n8n-nodes-security-gate

This is an n8n community node that validates an input value against a secure token stored in credentials. It acts as a logic gate with two outputs: Valid and Invalid.

Features

• Secure Validation: Compare sensitive values (like API keys or secrets) without exposing them in the workflow execution data.
• Dual Outputs: Route your workflow based on whether the validation succeeded or failed.
• Metadata Support: Maintains pairedItem information for proper data lineage.

Installation

Follow the installation guide in the n8n community nodes documentation.

For local development:

npm install
npm run build
npm link

Credentials

Security Token

Store your secret key in the Security Token credential.

• Token: The secret string against which the input will be compared.

Usage

Parameters

• Value to Validate: The expression or string to compare (e.g., {{ $json.headers["x-api-key"] }}).
• Valid Response Override: (Optional) Multiline text or JSON. If provided, this will be returned on Output 0.
• Invalid Response Override: (Optional) Multiline text or JSON. If provided, this will be returned on Output 1.

Outputs

1. Valid (Top): Items that strictly match (===) the credential token. Returns original data or override.
2. Invalid (Bottom): Items that do not match or where an error occurred. Returns original data or override.

License

MIT