Supabase has become the go-to open-source Firebase alternative for modern application teams, offering real-time databases, authentication, and serverless functions without vendor lock-in. Yet as organizations grow, so do their security requirements—especially around single sign-on (SSO). Whether your team uses Azure AD, Okta, Google Workspace, or another identity provider, integrating enterprise SSO into a Supabase app shouldn’t mean sacrificing developer experience or scalability.

That’s where MisarIO comes in. We built our platform to bridge the gap between developer-friendly tools like Supabase and the enterprise-grade security demanded by IT teams. In this guide, we’ll walk you through adding enterprise SSO to your Supabase app step by step—from configuring your identity provider to securing your authentication flow and managing user provisioning at scale.

By the end, you’ll have a production-ready SSO setup that works seamlessly with Supabase Auth while giving your security team the control they need.

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Why Enterprise SSO Matters for Supabase Apps

Most early-stage Supabase projects start with simple email/password or OAuth logins—perfect for simplicity and rapid iteration. But as your user base grows and compliance requirements tighten, relying on basic authentication becomes risky. Enterprise SSO solves several critical challenges:

• Centralized Identity Management: One dashboard for all users across applications, reducing IT overhead and eliminating password fatigue.
• Enhanced Security: Multi-factor authentication (MFA), conditional access policies, and immediate revocation of access when employees leave.
• Audit & Compliance: Detailed logs of user activity, critical for SOC 2, HIPAA, or GDPR audits.
• Seamless User Experience: No more “forgot password” flows—users sign in once and access all integrated apps.

Supabase Auth supports SAML, OIDC, and enterprise OAuth providers out of the box, but integrating them securely and at scale requires careful planning. MisarIO simplifies this process by handling federation, attribute mapping, and user provisioning automatically—so you can focus on building features, not wrestling with identity protocols.

For teams already using Supabase for auth, SSO integration should feel like a natural extension, not a rewrite. Let’s break it down.

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Step 1: Choose Your Identity Provider and Set Up SSO

Before touching your Supabase app, you need a source of truth for user identities. Whether it’s Azure AD, Okta, Google Workspace, Ping Identity, or another SAML/OIDC provider, the setup process follows a predictable pattern.

Common Enterprise SSO Providers (and Why They Work Well with Supabase)

| Provider | Protocol | Key Benefits |

|----------------|---------|-----------------------------------------------|

| Azure AD | SAML | Deep Microsoft ecosystem integration |

| Okta | OIDC/SAML | Rich policy engine and user lifecycle control |

| Google Workspace | OIDC | Built-in MFA, user groups, and audit trails |

| Ping Identity | SAML/OIDC | Highly customizable and enterprise-focused |

Create an App Registration in Your Identity Provider

Here’s how to set up SSO in Okta, for example:

• Log in to your Okta admin console.
• Go to Applications → Applications → Create App Integration.
• Choose SAML 2.0 or OIDC (depending on your preference).
• Enter your app name (e.g., “My Supabase App”) and click Next.
• In the SAML Settings section, configure:

- Single sign-on URL: https://.supabase.co/auth/v1/callback

- Audience URI (Entity ID): urn::supabase

- Default RelayState: (optional, used for deep linking)

- Name ID format: urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress

- Attribute Statements:

- email → ${user.email}

- firstName → ${user.firstName}

- lastName → ${user.lastName}

🔐 Tip: Always use HTTPS endpoints. Never expose your callback URL over HTTP in production.

For Azure AD, the setup is similar but uses App Registrations in Azure Portal. The key fields remain the same: identifier (Entity ID), reply URL (callback), and user attributes.

Once configured, your identity provider will provide a metadata XML file or OIDC endpoints (issuer, client ID, client secret). Save these—they’ll be used in the next step.

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Step 2: Configure Supabase Auth for Enterprise SSO

Supabase Auth supports multiple SSO providers through SAML or OIDC. The setup is declarative and managed via the Supabase Dashboard or API.

Option A: Using the Supabase Dashboard (Recommended for Teams)

• Log in to [supabase.com/dashboard](https://supabase.com/dashboard).
• Select your project → Authentication → Providers.
• Scroll to SAML 2.0 or OpenID Connect.
• Click Add Provider.
• Fill in the fields using the metadata from your identity provider:

``yaml

SAML Example

Provider ID: okta

Metadata URL: (paste Okta metadata XML URL)

Entity ID: urn::supabase

Attribute Mappings:

email: email

email_verified: email_verified

name: name

first_name: first_name

last_name: last_name

`

For OIDC:

`yaml

Provider ID: google-workspace

Issuer URL: https://accounts.google.com

Client ID:

Client Secret:

Attribute Mappings:

email: email

email_verified: email_verified

name: name

`

✅ Pro Tip: Use consistent attribute names across providers to avoid downstream mapping issues in your app.

Option B: Using the Supabase API (For Automation)

You can automate SSO setup using the auth.admin.createProvider method via the Supabase JS client:

`js

import { createClient } from '@supabase/supabase-js'

const supabaseAdmin = createClient(

process.env.SUPABASE_URL,

process.env.SUPABASE_SERVICE_ROLE_KEY

)

const { data, error } = await supabaseAdmin.auth.admin.createProvider({

id: 'okta',

name: 'Okta SSO',

type: 'saml',

metadata_url: 'https://your-okta-domain.okta.com/app/.../sso/saml/metadata',

attribute_mapping: {

email: 'email',

email_verified: 'email_verified',

name: 'name',

first_name: 'first_name',

last_name: 'last_name'

}

})

`

This is ideal for teams using Infrastructure-as-Code (e.g., Terraform) to manage Supabase configurations.

⚠️ Important: Always test SSO in a staging environment first. Misconfigured SAML can break login flows entirely.

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Step 3: Map Users, Roles, and Permissions Securely

SSO authenticates users, but authorization is a separate concern. How do you ensure users have the right permissions in your app?

User Provisioning Strategies

| Strategy | Pros | Cons | Best For |

|--------|------|------|---------|

| Just-in-Time (JIT) Provisioning | No upfront setup, scales automatically | Limited role/attribute assignment | Rapid prototyping |

| SCIM (System for Cross-domain Identity Management) | Real-time user sync, deprovisioning | Requires SCIM endpoint support | Large enterprises |

| Manual Sync via CSV/Script | Full control over mapping | Not scalable, error-prone | Small teams, legacy migrations |

For most teams, JIT + role mapping via JWT claims is the sweet spot.

Leverage JWT Claims in Your App

When a user signs in via SSO, Supabase injects user metadata into the JWT. You can map identity provider attributes to app roles:

`sql

-- Example: Create a function to set user roles based on email domain

CREATE OR REPLACE FUNCTION set_user_role()

RETURNS TRIGGER AS $$

BEGIN

IF NEW.email LIKE '%@yourcompany.com' THEN

NEW.raw_user_meta_data := jsonb_set(

COALESCE(NEW.raw_user_meta_data, '{}'::jsonb),

'{role}',

'"admin"'

);

END IF;

RETURN NEW;

END;

$$ LANGUAGE plpgsql SECURITY DEFINER;

`

Then, apply the trigger to your auth.users table.

🔄 Tip: Use raw_user_meta_data to store provider-specific fields (e.g., groups, department) without polluting your app schema.

Enforce Role-Based Access in RLS

With Row Level Security (RLS), restrict data access based on user roles:

`sql

CREATE POLICY "Allow Admins to View All" ON your_table

FOR SELECT

USING (current_setting('request.jwt.claims')::jsonb->>'role' = 'admin');

CREATE POLICY "Allow Staff to View Own Data" ON your_table

FOR SELECT

USING (auth.uid() = user_id);

`

This keeps your data secure without writing application logic.

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Step 4: Automate User Lifecycle with MisarIO (Optional but Recommended)

While Supabase handles authentication brilliantly, enterprise teams often need:

• Real-time deprovisioning when users leave
• Automated role updates based on group membership
• Audit trails for compliance

That’s where MisarIO shines. We act as a lightweight identity bridge between your identity provider and Supabase (and other apps), enabling:

Key Features of MisarIO for Supabase SSO

• SCIM 2.0 Integration: Sync users, groups, and roles from Azure AD or Okta in real time.
• Attribute Mapping Engine: Normalize department, manager, or custom fields across systems.
• Audit & Compliance Reports: Track every user action, login attempt, and role change.
• Automated Onboarding/Offboarding: Trigger workflows when users join or leave groups.
• Multi-App SSO: Extend SSO to your entire stack (Notion, Slack, internal tools) using the same identity source.

How to Connect MisarIO to Your Supabase App

• Sign up at [misar.io](https://misar.io) and create a workspace.
• Add your identity provider (e.g., Okta) and configure SCIM.
• Connect your Supabase project via OAuth or API key.
• Define attribute mappings (e.g., okta.department → user_metadata.department`).
• Enable JIT Provisioning or SCIM Sync.
• Deploy identity policies (e.g., “if user.email contains @engineering, set role=engineer”).

🔗 Use MisarIO’s pre-built connectors for Okta, Azure AD, and Google Workspace to reduce setup time by 70%.

With MisarIO, your SSO setup becomes self-healing—users who leave the company are automatically deprovisioned across all connected apps, including Supabase.

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Step 5: Test, Monitor, and Scale Your SSO Setup

A secure SSO deployment is never “done.” You need visibility into login attempts, failed authentications, and user behavior.

Testing Your SSO Flow