Learn WASMCLOUD with Real Code Examples
Updated Nov 25, 2025
Installation Setup
Install Rust or any language that compiles to Wasm (optional depending on actor language)
Install wasmcloud CLI tools
Start a wasmCloud host runtime (local or containerized)
Deploy capability providers for services needed (e.g., HTTP, Redis)
Register actors to the host and test local execution
Environment Setup
Install WasmCloud CLI
Install language toolchain (Rust, TinyGo, AssemblyScript, etc.)
Start wasmCloud host runtime locally
Register capability providers as needed
Deploy and test actors in the host environment
Config Files
wasmcloud.toml - actor and provider configuration
Cargo.toml / language-specific metadata
providers/ - provider configurations
src/ - actor source code
examples/ - sample deployment and usage
Cli Commands
wasmcloud up -> start local host
wasmcloud ctl deploy actor.wasm -> deploy actor module
wasmcloud ctl providers add provider.toml -> attach capability provider
wasmcloud ctl inspect -> check runtime and actor status
wasmcloud ctl logs -> view host and actor logs
Internationalization
Actors can handle UTF-8 encoded data
Localization handled within actor logic if needed
Supports multi-region deployment
Messages and API responses can be localized
Flexible for global deployments
Accessibility
N/A for UI, focus on backend
APIs should follow REST/gRPC standards
Secure communication channels supported
Providers can handle standardized data formats
Actors interact programmatically via messages
Ui Styling
Not applicable (backend/edge framework)
Frontend integration via HTTP or WebSocket capabilities
Can serve JSON/HTML via HTTP provider
Focus is on microservice logic, not UI
Styling handled by client-side applications
State Management
Actor-local state within WebAssembly module
Communication via messages in lattice
State persisted via capability providers
Async operations managed inside actors
Global coordination via lattice messaging
Data Management
Use capability providers for storage (Redis, Postgres, S3)
Actors handle data in Wasm memory safely
Message-based data passing between actors
Support for JSON, binary, and other formats
Secure data isolation per actor