The Postman for Prompt Engineering

Visual, organized, and collaborative prompt development for LLMs

Transform scattered prompts into a powerful development environment. Build, test, and iterate on prompts like never before.

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The Problem

Prompt engineering is disorganized. Prompts are scattered across code files, spreadsheets, and documentation. There's no unified way to develop, test, and iterate on prompts.

Just as Postman revolutionized API development, Trisool revolutionizes prompt engineering.

Powerful Features

Everything you need to build, test, and deploy better prompts

📁

Prompt Collections

Organize prompts by feature—"Onboarding Bot," "Summarizer," "Support Agent." Keep your workspace clean and structured, just like Postman collections.

🔄

Context Variables

Toggle between test data and live data. Switch inputs from simple queries to complex edge cases to see how your prompts behave in different scenarios.

⚡

Compare Mode

Run your prompt against multiple models simultaneously—GPT-4o, Claude 3.5, Llama 3. Compare cost vs. quality in real-time.

✅

Automated Evaluations

Define quality rules: "Must be valid JSON," "Under 100 words," "No PII." Auto-grade responses using stronger models to evaluate cheaper ones.

📊

Batch Testing

Upload a CSV of 50+ inputs and run your prompt against all of them automatically. Get comprehensive results and insights.

💻

Code Export

One-click export to Python (LangChain/LiteLLM), JavaScript, or raw cURL. Integrate seamlessly into your existing workflow.

Why Choose Trisool?

Built for developers, designers, and product managers who need a better way to work with prompts

🔒 Local-First

Desktop app (Electron/Tauri)
Prompts saved locally
Enterprise privacy
Git-compatible storage

👥 Non-Developer Friendly

Clean, intuitive interface
No complex "spans" or "traces"
Built for PMs and QA testers
Visual prompt editing

🌐 Vendor Agnostic

Works with any LLM provider
Export to any format
No ecosystem lock-in
100+ models via LiteLLM

How It Works

Get started in minutes

Create Collections

Organize your prompts into collections by feature or use case. Keep everything structured and easy to find.

Build & Edit

Use our visual editor with role separation (System, User, Assistant). See variable highlighting and real-time linting.

Test & Compare

Run prompts against multiple models simultaneously. Upload CSV files for batch testing. Get instant feedback.

Export & Deploy

Export to your preferred format and integrate into your codebase. One-click deployment to production.