Go

go install go.bytecodealliance.org/cmd/wit-bindgen-go@latest

weather/
├── main.go            the implementation
├── wit/
│   └── world.wit      the interface — defines your tools
├── go.mod
├── noorle.yaml        metadata, permissions, credentials
├── build.sh           what `noorle plugin build` runs
├── prepare.sh         what `noorle plugin prepare` runs
├── .env.example
├── gen/               generated bindings — build output, not edited
└── dist/
    ├── wit-package.wasm   the bundled WIT package
    └── plugin.wasm        build output

package example:weather;

world weather-component {
    include wasi:cli/imports@0.2.7;
    import wasi:http/outgoing-handler@0.2.7;

    /// Check the current weather for a location
    export check-weather: func(location: string, unit: string) -> string;
}

package main

import (
	weathercomponent "github.com/my_org/weather/gen/example/weather/weather-component"
	"github.com/my_org/weather/gen/wasi/cli/environment"
	outgoinghandler "github.com/my_org/weather/gen/wasi/http/outgoing-handler"
	"github.com/my_org/weather/gen/wasi/http/types"
	"go.bytecodealliance.org/cm"
)

func init() {
	weathercomponent.Exports.CheckWeather = func(location string, unit string) string {
		// ...
	}
}

func main() {}

module github.com/my_org/weather

go 1.23.0

require go.bytecodealliance.org/cm v0.3.0

schema_version: "1.0"

metadata:
  name: weather
  description: "Weather information plugin using OpenWeatherMap API"
  author: "Noorle Team"
  tags:
    - weather
    - api

permissions:
  network:
    allow:
      - host: "api.openweathermap.org"
  environment:
    allow:
      - key: OPENWEATHER_API_KEY

noorle plugin build

wkg wit build -o dist/wit-package.wasm
wit-bindgen-go generate --world weather-component --out gen ./dist/wit-package.wasm
go mod tidy
tinygo build -target=wasip2 \
  --wit-package ./dist/wit-package.wasm \
  --wit-world weather-component \
  -scheduler=none -opt=2 -no-debug \
  -o plugin.wasm .
mv plugin.wasm dist/plugin.wasm

wasmtime run --wasi http --env OPENWEATHER_API_KEY=your_api_key_here \
  --invoke 'check-weather("Austin", "metric")' dist/plugin.wasm

noorle login
noorle plugin publish