FGA that’s ready for the AI age
Better secure your apps, RAG systems, MCP servers, and AI agents with Auth0 Fine-Grained Authorization (FGA) built on an enterprise-grade identity platform.
Authorization that scales with your complexity
The problem
In-house, custom auth logic can’t scale with the rapidly-evolving AI landscape, especially when securing multi-tenant B2B APIs for autonomous agents and MCP clients. These complex authorization needs create massive attack surfaces.
The solution
Auth0 FGA provides a unified, relationship-based platform that helps secure multi-tenant B2B APIs and apps, and decouples complex authorization logic from your code. It enforces strict data isolation and least-privilege access for humans, agents, and MCP clients across billions of resources with enterprise-grade reliability.
Get Started with Auth0 FGABetter secure the AI future
More secure APIs are essential before exposing them to autonomous AI systems and agents. Auth0 FGA helps enforce least-privilege access, helping ensure agents access only data authorized to them, and mitigating risks like prompt injection and data leakage.
Explore Auth0 for AI AgentsSpeed up innovation and time to market
Stop writing tedious, custom authorization logic for collaborative features like sharing and multi-level roles. Auth0 FGA replaces this with delegation and on-behalf-of flows, allowing you to safely expose secure APIs to third-party applications like AI agents.
Read the blogScale seamlessly
Auth0 FGA provides a Tier-Zero Reliability (99.99% availability SLA*) and low latency. It enables a true Zero Trust architecture by enforcing context-aware access for every request to millions of users and billions of resources. Auth0 FGA centralizes all permission checks, providing a single, immutable audit trail required for compliance with regulations like GDPR and HIPAA.
*Based on 12-month availability, as indicated on trust.okta.com.
Read the blog
Built for AI and the latest use cases
Better secure APIs for enterprise AI and RAG
Help ensure your AI agents access only authorized documents and information. Mitigate prompt injection and non-deterministic agent actions that unsecured APIs cannot prevent, while controlling agent-resource interaction at the MCP layer to better secure your APIs for advanced AI patterns.
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Help support compliance
Keep a log of who changed permissions and when, as well as who accessed specific resources, providing a single, immutable audit trail required to prove to auditors the actions taken by users and AI agents (GDPR, HIPAA).
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Auth0 FGA leverages the identity platform you already trust
Automatic synchronization
Coming soon: Stream organization and role data from Auth0 directly to Auth0 FGA.
Developer-first
Auth0 FGA is built for developers, with top-notch IDE integrations, CLI, SDKs, and management interfaces.
Open standard
Auth0 FGA is built on OpenFGA, a CNCF incubation project, that helps ensure you aren't locked into a proprietary black box.
Trusted by developers
“Auth0 FGA has fundamentally transformed our ability to manage workspaces. Before, relationship-based access control across multiple workspaces was simply not feasible. With Auth0 FGA, we can instantly set up new workspaces with complex, fine-grained authorization structures. This leap in functionality allows us to meet our enterprise clients’ granular access control needs in ways we couldn't have imagined before.”
Bryce Easley
Senior Director of Engineering
“Auth0 FGA allows us to offload the complexity of building and maintaining a permissions system so our teams can focus on what matters most: delivering features for our customers. It unified sharing across our product suite and established a foundation that lets teams ship collaboration features faster without reinventing access control.”
Jason Poole
Director of Engineering
Built on OpenFGA
Join us and others to build a foundation that secures authorization for the world. Designed and maintained by Auth0 and now owned by Cloud Native Computing Foundation, OpenFGA sits at the heart of our FGA service.
FAQ
Foire aux questions (FAQ)
En quoi consiste Auth0 Fine-Grained Authorization (FGA)_?
Auth0 Fine-Grained Authorization (FGA) est un service de contrôle des accès basé sur les relations (ReBAC) qui permet aux développeurs de modéliser des autorisations complexes à grande échelle. Inspiré par Zanzibar de Google, FGA dissocie la logique d’autorisation du code applicatif, favorisant des décisions d’accès précises et en temps réel pour des millions d’utilisateurs et des milliards de ressources sur les plateformes SaaS B2B et pilotées par l’IA.
Comment Auth0 FGA sécurise-t-il les agents d’IA_?
Auth0 FGA permet de sécuriser les agents d’IA en imposant le principe du moindre privilège au niveau des ressources. En modélisant les relations entre les utilisateurs, les agents et les données, FGA permet de s’assurer que les agents d’IA n’ont accès qu’aux documents ou outils spécifiques autorisés pour la session en cours, ce qui permet de limiter les risques tels que l’injection d’invites et la fuite de données non autorisées dans les pipelines RAG.
Auth0 FGA est-il basé sur OpenFGA_?
Oui, Auth0 FGA a été développé à partir d’OpenFGA, un projet open source de la Cloud Native Computing Foundation (CNCF). En s’appuyant sur un standard ouvert, Auth0 évite que les développeurs ne soient enfermés dans un système propriétaire, tout en leur permettant de tirer parti d’un modèle d’autorisation basé sur la communauté, qui est à la fois très flexible et éprouvé pour sa fiabilité de niveau entreprise.
Puis-je utiliser FGA pour une configuration B2B multitenant_?
Absolument. Auth0 FGA est idéal pour les applications SaaS B2B qui requièrent des rôles complexes et multiniveaux, ainsi que le partage de ressources entre organisations. Cette solution permet de modéliser des hiérarchies complexes — notamment du type «Responsable de département» ou «Éditeur du document» — et de centraliser tous les contrôles d’autorisation dans un service performant, adapté aux entreprises clientes les plus exigeantes.
Quelles sont les limites de performance d’Auth0 FGA_?
Auth0_FGA est conçu pour une fiabilité de niveau zéro et des temps de réponse à faible latence, même à grande échelle. La solution peut gérer des milliards de tuples d’autorisation et des millions de demandes par seconde, ce qui permet d’éviter que les contrôles d’autorisation ne deviennent des goulets d’étranglement pour les performances de votre application, quelle que soit la complexité de votre modèle d’autorisation.
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