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
- Webhook node receives
client_id
and client_secret
.
- Validator (Code node) checks:
- Body contains only
client_id
and client_secret
.
- Rejects missing or extra fields.
- Airtable search:
- Looks up the
client_id
.
- Rejects if not found.
- Secret validation (If node):
- Compares provided
client_secret
with stored value.
- Rejects if incorrect.
- Token generation (Code node):
- Generates a 128-character secure token.
- Airtable create:
- Stores token, client ID, creation date, and type.
- 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