Keycloak Model Context Protocol Server

A comprehensive Model Context Protocol (MCP) server for Keycloak administration, providing 80+ tools to manage users, realms, clients, roles, groups, sessions, events, organizations, protocol mappers, user attributes, client scopes, and identity providers directly from AI assistants like Claude Desktop or Cursor AI.

🚀 Features

👤 User Management

• ✅ Create, update, and delete users

• ✅ List, search, and get user details

• ✅ Reset user passwords

• ✅ Logout user sessions

• ✅ Manage user roles and groups

• ✅ NEW: User attributes management (critical for organization data)

🏛️ Realm Management

• ✅ List, create, update, and delete realms

• ✅ Get detailed realm settings and configurations

• ✅ Manage realm-level security policies

🔧 Client Management

• ✅ Register, update, and delete clients/applications

• ✅ List all clients in realms

• ✅ Configure client settings and redirect URIs

• ✅ NEW: Protocol mappers management (critical for JWT claims)

🎭 Role Management

• ✅ Create, update, and delete roles (realm and client-level)

• ✅ Assign and remove roles from users and groups

• ✅ List all roles and user role assignments

• ✅ NEW: Composite roles and role hierarchies

• ✅ NEW: Advanced role operations by ID

• ✅ NEW: Find users with specific roles

👥 Group Management

• ✅ Create, update, and delete user groups

• ✅ Add and remove users from groups

• ✅ Manage hierarchical group structures

• ✅ NEW: Group attributes management

• ✅ NEW: Child groups and subgroup management

• ✅ NEW: Group member listing and management

🏢 Organization Management ⭐ NEW

• ✅ Create, update, and delete organizations

• ✅ Add and remove organization members

• ✅ List organizations and members

• ✅ Organization attributes management

🔗 Identity Provider Management ⭐ NEW

• ✅ Create, update, and delete identity providers (SSO)

• ✅ Identity provider mapper management

• ✅ SAML and OIDC provider configuration

• ✅ External user attribute mapping

🎯 Client Scopes Management ⭐ NEW

• ✅ Create, update, and delete client scopes

• ✅ Protocol mappers for client scopes

• ✅ Token scope management

📊 Session & Event Management

• ✅ List active user sessions

• ✅ Monitor authentication and admin events

• ✅ Clear event logs and manage session lifecycles

🛡️ Advanced Features

• ✅ Bulletproof authentication with fresh client instances

• ✅ Comprehensive error handling with detailed logging

• ✅ Cross-platform support (Windows, macOS, Linux)

• ✅ Production-ready with TypeScript and robust architecture

• ✅ Organization JWT Claims - Solve organization visibility in tokens

• ✅ 80+ Tools - Complete Keycloak administration coverage

Related MCP server: keycloak-source-mcp

📋 Prerequisites

• Node.js 18 or higher

• Running Keycloak instance (local or remote)

• Keycloak admin credentials with appropriate permissions

• AI Assistant that supports MCP (Claude Desktop, Cursor AI, etc.)

📦 Installation

Global Installation (Recommended)

npm install -g keycloak-mcp-server

Using NPX (No Installation Required)

npx keycloak-mcp-server

Local Project Installation

npm install keycloak-mcp-server

Local Development

git clone https://github.com/M0-AR/keycloak-mcp-server.git
cd keycloak-mcp-server
npm install
npm run build

⚙️ Configuration

For Cursor AI

Add to your Cursor MCP configuration file (~/.cursor/mcp.json):

Option 1: Using NPX (Recommended)

{
  "mcpServers": {
    "keycloak": {
      "command": "npx",
      "args": ["keycloak-mcp-server"],
      "env": {
        "KEYCLOAK_URL": "https://your-keycloak-instance.com",
        "KEYCLOAK_ADMIN": "your-admin-username",
        "KEYCLOAK_ADMIN_PASSWORD": "your-admin-password"
      }
    }
  }
}

Option 2: If Installed Globally

{
  "mcpServers": {
    "keycloak": {
      "command": "keycloak-mcp-server",
      "env": {
        "KEYCLOAK_URL": "https://your-keycloak-instance.com", 
        "KEYCLOAK_ADMIN": "your-admin-username",
        "KEYCLOAK_ADMIN_PASSWORD": "your-admin-password"
      }
    }
  }
}

For Claude Desktop

Add to your Claude Desktop configuration:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "keycloak": {
      "command": "npx",
      "args": ["keycloak-mcp-server"],
      "env": {
        "KEYCLOAK_URL": "https://your-keycloak-instance.com",
        "KEYCLOAK_ADMIN": "your-admin-username",
        "KEYCLOAK_ADMIN_PASSWORD": "your-admin-password"
      }
    }
  }
}

🌍 Environment Variables

��️ Available Tools (80+ Tools)

👤 User Management Tools

create-user

Creates a new user in a specified realm.

Create a user in "master" realm: username "john.doe", email "john@example.com", first name "John", last name "Doe"

update-user

Updates user information (email, names, enabled status).

Update user "user-id-123" in "master" realm to change email to "newemail@example.com"

delete-user

Deletes a user from a realm.

Delete user with ID "user-id-123" from "master" realm

list-users

Lists all users in a realm.

List all users in the "master" realm

search-users

Search users with filters (username, email, firstName, lastName).

Search for users with email containing "wateen.io" in "master" realm, limit 10 results

get-user

Get detailed information about a specific user.

Get details for user ID "user-id-123" in "master" realm

reset-user-password

Reset a user's password.

Reset password for user "user-id-123" in "master" realm to "newPassword123", make it temporary

logout-user

Logout all sessions for a specific user.

Logout all sessions for user "user-id-123" in "master" realm

set-user-attributes ⭐ NEW

Set user attributes (critical for organization data storage).

Set organization attribute for user "user-id-123" in "master" realm: {"organization": ["wateen-corp"]}

get-user-attributes ⭐ NEW

Get user attributes including unmanaged attributes.

Get all attributes for user "user-id-123" in "master" realm

🏛️ Realm Management Tools

list-realms

Lists all available realms.

Show me all available realms in Keycloak

create-realm

Creates a new realm with configurable settings.

Create a new realm called "company" with display name "Company Realm", enabled

update-realm

Updates realm settings and configurations.

Update realm "company" to change display name to "Updated Company"

delete-realm

Deletes an existing realm.

Delete the realm "test-realm"

get-realm-settings

Retrieves detailed settings of a realm.

Get detailed settings for the "master" realm

🔧 Client Management Tools

create-client

Registers a new client/application in a realm.

Create client "my-app" in "master" realm with redirect URIs ["http://localhost:3000/*"]

update-client

Updates client settings (redirect URIs, protocol mappers, etc.).

Update client "my-app" in "master" realm to add new redirect URI "https://app.example.com/*"

delete-client

Removes a client from a realm.

Delete client "old-app" from "master" realm

list-clients

Lists all clients in a realm.

List all clients in the "master" realm

create-protocol-mapper ⭐ NEW

Create protocol mappers for clients (critical for JWT organization claims).

Create organization group mapper for client "my-app" in "master" realm to include "organization" claim in JWT

update-protocol-mapper ⭐ NEW

Update existing protocol mappers.

Update protocol mapper "mapper-id-123" for client "my-app" in "master" realm

delete-protocol-mapper ⭐ NEW

Delete protocol mappers from clients.

Delete protocol mapper "mapper-id-123" from client "my-app" in "master" realm

list-protocol-mappers ⭐ NEW

List all protocol mappers for a client.

List all protocol mappers for client "my-app" in "master" realm

🎯 Client Scopes Management Tools ⭐ NEW

create-client-scope

Create a new client scope for managing token scopes.

Create client scope "organization-scope" in "master" realm for organization claims

update-client-scope

Update existing client scope.

Update client scope "scope-id-123" in "master" realm to change description

delete-client-scope

Delete a client scope.

Delete client scope "scope-id-123" from "master" realm

list-client-scopes

List all client scopes in a realm.

List all client scopes in the "master" realm

get-client-scope

Get details of a specific client scope.

Get details for client scope "scope-id-123" in "master" realm

create-client-scope-protocol-mapper ⭐ NEW

Create protocol mappers for client scopes.

Create organization mapper for client scope "organization-scope" in "master" realm

update-client-scope-protocol-mapper ⭐ NEW

Update protocol mappers in client scopes.

Update protocol mapper "mapper-id-123" in client scope "scope-id-456" in "master" realm

delete-client-scope-protocol-mapper ⭐ NEW

Delete protocol mappers from client scopes.

Delete protocol mapper "mapper-id-123" from client scope "scope-id-456" in "master" realm

list-client-scope-protocol-mappers ⭐ NEW

List protocol mappers for a client scope.

List all protocol mappers for client scope "scope-id-123" in "master" realm

🏢 Organization Management Tools ⭐ NEW

create-organization

Create a new organization.

Create organization "wateen-corp" with description "Wateen Corporation" in "master" realm

update-organization

Update existing organization.

Update organization "org-id-123" in "master" realm to change name to "Updated Corp"

delete-organization

Delete an organization.

Delete organization "org-id-123" from "master" realm

list-organizations

List all organizations in a realm.

List all organizations in "master" realm with search "wateen", limit 10

get-organization

Get details of a specific organization.

Get details for organization "org-id-123" in "master" realm

add-organization-member

Add a user to an organization.

Add user "user-id-123" to organization "org-id-456" in "master" realm

remove-organization-member

Remove a user from an organization.

Remove user "user-id-123" from organization "org-id-456" in "master" realm

list-organization-members

List all members of an organization.

List all members of organization "org-id-123" in "master" realm, limit 20

🎭 Role Management Tools

create-role

Creates roles at realm or client level.

Create a realm role "manager" with description "Manager role" in "master" realm

update-role

Modifies role attributes.

Update role "manager" in "master" realm to change description to "Updated manager role"

delete-role

Deletes roles.

Delete role "old-role" from "master" realm

list-roles

Lists all roles in a realm.

List all roles in the "master" realm

list-client-roles

Lists all roles defined on a client.

List all roles on client "my-app" in "master" realm

assign-role-to-user

Assigns a realm role to a user, or a client role when clientId is supplied.

Assign role "manager" to user "user-id-123" in "master" realm
Assign client role "editor" on client "my-app" to user "user-id-123" in "master" realm

remove-role-from-user

Removes a realm role from a user, or a client role when clientId is supplied.

Remove role "manager" from user "user-id-123" in "master" realm
Remove client role "editor" on client "my-app" from user "user-id-123" in "master" realm

get-user-roles

Gets all roles directly assigned to a user, as { realmMappings, clientMappings }.

Get all roles for user "user-id-123" in "master" realm

create-composite-role ⭐ NEW

Create composite roles (role hierarchies).

Create composite role from "parent-role-id" with child roles ["child-role-1", "child-role-2"] in "master" realm

get-composite-roles ⭐ NEW

Get composite roles for a role.

Get composite roles for role "role-id-123" in "master" realm, limit 10

delete-composite-roles ⭐ NEW

Delete composite roles from a role.

Remove composite roles ["child-role-1", "child-role-2"] from role "parent-role-id" in "master" realm

get-role-by-id ⭐ NEW

Get role details by ID.

Get role details for role ID "role-id-123" in "master" realm

update-role-by-id ⭐ NEW

Update role by ID.

Update role "role-id-123" in "master" realm to change name to "new-role-name"

delete-role-by-id ⭐ NEW

Delete role by ID.

Delete role with ID "role-id-123" from "master" realm

find-users-with-role ⭐ NEW

Find users with a realm role, or with a client role when clientId is supplied.

Find all users with role "manager" in "master" realm, limit 20
Find all users with client role "editor" on client "my-app" in "master" realm

assign-role-to-group ⭐ NEW

Assign a realm role to a group, or a client role when clientId is supplied.

Assign role "developer" to group "group-id-123" in "master" realm
Assign client role "editor" on client "my-app" to group "group-id-123" in "master" realm

remove-role-from-group ⭐ NEW

Remove a realm role from a group, or a client role when clientId is supplied.

Remove role "developer" from group "group-id-123" in "master" realm

get-group-roles ⭐ NEW

Get roles assigned to a group, as { realmMappings, clientMappings }.

Get all roles for group "group-id-123" in "master" realm

list-available-group-roles ⭐ NEW

List roles a group could still be granted — realm roles, or a client's roles when clientId is supplied.

List available roles for group "group-id-123" in "master" realm

list-composite-group-roles ⭐ NEW

List composite roles for a group.

List composite roles for group "group-id-123" in "master" realm

👥 Group Management Tools

create-group

Creates user groups.

Create a group called "developers" in "master" realm

update-group

Updates group attributes.

Update group "group-id-123" in "master" realm to change name to "senior-developers"

delete-group

Deletes groups.

Delete group "group-id-123" from "master" realm

list-groups

Lists all groups in a realm.

List all groups in the "master" realm

manage-user-groups

Adds or removes users from groups.

Add user "user-id-123" to group "group-id-456" in "master" realm

set-group-attributes ⭐ NEW

Set group attributes (organization metadata).

Set organization attributes for group "group-id-123" in "master" realm: {"department": ["engineering"]}

get-group-attributes ⭐ NEW

Get group attributes.

Get all attributes for group "group-id-123" in "master" realm

create-child-group ⭐ NEW

Create a child group (subgroup).

Create child group "junior-devs" under parent group "group-id-123" in "master" realm

list-sub-groups ⭐ NEW

List subgroups of a parent group.

List subgroups of parent group "group-id-123" in "master" realm, limit 10

list-group-members ⭐ NEW

List members of a group.

List all members of group "group-id-123" in "master" realm, limit 20

🔗 Identity Provider Management Tools ⭐ NEW

create-identity-provider

Create a new identity provider for SSO integration.

Create SAML identity provider "company-saml" in "master" realm with SSO URL and certificate

update-identity-provider

Update an existing identity provider.

Update identity provider "company-saml" in "master" realm to change display name

delete-identity-provider

Delete an identity provider.

Delete identity provider "old-saml" from "master" realm

list-identity-providers

List all identity providers in a realm.

List all identity providers in "master" realm

get-identity-provider

Get details of a specific identity provider.

Get details for identity provider "company-saml" in "master" realm

create-identity-provider-mapper

Create a mapper for identity provider (external user mapping).

Create user attribute mapper for identity provider "company-saml" in "master" realm

update-identity-provider-mapper

Update an identity provider mapper.

Update mapper "mapper-id-123" for identity provider "company-saml" in "master" realm

📊 Session & Event Management Tools

list-sessions

Lists all active sessions in a realm.

List all active sessions in "master" realm

get-user-sessions

Lists active sessions for a specific user.

Get active sessions for user "user-id-123" in "master" realm

list-events

Retrieves authentication and admin events.

List last 10 events in "master" realm

clear-events

Clears event logs.

Clear all events in "master" realm

🧪 Testing & Development

Testing with MCP Inspector

npx @modelcontextprotocol/inspector npx keycloak-mcp-server

Visit http://localhost:6274 to test all 80+ tools interactively.

Local Development

npm run watch    # Auto-rebuild on changes
npm run dev     # Test server directly

Stress Testing

The server has been stress-tested with 80+ consecutive operations without authentication failures, demonstrating production-level reliability.

🔧 Architecture

Bulletproof Authentication System

• Fresh Client Instances: Creates new KcAdminClient for every request

• Retry Logic: Exponential backoff with 2 attempts maximum

• Connection Management: 15-second timeout with proper cleanup

• Error Handling: Comprehensive error messages for all scenarios

TypeScript Implementation

• Type Safety: Full TypeScript coverage with proper interfaces

• Error Handling: Detailed error messages and logging

• Modular Design: Clean separation of concerns

📈 Production Ready

This package has been extensively tested and validated:

• ✅ 80+ consecutive operations without authentication failures

• ✅ Cross-realm operations working seamlessly

• ✅ Parallel tool execution supported

• ✅ Complex search queries with multiple filters

• ✅ Error recovery and detailed logging

• ✅ TypeScript compilation with zero errors

• ✅ Complete Keycloak API coverage with organization management

🎯 JWT Organization Problem Solved

This package specifically addresses the common JWT organization problem:

• ✅ User Attributes: Store organization data in user attributes

• ✅ Protocol Mappers: Create mappers to include organization in JWT tokens

• ✅ Client Scopes: Manage token scopes for organization claims

• ✅ Organizations: Full organization lifecycle management

• ✅ Group Attributes: Store organization metadata in groups

Example workflow:

1. Create organization using create-organization

2. Set user organization attribute using set-user-attributes

3. Create protocol mapper using create-protocol-mapper to include organization in JWT

4. Add user to organization using add-organization-member

🔒 Security Best Practices

• Use environment variables for credentials

• Enable HTTPS for production Keycloak instances

• Use strong admin passwords

• Regularly rotate credentials

• Monitor admin events and sessions

🤝 Contributing

1. Fork the repository

2. Create a feature branch: git checkout -b feature/amazing-feature

3. Commit changes: git commit -m 'Add amazing feature'

4. Push to branch: git push origin feature/amazing-feature

5. Open a Pull Request

📄 License

MIT License - see LICENSE file for details.

🆘 Support

• GitHub Issues: Create an issue

• Documentation: Check this README for comprehensive examples

• MCP Documentation: Model Context Protocol

🔗 Related Projects

• Claude Desktop - AI assistant supporting MCP

• Cursor AI - AI-powered code editor with MCP support

• Model Context Protocol - Protocol specification

• Keycloak - Open source identity and access management

📊 Package Stats

• 80+ Tools: Complete Keycloak administration coverage

• Production Ready: Extensively tested and validated

• TypeScript: Full type safety and modern development experience

• Cross-Platform: Windows, macOS, and Linux support

• Zero Dependencies Issues: Robust dependency management

• Organization Management: Solve JWT organization visibility problems

• Advanced Features: Protocol mappers, client scopes, identity providers

Made with ❤️ for the Keycloak and AI community