Global Variable n8n Node

Install n8n-nodes-global-variable

Requires self-hosted n8n

How it works

1. Create a Global Variable credential

Note: you can have as many of these as you want to organize your variables.

If you add a Global Variable node to your workflow first, you'll get an opportunity to easily create a credential:

2. Define your variables as JSON

Simply define all your variables in a single JSON field. You can include any type of data - strings, numbers, booleans, objects, arrays, etc.

Example variables JSON:

{
  "apiUrl": "https://api.example.com",
  "retryCount": 3,
  "enableLogging": true,
  "config": {
    "timeout": 5000,
    "headers": {
      "Content-Type": "application/json"
    }
  },
  "supportedFormats": ["json", "xml", "csv"]
}

3. Add a Global Variable node in your workflow

Choose the credential you created in step 1.

That's it!

Wherever the node is used, your variables will be available in the workflow after the node is executed in $json.

$json.vars.X

If you choose Put All Variables in One Key in the node options, all variables will be available under the $json.<the name you chose> key.

$json.X

If you disable Put All Variables in One Key in the node options, each variable will be available under its own key in $json.

Does not overwrite existing variables

If you have existing variables in your workflow, the Global Variable node will not overwrite them.

It will only add the variables that are defined in the credential.

Attribution

Inspired by n8n-nodes-globals and n8n-nodes-global-variables

https://github.com/umanamente/n8n-nodes-globals (MIT)
https://github.com/mrowrpurr/n8n-nodes-global-variables (MIT)