Own the definitional queries teams ask before they ship a prompt change to a live agent.
Definitional
What this studio means by two prompt versions
Target query: what is prompt versioning
Here, a version is the text you paste. Put the earlier prompt in A and the candidate in B. The note says what behavior changed. It does not keep a canonical archive, and it does not roll your agent back.
How-to · HowTo
Prompt regression testing: catch a lost guardrail before shipping
Target query: prompt regression testing agent
Paste A and B. The check flags a constraint that A stated and B dropped — a citation rule, a refund cap, an approval line. It does not prove the agent is safe, and it does not restore the old prompt for you.
How-to
How to read a prompt diff
Target query: prompt diff best practices
Read what behavior changed, then read whether a guardrail disappeared. The studio does not open a pull request or block a deploy.
Definitional
What a prompt diff shows, and what it does not
Target query: prompt diff limits
You see instructions that were added, removed, or reworded, and a flag when B dropped a guardrail from A. You do not get a statute mapping, a quality score, or a one-click rollback.
How-to
Paste two prompt versions
Target query: compare two agent prompts
Paste version A and version B, then choose diff, regression, or both. If a guardrail was lost, fix the text in your own editor. Free is 3 runs per day and 15 per month. Pro is 40 per day and 300 per month.
Notes on diffs and guardrail checks. They are not a legal opinion, and this product does not map a statute.
Paste the previous prompt and the new one. Read what behavior changed, and whether a guardrail disappeared.
A diff shows behavior that changed between two pastes. It does not map a statute and it does not roll your agent back.
Open the studio, paste version A and version B, and read the guardrail note. No account is required for the demo.
Diff A against B, confirm no guardrail was dropped, and copy the text you want into your agent yourself.
Ask what behavior changed between A and B, then check whether a guardrail disappeared.
The check asks one question: did version B drop a constraint that version A stated?
Git stores text. This studio reads two pastes and flags a missing guardrail. It does not replace your repository.
Version A and version B are the two texts you paste. The studio does not keep the canonical history of your agent.
Publish + syndicate per gtm-launch (IH + GEO indexes). Each post carries 3 authoritative refs.