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# Which Problems Are Solved Introduced with #6909, the authentication check (API client) and the token verification on the introspection endpoint where parallelized to improve performance. Only the first error would be considered and returned (and the second completely ignored). This could lead to situations where both the client authentication and token verification failed and the response would result in a 200 OK with `active: false`. # How the Problems Are Solved - The client authentication check error will always be prioritized. - An error in the token check will no longer terminate the client authentication check. # Additional Changes None. # Additional Context - reported in Discord: https://discord.com/channels/927474939156643850/1242770807105781760
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Are you searching for a user management tool that is quickly set up like Auth0 and open source like Keycloak?
Do you have a project that requires multi-tenant user management with self-service for your customers?
Look no further — ZITADEL is the identity infrastructure, simplified for you.
We provide you with a wide range of out-of-the-box features to accelerate your project, including:
✅ Multi-tenancy with team management
✅ Secure login
✅ Self-service
✅ OpenID Connect
✅ OAuth2.x
✅ SAML2
✅ LDAP
✅ Passkeys / FIDO2
✅ OTP
and an unlimited audit trail is there for you, ready to use.
With ZITADEL, you are assured of a robust and customizable turnkey solution for all your authentication and authorization needs.
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Deploy ZITADEL (Self-Hosted)
Deploying ZITADEL locally takes less than 3 minutes. Go ahead and give it a try!
See all guides here
If you are interested to get professional support for your self-hosted ZITADEL please reach out to us!
Setup ZITADEL Cloud (SaaS)
If you want to experience a hands-free ZITADEL, you should use ZITADEL Cloud.
ZITADEL Cloud comes with a free tier, providing you with all the same features as the open-source version. Learn more about the pay-as-you-go pricing.
Example applications
Clone one of our example applications or deploy them directly to Vercel.
SDKs
Use our SDKs for your favorite language and framework.
Why choose ZITADEL
We built ZITADEL with a complex multi-tenancy architecture in mind and provide the best solution to handle B2B customers and partners. Yet it offers everything you need for a customer identity (CIAM) use case.
- API-first approach
- Multi-tenancy authentication and access management
- Strong audit trail thanks to event sourcing as storage pattern
- Actions to react on events with custom code and extended ZITADEL for you needs
- Branding for a uniform user experience across multiple organizations
- Self-service for end-users, business customers, and administrators
- CockroachDB or a Postgres database as reliable and widespread storage option
Features
Authentication
- Single Sign On (SSO)
- Passkeys support (FIDO2 / WebAuthN)
- Username / Password
- Multifactor authentication with OTP, U2F, Email OTP, SMS OTP
- LDAP
- External enterprise identity providers and social logins
- Device authorization
- OpenID Connect certified => OIDC Endpoints
- SAML 2.0 => SAML Endpoints
- Custom sessions if you need to go beyond OIDC or SAML
- Machine-to-machine with JWT profile, Personal Access Tokens (PAT), and Client Credentials
- Token exchange and impersonation
Multi-Tenancy
- Identity Brokering with templates for popular identity providers
- Customizable onboaring for B2B and their users
- Delegate role management to third-parties
- Domain discovery
Integration
- GRPC and REST APIs for every functionality and resource
- Actions to call any API, send webhooks, adjust workflows, or customize tokens
- Role Based Access Control (RBAC)
- Examples and SDKs
- Audit Log and SOC/SIEM
- User registration and onboarding
- Hosted and custom login user interface
Self-Service
- Self-registration including verification
- Self-service for end-users, business customers, and administrators
- Administration UI (Console)
Deployment
- Postgres (version >= 14) or CockroachDB (version latest stable)
- Zero Downtime Updates
- High scalability
Track upcoming features on our roadmap.
How To Contribute
Find details about how you can contribute in our Contribution Guide
Contributors
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Showcase
Quick Start Guide
Secure a React Application using OpenID Connect Authorization Code with PKCE
Login with Passkeys
Use our login widget to allow easy and secure access to your applications and enjoy all the benefits of Passkeys (FIDO 2 / WebAuthN):
Admin Console
Use Console or our APIs to setup organizations, projects and applications.
Security
You can find our security policy here.
Technical Advisories are published regarding major issues with the ZITADEL platform that could potentially impact security or stability in production environments.
License
here are our exact licensing terms.
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See our license for detailed information governing permissions and limitations on use.