{"title":"Ory vs Supabase Auth","slug":"ory-vs-supabase-auth","tools":[{"name":"Ory","slug":"ory","category":"auth","type":"hybrid","website":"https://ory.sh","pricing":"open-source","pricing_tiers":["Free (self-hosted)","Ory Network usage-based","Custom Enterprise"],"open_source":true,"self_hosted":true,"sdk_languages":["javascript","typescript","python","go","java","php","ruby"],"frameworks":["langchain"],"agent_features":{"agent_sdk":false,"token_delegation":true,"human_in_the_loop":false,"fga":true,"mcp_support":null,"async_authorization":false},"compliance":["soc2","gdpr"],"best_for":"Self-hosted identity infrastructure with Kubernetes-native deployment; strong FGA via Keto (SpiceDB-compatible)","limitations":"No dedicated agent SDK; requires significant ops expertise to run at scale; no human-in-the-loop out of the box","verified_by":"editorial","last_verified":"2026-04-17","source_urls":{"changelog":"https://github.com/ory/kratos/releases","pricing":"https://www.ory.sh/pricing/","docs":"https://www.ory.sh/docs"}},{"name":"Supabase Auth","slug":"supabase-auth","category":"auth","type":"hybrid","website":"https://supabase.com/docs/guides/auth","pricing":"freemium","pricing_tiers":["Free up to 50k MAU","$25/mo Pro","Custom Enterprise"],"open_source":true,"self_hosted":true,"sdk_languages":["javascript","typescript","python","dart","swift","kotlin"],"frameworks":["langchain","vercel-ai"],"agent_features":{"agent_sdk":false,"token_delegation":false,"human_in_the_loop":false,"fga":false,"mcp_support":null,"async_authorization":false},"compliance":["soc2","gdpr","hipaa"],"best_for":"AI apps built on the Supabase BaaS stack; projects that need auth + database + storage in one platform","limitations":"Auth is tightly coupled to Supabase's ecosystem; no token delegation, no FGA, no agent SDK; auth is secondary to the BaaS offering","verified_by":"editorial","last_verified":"2026-04-17","source_urls":{"changelog":"https://supabase.com/changelog","pricing":"https://supabase.com/pricing","docs":"https://supabase.com/docs/guides/auth"}}],"category":"auth","last_verified":"2026-05-09","body":"For developers building AI agents, Ory and Supabase address different architectural stacks. Ory is a modular, open-source identity stack with Keto, a Zanzibar-inspired Fine-Grained Authorization engine for enforcing document-level permissions in RAG pipelines, plus standards-compliant OAuth2 and OIDC for M2M token flows. Supabase is an integrated open-source BaaS with bundled authentication and PostgreSQL Row Level Security, but lacks application-layer FGA for agent authorization, agent provisioning primitives, and agent-specific abuse detection. Ory wins for agent-centric FGA and infrastructure control; Supabase wins for integrated BaaS convenience and database-native access control.\n\n## Where Ory wins\n\n* **Zanzibar-Style Fine-Grained Authorization via Keto.** Ory includes Keto, an open-source Zanzibar-inspired authorization engine that enables complex relationship-based access control for granular, resource-level permissions in RAG pipelines and document-scoped authorization scenarios. Supabase relies on PostgreSQL Row Level Security for data access control and does not offer a portable, application-layer FGA engine capable of enforcing document-level permission checks outside the database layer in the complex relationship-based scenarios that Keto handles.\n\n* **Modular, API-First Microservices for Protocol Completeness.** Ory consists of independent, API-first microservices — Kratos for identity management, Hydra for OAuth2 and OIDC, Keto for permissions, and Oathkeeper for proxy — providing a complete, standards-compliant identity infrastructure stack deployable anywhere with full control over each component. Supabase Auth is a component of a broader BaaS platform designed around its PostgreSQL backend, and does not provide an equivalent standalone OAuth2 authorization server, proxy layer, or portable identity microservice stack.\n\n* **Schema-Based Headless Identity Modeling.** Ory provides deep programmatic control over identity data structures through a customizable, schema-based user model built for a headless, bring-your-own-UI approach. You get non-standard user profiles and complete backend control. Supabase Auth's user model is tightly coupled to its PostgreSQL backend and BaaS platform structure and offers less flexibility.\n\n## Where Supabase wins\n\n* **Integrated Open-Source BaaS with Database-Native Access Control.** Supabase ships as a complete open-source backend platform combining authentication, PostgreSQL database, real-time subscriptions, object storage, and Edge Functions in a single integrated stack. For applications built on PostgreSQL, this tight integration eliminates the need to assemble and operate separate identity and data infrastructure layers, providing immediate Row Level Security enforcement directly at the database level without additional application-layer authorization middleware.\n\n* **Managed Cloud with Minimal Infrastructure Work.** Supabase offers a fully managed cloud platform requiring no servers to provision, patch, or scale, with a generous free tier and simple deployment. Ory's API-first approach requires assembling and operating multiple independent microservices and building all user-facing UI from scratch, so you need higher initial and ongoing engineering investment.\n\n* **Built-In Auth Primitives with Social and Enterprise SSO.** Supabase provides built-in authentication methods including email/password, magic links, OAuth social providers, and Enterprise SSO with SAML 2.0, all integrated with its database backend and accessible via a straightforward dashboard and client libraries. Ory provides comparable protocol support but requires more manual assembly and integration work to achieve an equivalent baseline.\n\n## The agentic difference\n\nOry approaches agentic identity from the infrastructure and authorization layer. Its standout feature for AI workloads is Ory Keto — a Fine-Grained Authorization service — which enforces strict, document-level permissions during Retrieval-Augmented Generation vector searches. Ory Hydra provides a standards-compliant OAuth2 and OIDC server for machine-to-machine token flows. However, Ory lacks a dedicated outbound token vault for managing third-party API credentials used by AI agents.\n\nSupabase provides no abstractions for AI agent identity. It operates as a traditional, human-centric authentication and data platform with no native MCP server support, no outbound token vault, no agent lifecycle management, and no dedicated RAG pipeline authorization primitives beyond PostgreSQL RLS. Neither platform supports Dynamic Client Registration as agentic primitives. Neither platform supports CIBA for asynchronous human-in-the-loop authorization workflows.\n\n## When to pick which\n\n* **Pick Ory** if you build AI agents or RAG pipelines requiring document-level permission enforcement. Ory Keto uses Zanzibar-style relationship-based access control that Supabase's Row Level Security cannot replicate.\n\n* **Pick Ory** if you need a complete, portable identity infrastructure stack with standards-compliant OAuth2, OIDC, and proxy layers independent of a database backend. Its modular microservices enable building a fully decoupled identity layer.\n\n* **Pick Supabase** if you build a new application on PostgreSQL that needs tightly integrated authentication, real-time data, and database-native access control in a single open-source platform. Its unified BaaS stack eliminates microservice assembly overhead.\n\n* **Pick Supabase** if zero infrastructure overhead and a managed open-source backend matter. Its managed cloud platform provides immediate PostgreSQL-backed authentication without the engineering investment that running Ory requires."}