Logto Open Source Authentication and Authorization Infrastructure
Logto is a modern, open-source authentication and authorization infrastructure built on OIDC and OAuth 2.1. It provides multi-tenancy, enterprise SSO, RBAC, and SDKs for 30+ frameworks, making it the go-to Auth0/Cognito alternative for SaaS and AI applications.
npx skills add agentskillexchange/skills --skill logto-open-source-auth-infrastructure
Logto is an open-source authentication and authorization platform designed for modern SaaS, AI, and agent-based applications. Built on OIDC (OpenID Connect) and OAuth 2.1 standards, Logto eliminates the complexity of implementing secure authentication from scratch while giving developers full control over their identity infrastructure.
What this skill actually does
Core Capabilities
Logto provides a comprehensive auth stack that includes passwordless login, social login (Google, Facebook, GitHub, and dozens more), email/password authentication, multi-factor authentication (MFA with TOTP), and enterprise SSO via SAML. Its multi-tenancy support with organization-level RBAC makes it particularly well-suited for B2B SaaS products that need tenant isolation and fine-grained access control.
Developer Experience
The platform ships with pre-built, customizable sign-in UI components and official SDKs for over 30 frameworks including React, Next.js, Angular, Vue, Flutter, Go, Python, Express, and more. Integration typically takes minutes rather than days. The Admin Console provides a visual management interface for users, applications, connectors, and roles.
Agent and AI Integration
Logto has first-class support for Model Context Protocol (MCP) and agent-based architectures. AI agents can authenticate via machine-to-machine (M2M) tokens, making Logto a natural fit for agentic workflows that need secure API access. The Management API allows programmatic control over all identity resources.
Deployment Options
Logto can be self-hosted via Docker Compose or Node.js with PostgreSQL, or used as a fully managed cloud service at cloud.logto.io. The open-source edition (MPL-2.0 license) includes all core auth features with no user limits. Cloud adds managed infrastructure and premium connectors.
Integration Points
Developers can extend Logto with custom social connectors, webhooks for event-driven workflows, and the comprehensive REST Management API. The platform supports SPAs, traditional web apps, mobile apps, CLI tools, and microservice-to-microservice authentication.