Dynamic Auth Proxy for Multi-Tenant Automations

This is a classic 'platform gap' opportunity. The user evidence shows a high-pain scalability blocker in a popular tool (n8n). Users are currently resorting to 'Switch node hell' (unmaintainable) or manual HTTP requests (losing the benefits of the platform). A solo developer can bridge this gap with a specialized auth-proxy service.

In platforms like n8n and Make, credentials (like a Google OAuth token) are usually selected from a hardcoded dropdown when you build the workflow. If you have 100 clients, you can't easily say 'run this one workflow but use the credential belonging to Client X'. This forces users to either duplicate the workflow 100 times or build a complex manual auth system inside the workflow using the generic HTTP node.

• Automation Agencies: Managing different client accounts for the same service.
• SaaS Builders: Using n8n/Make as their backend 'logic' engine to handle user integrations.
• Enterprise IT: Managing departmental credentials in a centralized hub.

Multiple users on the n8n community forums have specifically identified this as a 'major scalability issue'. One user mentioned having to create 'hundreds of duplicate nodes', which is functionally unmaintainable. Another user suggested a 'clean workaround' using HTTP Request nodes, which confirms that users are already looking for third-party ways to handle the auth logic externally.

Build a 'Credential Vault & Proxy'.

1. User logs into your SaaS and connects their client API keys/OAuth accounts (or provides a way to fetch them via API).
2. Your SaaS provides a proxy URL: https://proxy.com/execute?key_id=123&target=https://api.google.com/....
3. Your SaaS receives the request, injects the correct Bearer token for Key #123, and sends it to Google.
4. The user only needs one HTTP node in their automation tool that dynamically passes the key_id as a variable.

This is a 'utility' spend that solves a technical bottleneck. For an agency, the choice is between paying $20/mo or spending 20 hours a month manually updating 500 workflow nodes every time a client changes a password or a flow needs an update. The ROI is immediate.

Low to Medium. The core tech is a secure encrypted database for keys and a proxy server. The hardest part is implementing the OAuth flow for various services (Google, Microsoft, etc.) so that the SaaS can refresh tokens on behalf of the user.

There is a clear path to 100 subscribers. The n8n and Make communities have thousands of active power users. If only 1% of the n8n user base is an agency or a SaaS builder, that represents a market of several thousand entities. $20/mo is a low-friction entry point for a B2B tool.

• Platform Fix: If n8n or Make adds 'Expression Support' to credential fields, this tool becomes redundant for those specific nodes. However, a third-party proxy would still be useful for cross-platform workflows (e.g., using a credential stored in your vault across both n8n and a custom script).