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# Solving Multi-User OAuth in n8n: A Complete Guide to Dynamic Credentials n8n
- When handling different users' credentials dynamically in n8n, three battle-tested solutions are provided.
- The Multi-User OAuth Problem arises due to n8n credentials being static and workflow-scoped.
- Key requirements include user-specific OAuth flows, secure token storage, automatic token refresh, n8n integration, and multi-provider support.
- The architecture involves an external OAuth service, n8n HTTP requests, and token API with secure storage.
- Solution 1 involves using Firebase Auth and Firestore with Cloud Functions for OAuth and n8n API for credential fetching.
- Firebase Pros include fast setup and GCP integration, while Cons are vendor lock-in and limited customization.
- Solution 2 suggests Auth0 with custom backend for enterprise-grade security and compliance, with higher cost and complexity.
- Solution 3 proposes Supabase, combining simplicity of Firebase and power of PostgreSQL, ideal for modern, self-hosted projects.
- Choosing the right solution depends on existing infrastructure, security needs, and budget considerations.
- Implementation tips include starting simple, prioritizing security, handling edge cases, and setting up monitoring.
- By building a dedicated OAuth service, scalable and secure automation platforms can be created for multi-user scenarios in n8n.
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