Prompt Supplement vs Workspace Instructions

Short Answer

These two fields work at different scopes, and they also live in a different settings area from your brand baseline:

• Prompt Supplement = a global hard-rules layer
• Workspace Instructions = persistent rules for one specific workspace
• Business Context / Writing Pattern = brand baseline, set separately in Settings → Brand

Prompt Supplement

Prompt Supplement sits at the top of the prompt stack and applies broadly.

Use it for things like:

• forbidden words
• mandatory disclaimers
• legal or compliance rules
• store-wide hard constraints that should affect every relevant generation flow

Workspace Instructions

Workspace instructions belong to a specific workspace, such as Google Merchant Center.

Use them for:

• workspace-specific structure preferences
• workspace-only compliance or formatting preferences
• rules that should shape that workspace but should not spill into unrelated outputs

The Difference In Practice

If the rule should apply everywhere, it usually belongs in Prompt Supplement.

If the rule should apply only inside one workspace, it usually belongs in that workspace's instruction field.

Easy Examples

• "Never use the phrase premium quality." -> Prompt Supplement
• "In Google Merchant Center, prefer factual phrasing over promotional phrasing." -> GMC workspace instructions

What This Is Not

• It is not the same as Writing Pattern, which shapes style and approach.
• It is not the same as What to Emphasize, which is per-product direction.

Settings Boundary

Use the settings areas like this:

• Settings → Brand for store-level identity and writing baseline
• Settings → Content Engine for prompt rules and workspace-specific instruction fields

Model Preferences may affect which model/runtime path is used, but it does not rewrite or replace these prompt layers.