Best Authentication Software for Model Context Protocol (MCP)

Better Auth is a versatile authentication and authorization solution tailored for TypeScript, enabling developers to seamlessly integrate secure login functionalities into their applications and databases. It comes equipped with a comprehensive suite of authentication tools right from the start, offering features such as email and password login, session management, email verification, password resets, and compatibility with over 40 social login options like Google and GitHub, all requiring minimal coding effort. Designed to be compatible with a broad spectrum of contemporary frameworks, including Next.js, Nuxt, SvelteKit, Astro, and Express, it empowers teams to implement authentication irrespective of their chosen technology stack while ensuring robust TypeScript support and type safety. Furthermore, Better Auth boasts sophisticated features such as multi-factor authentication, management of multi-tenant organizations, and enterprise-level functionalities including SSO, SAML, and SCIM provisioning, making it an ideal fit for both straightforward applications and complex, large-scale systems. This flexibility allows developers to focus on building their core application features while relying on Better Auth to handle security concerns efficiently.

Scalekit is an authentication and integration platform designed specifically for AI agents that need to securely connect with SaaS applications, APIs, MCP servers, databases, and internal systems. The platform enables agents to act on behalf of individual users instead of using shared service accounts, ensuring every action follows the user's identity, permissions, and approved access scopes. Scalekit manages delegated OAuth authentication, secure credential vaulting, token lifecycle management, authorization checks, and API communication without requiring developers to build that infrastructure themselves. Developers can connect to more than 100 prebuilt integrations or create custom connectors for proprietary services and internal APIs. Built-in handling for pagination, retries, rate limiting, and error management simplifies tool execution while improving application reliability. Every request is logged with a complete delegation chain that records the user, agent, connector, permissions, and resulting actions for auditing and compliance. The platform supports encrypted credential storage, regional deployments, private cloud options, SIEM integrations, and enterprise-grade security controls. Scalekit also extends beyond AI agents by providing SaaS authentication capabilities such as SSO, SCIM provisioning, RBAC, passwordless authentication, and user management. By combining delegated identity, secure authentication, and production-ready connector infrastructure, Scalekit enables organizations to build trustworthy AI agents without the complexity of managing authentication themselves.