Advanced Scripting API (at.*)

Every place a request or test runs has a JavaScript layer exposed through the global at object:

• at.request — read and mutate the outgoing request before it is sent
• at.response — parse and inspect the response
• at.environment — read/write environment variables (persisted)
• at.flow — read/write in-memory variables passed between steps
• at.export — build a ready-to-send report (JSON / HTML / PDF) from an After All script

Where scripts run

• Pre-request and post-response (Processors)
• Flow and load-test lifecycle: before all / after all, per step

A fetch API is available inside scripts to call external services mid-run.