Guide

Prompt versions, A/B metrics and rollback

Last updated: September 8, 2026

Your system prompt is the biggest lever on booking performance — so GodSetter never lets you overwrite it blindly. Every save creates a new numbered version, every version accumulates its own call metrics, and any previous version can be restored with one click.

How versions work

Edit the prompt in the agent editor's Prompt tab, optionally add Version notes (for example "added recording disclaimer" — future you will thank you), and click Save new version. The new version becomes the active one immediately: the next calls use it. Nothing is ever overwritten — the previous versions stay in the history.

The Prompt tab shows a Version history card with the five most recent versions and a Restore button next to each inactive one. The full list lives in the Versions tab.

Per-version call metrics (A/B)

The Versions tab lists every version with its notes, date and author, plus — once calls have been placed with it — a compact metrics row:

MetricMeaning
CallsCalls placed while this version was active.
BookedAppointments booked on those calls.
ConversionBooked as a percentage of calls.
Avg durationAverage call length, in seconds.

This turns the tab into a simple A/B tool: save a prompt variant, let it collect calls, then compare its conversion against the previous version and either keep it or roll back.

One honest caveat, shown in the tab itself: stats come from calls placed after this feature shipped. Older calls are not attributed to any version, so a version that only ran before then shows "No call data yet".

Test calls never enter these numbers: a browser web test or an in-app test lead is flagged as a test and excluded from per-version metrics, so you can rehearse a new prompt as many times as you like without moving its conversion.

Compare two versions

At the top of the Versions tab, Compare versions shows a line-by-line diff between any two versions — by default the previous one against the active one, so "what did the last change touch?" is answered on open. Added lines are green, removed lines red, and the counter above the diff tells you how many lines changed. Pick any pair from the two selectors to review an older change. With a single version saved the card simply says a second version is needed.

Rollback in one click

On any non-active version in the Versions tab, click Activate (the Restore button in the Prompt tab's history card does the same). That version becomes the active prompt and the next calls use it — the "wrong" version stays in the history too, so a rollback is never destructive and you can roll forward again just as easily.

Every rollback is recorded in the audit log (the Audit page), so you can always reconstruct which prompt was live when.

Sync to the voice engine

Prompt saves, rollbacks and settings saves all sync your changes to the voice engine (Retell) automatically. The sync is best-effort by design: if the voice engine is momentarily unreachable, your save in GodSetter still succeeds and the error is logged — a sync hiccup never blocks or loses your work. If that happens, the change reaches the voice engine on the next successful save.

Next steps