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Key Concepts

This page walks you through the core ideas behind Leapter, following the journey from creating your first Blueprint to deploying it in production. Each section links to the detailed documentation where you can learn more.

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Blueprints

A Blueprint is the central building block in Leapter. It is a visual, executable representation of your business logic — displayed as a flowchart-like diagram that you can run, test, and deploy. Unlike logic written inside AI prompts, a Blueprint executes deterministically: the same inputs always produce the same outputs. This makes Blueprints reliable enough for billing, compliance, risk calculations, and any other scenario where “close enough” is not acceptable.

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Projects

A Project is a container that groups related Blueprints together. For example, you might have a project for “Insurance Calculations” that contains Blueprints for premium rating, no-claims bonus logic, and risk assessment. Projects are also the unit of sharing — when you work in a team, all team members can access the team’s projects and the Blueprints inside them.

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Creating a Blueprint

Leapter gives you three ways to create a Blueprint:

• Generate with AI — describe your logic in plain language and Leapter builds the full Blueprint for you. This is the fastest way to get started.
• From Example Template — start from a pre-built example (like a pricing calculator or greeting logic) and customize it.
• From Scratch — create an empty Blueprint and build every node yourself.

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The Blueprint Editor

The Blueprint Editor is where you build, inspect, and run your Blueprints. It has two views:

• Diagram View — the visual canvas where you see your logic as a flowchart. You can pan, zoom, select nodes, and edit them directly.
• Specification View — a read-only document view of the same logic, useful for reviewing the full specification at a glance.

The left panel shows the Data tab where you define your Blueprint’s inputs, outputs, and local variables.

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Blueprint Elements

Blueprints are made up of different types of nodes, each with a specific purpose. Here is a real Blueprint showing several element types working together — Call nodes (purple), Assignment nodes (yellow), Decision nodes (red), and Return nodes (green): Learn more in Controlling the Flow and Calling Other Blueprints.

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Editing a Blueprint

Once a Blueprint exists, you can modify it in two ways:

• Inline Editing — click on any node to edit its name, expression, or conditions directly on the canvas.
• AI Editing — select a node, press Ctrl+I, and describe what you want to change in natural language. Leapter’s AI modifies the logic for you.

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Testing

Before deploying, you can verify your Blueprint works correctly:

• Test your Blueprint — run your Blueprint with sample inputs directly in the editor and inspect the outputs step by step.
• Test Suites — create reusable sets of test cases that you can run repeatedly to catch regressions. You can also auto-generate test cases with AI.

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Deploying

Once tested, you can connect your Blueprint to the outside world through multiple channels: All API-based integrations require an API Key for authentication. After deployment, you can monitor executions in the Prod Runs panel inside the editor — see inputs, outputs, and replay any run. Learn more in Deploy & Integrate.

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Teams and Collaboration

Leapter supports working together through Teams. Create a team, invite members, and share projects. Inside shared Blueprints, you can use Comments to discuss specific nodes, mention team members, and track open feedback.

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What to do next

Ready to build? Head to Generate with AI to create your first Blueprint in minutes.