Better-Auth

Enterprise authentication server enabling AES-256 encryption, multi-protocol support, and real-time threat detection for OAuth2, SAML, and LDAP workflows.

javascript

GitHub Stars

javascript

Language

4 months ago

First Indexed

3 weeks ago

Catalog Refreshed

Documentation & install

Readme and setup notes from the catalogue, plus a client-ready config you can copy for your MCP host.

Installation

Add the following to your MCP client configuration file.

Configuration

View docs

{
  "mcpServers": {
    "mcp-mirror-nahmanmate_better-auth-mcp-server": {
      "command": "node",
      "args": [
        "/path/to/better-auth-mcp-server/build/index.js"
      ],
      "env": {
        "LOG_LEVEL": "info|debug|error",
        "BETTER_AUTH_ENV": "development|staging|production",
        "BETTER_AUTH_API_KEY": "your-api-key",
        "BETTER_AUTH_PROJECT_ID": "your-project-id"
      }
    }
  }
}

The Better-Auth MCP Server provides enterprise-grade authentication management with AES-256 encryption, multi-protocol support, and real-time threat detection. It integrates with your applications via MCP tooling to analyze, configure, test, and migrate authentication flows in a structured, automated way.

How to use

Use the MCP client to interact with the Better-Auth MCP Server for common authentication tasks. You can initialize Better-Auth in your project, configure providers with your project ID and API key, validate core login flows, and generate migration plans from NextAuth or similar implementations. The server exposes a set of tools that you invoke through the MCP client, allowing you to automate setup, testing, and migration workflows without manually wiring authentication code.

How to install

Prerequisites: you should have Node.js and npm (or npx) installed on your development machine. Ensure you have access to the command line where you will run the MCP server setup and build steps.

Step 1: Clone the repository and install dependencies.

Step 2: Build the server.

Step 3: Run the server locally for development (if you are working on the MCP server itself) and use the Inspector for debugging.

Below are the concrete commands shown in the README that enable installation and development for this MCP server.

Configuration and environment

# Core environment for Better-Auth MCP Server
# Required
BETTER_AUTH_PROJECT_ID=your-project-id
BETTER_AUTH_API_KEY=your-api-key

# Optional
BETTER_AUTH_ENV=development|staging|production
LOG_LEVEL=info|debug|error

Usage examples

Initialize Better-Auth in your project using the MCP client tool with your project credentials.

Debugging and development notes

MCP servers communicate over stdio. For debugging, use the MCP Inspector, which can be run via a dedicated script to provide a browser-accessible debugging URL.

Migration and testing workflows

The server provides tools to analyze current authentication implementations, generate migration plans, and validate security and user flows. Use the MCP client to run analyses, create a migration path, and test login, registration, password reset, and 2FA flows across your project.

Additional resources

Refer to the built-in resources exposed by Better-Auth, such as the current configuration and logs at better-auth://config and better-auth://logs, for inspection and troubleshooting.

Notes

The MCP server assumes you provide the necessary credentials and environment configuration. Follow security best practices to manage API keys, enforce access controls, and enable audit logging.

Troubleshooting

If you encounter issues during installation or runtime, verify that environment variables are set correctly, ensure the build step completes successfully, and consult the MCP Inspector for debugging guidance.

Available tools

analyze_project

Analyze project structure to provide authentication setup recommendations.

setup_better_auth

Configure authentication providers with project ID and API key.

analyze_current_auth

Detect existing auth.js or next-auth implementations in the project.

generate_migration_plan

Create a step-by-step migration plan for replacing existing auth implementations.

test_auth_flows

Validate login, registration, password reset, and 2FA flows.

test_security

Run OWASP-aligned security checks on the authentication stack.

analyze_logs

Review authentication system logs for issues.

monitor_auth_flows

Real-time monitoring of authentication activity.

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