See **PUBLISHING.md** for publishing to npm and listing on the MCP registry, Smithery, Glama, Cursor, and PulseMCP.

License

MIT