AgentPromptVersion and regression-test your agent prompts
Paste prompt version A and version B. AgentPrompt shows what behavior changed and flags a guardrail that A had and B dropped. You copy any older text back yourself. Decision-support, not a certificate.
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Key takeaways
- Saved studio runs
- Diff view
- Regression check
AgentPrompt — decision-support themes
Honest capability chips — not fabricated customer counts or uptime stats.
AgentPrompt — definition
AgentPrompt — Version and regression-test your agent prompts Use it as decision-support: demo mode works without a live key; live runs require configuration. No fabricated metrics, and no claims for SSO/CSV/Slack unless that surface is actually shipped.
What this is NOT
- Not a law firm, GRC platform, or certification body.
- Not a guarantee that outputs will satisfy every regulator or auditor.
- Not a substitute for qualified human review on high-stakes decisions.
Controller / Processor — When packs mention privacy roles, we use GDPR Art.4 labels (decision-support only).
Where teams get stuck without AgentPrompt
Saved studio runs
Without reliable saved studio runs, work stays inconsistent and gaps show up after ship.
Diff view
Without reliable diff view, work stays inconsistent and gaps show up after ship.
Regression check
Without reliable regression check, work stays inconsistent and gaps show up after ship.
Guardrail-loss notes
Without reliable guardrail-loss notes, work stays inconsistent and gaps show up after ship.
Describe. Review. Ship with AgentPrompt
Version and regression-test your agent prompts
Saved studio runs
Saved studio runs — deterministic and exportable. Decision-support, not a certificate.
Diff view
Diff view — deterministic and exportable. Decision-support, not a certificate.
Regression check
Regression check — deterministic and exportable. Decision-support, not a certificate.
Guardrail-loss notes
Guardrail-loss notes — deterministic and exportable. Decision-support, not a certificate.
Everything you need to ship faster
Saved studio runs
Use AgentPrompt to saved studio runs.
Diff view
Use AgentPrompt to diff view.
Regression check
Use AgentPrompt to regression check.
Guardrail-loss notes
Use AgentPrompt to guardrail-loss notes.
From idea to result in 3 steps
Input
Describe your goal in plain language.
Process
AgentPrompt structures the work and runs the workflow.
Ship
Copy, export, or upgrade for 40 runs/day · 300/mo.
Where teams use AgentPrompt
Version and regression-test your agent prompts
Saved studio runs
Use AgentPrompt to saved studio runs.
Try it on this page
or generate below.
Saved history
What you get on the free tier
Paste two prompts
Paste version A and version B and read the diff on this page — no account, no credit card.
Guardrail check
The check flags a constraint present in A and missing in B. It does not score a hidden eval set.
Finite AI caps
Free is 3 runs per day and 15 per month. Pro is 40 per day and 300 per month. Over the cap the API returns 429 until reset.
Honest boundaries
AgentPrompt — Version and regression-test your agent prompts Use it as decision-support: demo mode works without a live key; live runs require configuration. No fabricated metrics, and no claims for SSO/CSV/Slack unless that surface is actually shipped. Decision-support only — not a certificate, legal opinion, or conformity assessment.
Simple plans that scale
All paid plans include
- Saved studio runs
- Diff view
- Regression check
- Email support on paid plans — no hidden add-ons for core studio use
- Limited daily AI runs (3/day · 15/mo)
- Studio demo (no extra LLM fee)
- AI included: 40 runs/day · 300/month
- No separate AI subscription required
- Priority support · 2 months free with yearly
Feature comparison
What each plan includes — quotas reflect the enforced fair-use limits.
| Dimension | Free | Pro | Enterprise |
|---|---|---|---|
| Usage | |||
| AI runs | 3/day · 15/mo | 40/day · 300/mo | 200/day · 3000/mo |
| Report export | Watermarked | Clean export | Clean export |
| Audit log | Not included | ✓ Included | ✓ Included |
| Product | |||
| Saved studio runs | ✓ Included | ✓ Included | ✓ Included |
| Diff view | ✓ Included | ✓ Included | ✓ Included |
| Regression check | ✓ Included | ✓ Included | ✓ Included |
| Guardrail-loss notes | ✓ Included | ✓ Included | ✓ Included |
| BYOK (your LLM key) | Not included | Not included | ✓ |
| SSO | Not included | Not included | Roadmap |
| Support & compliance | |||
| Support | Community | Priority | Custom SLA |
Already paid? Unlock Pro with your license
Licenses are issued manually after your payment is confirmed: we generate one per paid order and send it to the purchase email, typically within a few hours. Enter it below to activate Pro on this device — no account needed. Nothing yet? Write to lixingliangsy@163.com and reference your order email.
Your questions, answered
What does AgentPrompt do?
Paste version A and version B. It shows what behavior changed and flags a guardrail that A had and B dropped. You copy any older text back yourself.
How does the regression check work?
Paste version A and version B. The check flags a guardrail or instruction present in A and missing in B. It does not run a hidden evaluation set or a quality score.
Which prompt formats are supported?
Plain-text system and task prompts for LLM agents — any framework that stores prompts as text. You paste or connect the prompt file.
Can I restore an older prompt?
The report tells you what B dropped. Putting the old text back into your agent is a copy you make. This app does not push a rollback into your runtime.
Does it need my own model key?
Free and demo run without live calls; Pro uses the platform key under fair use. Bring-your-own-key is available on Enterprise.
Which countries and regions can I use AgentPrompt in?
As a cloud web app it is reachable from any country with internet access; there is no region lock by default.
Is my prompt data private?
Prompts are used only to produce diffs and scores and are not sold. Details are on our Privacy page; Enterprise can include a DPA/NDA.
What languages does it support?
Interface and reports are in English; prompts in other languages are scored wherever the underlying model understands them.
Quick answers
- Paste two prompt versions.
- Read what behavior changed.
- Flag a guardrail present in A and missing in B.
- Decision-support only — you copy the old text back yourself.
How it compares
| Dimension | Manual | AgentPrompt |
|---|---|---|
| Storage | Scattered files | Saved runs in this browser |
| Change review | Read raw diffs | Clean side-by-side diff |
| Safety | Manual re-test | Automated regression check |
| Best for | Solo tweaks | Teams shipping agents |
When not to use: When only human judgement can decide desired behaviour — pair it with a human review step.
- agentprompt howto 2026 — From the AgentPrompt blog.
- agentprompt overview 2026 — From the AgentPrompt blog.
- Fleet launch notes — AgentPrompt ships in the LX AI Micro-SaaS fleet.
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