Better-Auth

by lexiconalex

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About

Provides tools for setting up, migrating to, and maintaining Better-Auth authentication systems in web applications, with capabilities for project analysis, security testing, and real-time monitoring of authentication processes.

Details

Author: lexiconalex
Repository: LexiconAlex/better-auth-mcp-server
License: GNU Affero General Public License v3.0
Categories: Design, Developer Tools, AI, Project Management, Security
Tags: #web

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below
Plugin Name Better-Auth

Command (node, npx, python, etc.) node
Arguments
- Argument 1 /path/to/better-auth-mcp-server/build/index.js
Environment
- BETTER_AUTH_API_KEY your-api-key
- BETTER_AUTH_PROJECT_ID your-project-id
Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

From the repository

To install Better Auth MCP Server for Claude Desktop automatically via Smithery:

bash
npx -y @smithery/cli install @nahmanmate/better-auth-mcp-server --client claude

To use with Claude Desktop, add the server config: On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json On Windows: %APPDATA%/Claude/claude_desktop_config.json

json
{
"mcpServers": {
"better-auth-mcp-server": {
"command": "node",
"args": ["/path/to/better-auth-mcp-server/build/index.js"],
"disabled": false,
"alwaysAllow": []
}
}
}

typescript
// Initialize Better-Auth in your project
await mcp.useTool('setup_better_auth', {
projectPath: './my-next-app',
config: {
projectId: process.env.BETTER_AUTH_PROJECT_ID,
apiKey: process.env.BETTER_AUTH_API_KEY
}
});

// Test core authentication flows
await mcp.useTool('test_auth_flows', {
flows: ['login', 'register', '2fa']
});
```

`analyze_project`

Analyze project structure for auth setup recommendations.

`setup_better_auth`

Configure auth providers with project ID and API key.

`analyze_current_auth`

Detect existing auth.js/next-auth implementations.

`generate_migration_plan`

Create step-by-step migration path.

`test_auth_flows`

Validate login/register/reset/2fa flows.

`test_security`

Run OWASP-aligned security checks.

`analyze_logs`

Review auth system logs for issues.

`monitor_auth_flows`

Real-time authentication monitoring.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "better-auth": {
            "env": {
                "BETTER_AUTH_API_KEY": "your-api-key",
                "BETTER_AUTH_PROJECT_ID": "your-project-id"
            },
            "args": [
                "/path/to/better-auth-mcp-server/build/index.js"
            ],
            "command": "node"
        }
    }
}

Linux

{
    "env": {
        "BETTER_AUTH_API_KEY": "your-api-key",
        "BETTER_AUTH_PROJECT_ID": "your-project-id"
    },
    "args": [
        "/path/to/better-auth-mcp-server/build/index.js"
    ],
    "command": "node"
}

Macos

{
    "env": {
        "BETTER_AUTH_API_KEY": "your-api-key",
        "BETTER_AUTH_PROJECT_ID": "your-project-id"
    },
    "args": [
        "/path/to/better-auth-mcp-server/build/index.js"
    ],
    "command": "node"
}

Windows

{
    "env": {
        "BETTER_AUTH_API_KEY": "your-api-key",
        "BETTER_AUTH_PROJECT_ID": "your-project-id"
    },
    "args": [
        "/path/to/better-auth-mcp-server/build/index.js"
    ],
    "command": "node"
}

better-auth-mcp-server MCP Server

MCP Server for Authentication Management

Enterprise-grade authentication solution providing:

- 🔐 Secure credential management with AES-256 encryption
- ⚙️ Multi-protocol auth (OAuth2, SAML, LDAP)
- 🛡️ Real-time threat detection and prevention

Features

Core Tools

- analyze_project - Analyze project structure for auth setup recommendations - setup_better_auth - Configure auth providers with project ID and API key - analyze_current_auth - Detect existing auth.js/next-auth implementations - generate_migration_plan - Create step-by-step migration path

Testing & Security

- test_auth_flows - Validate login/register/reset/2fa flows - test_security - Run OWASP-aligned security checks - analyze_logs - Review auth system logs for issues - monitor_auth_flows - Real-time authentication monitoring

Available Resources

- better-auth://config - Current Better-Auth configuration settings - better-auth://logs - Authentication system logs

Development

Clone and install:

git clone https://github.com/better-auth-mcp-server/better-auth-mcp-server.git

cd better-auth-mcp-server

npm install

Build the server:

npm run build

For development with auto-rebuild:

npm run watch

Configuration

Environment Variables

```ini

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Details

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Setting up with Highlight

From the repository

analyze_project

setup_better_auth

analyze_current_auth

generate_migration_plan

test_auth_flows

test_security

analyze_logs

monitor_auth_flows

Claude Desktop / Cursor

Linux

Macos

Windows

better-auth-mcp-server MCP Server

Features

Core Tools

Testing & Security

Available Resources

Development

Configuration

Environment Variables

Install

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Context 7

1Panel

`analyze_project`

`setup_better_auth`

`analyze_current_auth`

`generate_migration_plan`

`test_auth_flows`

`test_security`

`analyze_logs`

`monitor_auth_flows`