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Runtime variables in Requestly are temporary variables that last until the session is closed. Unlike environment or collection variables, they are available globally across all workspaces.
Runtime variables are the only type of variables that work across multiple workspaces.
You can choose whether variables should persist it’s value after restarting the app .

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Why use runtime variables?

Runtime variables are designed to give you flexibility when testing APIs across different workspaces. Some common use cases include:
  • Quick testing: Store temporary values like access tokens or session IDs while debugging.
  • Cross-workspace usage: Share the same variable across multiple local workspaces without redefining it each time.
  • Persistence control: Choose whether the variable should survive after restarting the app or clear automatically for a fresh start.
Runtime variables are not synced to the cloud. They only exist locally on your device. If you switch machines or reinstall the app, these variables will not carry over.

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Creating a runtime variable

1

Open Requestly and Go to runtime variables.

From the sidebar, click on Runtime variables.
2

Create a new Variable

In the variables table, click + Add More and enter the variable details:
  • Key – The variable name (e.g., session_id).
  • Value – The value you want to store.
  • Type – Select from String, Number, Boolean, or Secret.
  • Persistent – Toggle whether the variable should be saved across app restarts.
    • Yes → Keeps its value after restarting the app.
    • No → Clears itself automatically on restart.

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Using runtime variables

Method 1: Insert variables directly in requests You can use runtime variables just like environment or collection variables. Wrap the variable name in double curly braces {{ }}: https://api.example.com/users/{{session_id}} Method 2: Set variables in scripts
You can define or update runtime variables in the Scripts tab using the rq.variables object. 
rq.variables.set("token", "12345");
rq.variables.get("token");