Developers
Ship consistent prompts for code review, testing, and architecture.
Prompt engineering IDE
Structure AI thinking. Stop writing prompts manually.
JPrompt is an IDE for prompt engineering. Build reproducible JSON prompts for ChatGPT, Claude, and Gemini in minutes.
ChatGPTClaudeGeminiJSON Schema
Manifest previewLive
{
"system_manifesto": {
"role": "Product Systems Designer",
"communication_style": "Direct, action-first",
"expertise": ["JTBD", "Roadmapping"]
},
"project_context": {
"project_name": "Launch OS",
"target_audience": "PM + Eng"
},
"task_specification": {
"current_objective": "Ship MVP in 4 weeks"
}
}Raw prompts fail at scale
Prompt text is fragile: no structure, no versioning, no reuse. Teams lose time rewriting the same logic and can’t reproduce outputs.
- No consistent format
- No reproducibility
- Hard to review or share
Structured prompts make AI reliable
JPrompt turns ideas into structured JSON with a system manifesto, context, and constraints—ready for any model and easy to iterate.
- Clear roles and constraints
- Reusable prompt blueprints
- Team-friendly collaboration
How it works
Three steps from idea to JSON prompt.
- 01
Choose direction
Pick a preset or start from scratch based on your project type.
- 02
Build system manifesto
Define role, expertise, constraints, and delivery style.
- 03
Get ready-to-use JSON
Export JSON prompts ready for ChatGPT, Claude, and Gemini.
Before / After
See how structured JSON upgrades prompt clarity and reuse.
Before
Write a product launch plan for our new feature. Include timeline, owners, and risks.
After
{
"system_manifesto": {
"role": "Product Systems Designer",
"communication_style": "Concise, actionable"
},
"project_context": {
"project_name": "Payments v2",
"target_audience": "PM + Eng"
},
"task_specification": {
"current_objective": "Launch plan",
"priority_focus": "Risks, timeline, owners"
}
}Benefits
- Reusable format
- Cleaner outputs
- Team-ready context
- Easy to audit
Built for teams who ship
Tailored workflows for every role.
Product Managers
Turn vague requirements into structured, actionable prompts.
Marketing
Standardize campaign briefs and creative directions.
Research
Document experiments with reproducible input format.
Why JPrompt vs ChatGPT
Chat is great. Structured prompts are better.
| Capability | ChatGPT chat | JPrompt system |
|---|---|---|
| Reproducibility | Low | High |
| Version control | Manual | Built-in |
| Team collaboration | Copy/paste | Shared manifests |
| Structured context | Unstructured | JSON schema |
Features
Everything you need for prompt engineering at scale.
JSON prompts
Generate structured outputs for any AI model.
System manifesto
Define role, tone, expertise, and constraints.
Live preview
See the JSON update as you type.
History
Track iterations and re-use successful prompts.
Export
Download individual prompts or full projects.
Pricing
Start free, scale when you’re ready.
FeaturesCompare plans | Hobby (Free) Beginners $0forever | Popular Solo Freelancers, developers $9.90per month Prices excl. additional fees | Studio Pros, prompt engineers $24.90per month Prices excl. additional fees | Team Small agencies $64.90per month Prices excl. additional fees |
|---|---|---|---|---|
| Projects | 1 project | Unlimited | Unlimited | Unlimited |
| Variables | — | ✓ | ✓ | ✓ |
| API (Assemble) | — | 1,000/day | 10,000/day | Unlimited |
| API (Proxy) | — | — | ✓ | ✓ |
| AI Tokens | — | 50k/month | 300k/month | 1M/month |
| Version History | ✓ | ✓ | ✓ | ✓ |
| Environments | — | ✓ | ✓ | ✓ |
| Workspaces | — | — | — | Up to 5 users |
Build your first structured prompt today
Start free and ship repeatable AI workflows.