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 clientid and clientsecret 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 clientid and clientsecret. 2. Validator (Code node) checks: - Body contains only clientid and clientsecret. - Rejects missing or extra fields. 3. Airtable search: - Looks up the clientid. - Rejects if not found. 4. Secret validation (If node): - Compares provided clientsecret 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 { accesstoken, expiresin, tokentype } 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