OAuth token management system with Airtable storage

This workflow contains community nodes that are only compatible with the self-hosted version of n8n.

OAuth Token Generator and Validator

This n8n template helps you generate, validate, and store tokens for your customers securely using:

• n8n as your backend automation engine
• Airtable as your lightweight client and token store

🚀 What It Does

• Accepts client_id and client_secret via POST webhook.
• Validates client credentials against Airtable.
• Generates a long token on success.
• Stores the generated token in Airtable with metadata.
• Responds with a JSON containing the token, expiry, and type.
• Returns clear error messages if validation fails.

How It Works

1. Webhook node receives client_id and client_secret.
2. Validator (Code node) checks:
   • Body contains only client_id and client_secret.
   • Rejects missing or extra fields.
3. Airtable search:
   • Looks up the client_id.
   • Rejects if not found.
4. Secret validation (If node):
   • Compares provided client_secret with stored value.
   • Rejects if incorrect.
5. Token generation (Code node):
   • Generates a 128-character secure token.
6. Airtable create:
   • Stores token, client ID, creation date, and type.
7. Webhook response:
   • Returns JSON { access_token, expires_in, token_type } on success.
   • Returns appropriate JSON error messages on failure.

Related Workflow

You can also use it with the published Bearer Token Validation workflow:

👉 Validate API Requests with Bearer Token Authentication and Airtable

to securely validate tokens you generate with this workflow across your protected endpoints.

Why Use This

• Provides OAuth-like flows without a complex backend.
• Uses n8n + Airtable for client management and token storage.
• Clean, modular, and ready for your SaaS or internal API automations.
• Extendable for token expiry, refresh, and rotation handling.

Enjoy building secure token-based APIs using n8n + Airtable! 🚀

Built by:

Nazmy