Examples

Learn Calimero by exploring working examples. All examples include source code, README files, and Merobox workflow configurations.

Core Apps Examples

Core Apps Examples — Reference implementations from core/apps demonstrating SDK patterns and CRDT usage.

These examples live in calimero-network/core/apps:

• kv-store - Basic CRDT operations, key-value storage
• blobs - File/blob management with content addressing
• collaborative-editor - Text collaboration with RGA CRDT
• private-data - Private storage patterns
• team-metrics - Nested CRDT structures
• xcall-example - Cross-context communication

Quick start:

cd core/apps/kv-store
./build.sh
meroctl --node node1 app install --path build/kv_store.wasm

Application Examples

For complete applications, see:

• Battleships - Multiplayer game - battleships repository
• Shared Todo - Collaborative task list - shared-todo-backlog repository
• KV Store - Template app - Created via npx create-mero-app

By Complexity

Examples organized by difficulty:

• Starter: Basic CRDT usage (kv-store, counters)
• Intermediate: Event handling, blob management, nested structures
• Advanced: Cross-context calls, complex state machines

Getting Started with Examples

1. Clone or browse the repository
2. Read the README for setup instructions
3. Run ./build.sh or pnpm run logic:build
4. Install on a local node using meroctl
5. Explore the code and adapt patterns to your app

See Getting Started for installation and setup.