gmlewis/spin-moonbit-sdk-examples

Examples for the experimental Spin SDK for the MoonBit programming language.

Each directory contains a README with additional instructions. It is required to install dependencies via moon install.

Templates

If you wish to install MoonBit templates for the [Spin CLI tool] (v3), you can run:

spin templates install --git https://github.com/gmlewis/spin-moonbit-sdk

The templates are located in the templates folder.

Hints

When using the spin-moonbit-sdk library, it is required to turn the WASM module into a WASM component. To do this, one needs to access the WIT files of the spin-moonbit-sdk. They can be accessed from the local .mooncakes directory.

Hence the build command in the spin.toml files looks like this:

[component.hello.build]
command = """\
  moon build --target wasm && \
  wasm-tools component embed .mooncakes/gmlewis/spin-moonbit-sdk/wit ./target/wasm/release/build/hello-world.wasm -o hello-world.wasm --encoding utf16 -w http-trigger && \
  wasm-tools component new hello-world.wasm -o hello-world.wasm
  """
watch = ["**/*.mbt"]

The wit directory is referenced from the .mooncake directory.

Status

The code has been updated to support compiler:

$ moon version --all
moon 0.1.20260209 (b129ae2 2026-02-09) ~/.moon/bin/moon
moonc v0.8.1+bd827dc85 (2026-02-09) ~/.moon/bin/moonc
moonrun 0.1.20260209 (b129ae2 2026-02-09) ~/.moon/bin/moonrun
moon-pilot 0.0.1-df92511 (2026-02-09) ~/.moon/bin/moon-pilot