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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.

“Allowed” code snippet with “Document user access” UI

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.

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Better 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.

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Speed 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.

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Scale 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.

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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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User interacting with an AI agent and FGA flow

Enable API authorization for any resource or identity

Manage all access (users and agent identities) to any resource type using fine-grained, dynamic policies. Implement advanced policies for delegation, time limits, transaction controls, and entitlements, providing the flexibility and expressiveness modern authorization demands.

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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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Logs UI

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.

Perguntas frequentes

Perguntas frequentes

O que é o Auth0 Fine-Grained Authorization (FGA)?

O Auth0 Fine-Grained Authorization (FGA) é um serviço de controle de acesso baseado em relacionamento (ReBAC) que permite que os desenvolvedores modelem permissões complexas em grande escala. Inspirado no Zanzibar do Google, o FGA separa a lógica de autorização do código do aplicativo, possibilitando decisões de acesso precisas e em tempo real para milhões de usuários e bilhões de recursos em plataformas SaaS B2B e baseadas em IA.

Como o Auth0 FGA protege os agentes de IA?

O Auth0 FGA ajuda a proteger agentes de IA porque aplica o princípio do menor privilégio no nível do recurso. Modelando as relações entre usuários, agentes e dados, o FGA ajuda a garantir que um agente de IA possa acessar apenas os documentos ou ferramentas específicos autorizados para aquela sessão, mitigando riscos como injeção de prompts e vazamento de dados não autorizados em pipelines RAG.

O Auth0 FGA é baseado no OpenFGA?

Sim, o Auth0 FGA é baseado no OpenFGA, um projeto de código aberto dentro da Cloud Native Computing Foundation (CNCF). Utilizando um padrão aberto, a Auth0 garante que os desenvolvedores não fiquem presos a um sistema proprietário e possam aproveitar um modelo de autorização orientado pela comunidade, que é altamente flexível e testado em situações reais, garantindo confiabilidade em nível corporativo.

Posso usar o FGA para multilocação B2B?

Com certeza. O Auth0 FGA é ideal para aplicativos de SaaS B2B que exigem funções complexas e de vários níveis, além do compartilhamento de recursos entre organizações. Ele permite modelar hierarquias complexas, como "Gerente de Departamento" ou "Editor de Documento", e centralizar todas as verificações de permissão em um serviço de alto desempenho que se adapta às necessidades dos clientes corporativos mais exigentes.

Quais são os limites de desempenho do Auth0 FGA?

O Auth0 FGA foi criado para oferecer confiabilidade de "nível zero" e tempos de resposta de baixa latência, mesmo em grande escala. Ele consegue lidar com bilhões de tuplas de autorização e milhões de solicitações por segundo, ajudando a garantir que as verificações de permissão não se tornem um gargalo para o desempenho do seu aplicativo, independentemente da complexidade do modelo de autorização.

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