generated: '2026-09-09'
method: searched
source: >-
  npm registry.npmjs.org, crates.io, pypi.org, proxy.golang.org, api.nuget.org and
  the Fermyon / Spin Framework GitHub organizations, reached 2026-09-09.
provider: Fermyon
providerId: fermyon
description: >-
  First-party client libraries and plugins for the Fermyon surface. Two distinct
  families live here. (1) The Fermyon Cloud control plane (cloud.fermyon.com), whose
  only published client is the generated Rust client in fermyon/cloud-openapi plus
  the `spin cloud` CLI plugin. (2) The Spin application SDKs — the libraries you write
  a Spin/Wasm function with. Those SDKs were donated to the CNCF and now live under the
  spinframework GitHub org, so their SOURCE has moved even though several are still
  published under the @fermyon npm scope and the fermyon-authored crates.
note: >-
  Currency is the finding here. The Spin SDKs that migrated to the spinframework org
  are current (Rust 7.0.0 Aug 2026, Python 4.0.0 Apr 2026). The packages still carried
  under the Fermyon name are not: @fermyon/spin-sdk last published 2025-02-24, the
  Fermyon Cloud `spin cloud` plugin last released 2025-03-25, and the cloud-openapi
  repo that generates the Cloud REST client was last pushed 2024-05-10 — older than the
  Cloud API it wraps. Fermyon.Spin.Sdk on NuGet has not moved since 2022 and is alpha.
packages:
  - name: '@fermyon/spin-sdk'
    registry: npm
    language: javascript
    official: true
    version: 3.2.0
    published: '2025-02-24'
    url: https://www.npmjs.com/package/@fermyon/spin-sdk
    repository: https://github.com/spinframework/spin-js-sdk
    description: >-
      Spin SDK for JavaScript and TypeScript, built on ComponentizeJS. Still published
      under the @fermyon npm scope; the source repo has moved to the spinframework org.
  - name: spin-sdk
    registry: crates.io
    language: rust
    official: true
    version: 7.0.0
    published: '2026-08-25'
    url: https://crates.io/crates/spin-sdk
    repository: https://github.com/spinframework/spin-rust-sdk
    description: The Spin Rust SDK for building Spin components in Rust.
  - name: spin-macro
    registry: crates.io
    language: rust
    official: true
    version: 7.0.0
    published: '2026-08-25'
    url: https://crates.io/crates/spin-macro
    repository: https://github.com/spinframework/spin-rust-sdk
    description: Procedural macros supporting the Spin Rust SDK.
  - name: spin-sdk
    registry: pypi
    language: python
    official: true
    version: 4.0.0
    published: '2026-04-23'
    url: https://pypi.org/project/spin-sdk/
    repository: https://github.com/spinframework/spin-python-sdk
    description: Python SDK for Spin.
  - name: github.com/spinframework/spin-go-sdk
    registry: go
    language: go
    official: true
    version: v0.0.0-20250411015808-ee0bd1e7d170
    published: '2025-04-11'
    url: https://pkg.go.dev/github.com/spinframework/spin-go-sdk
    repository: https://github.com/spinframework/spin-go-sdk
    description: >-
      Spin Go SDK. Untagged — the Go module proxy resolves only a pseudo-version from
      the 2025-04-11 commit, so consumers cannot pin a semantic release.
  - name: Fermyon.Spin.Sdk
    registry: nuget
    language: dotnet
    official: true
    version: 0.1.0-alpha2
    published: '2022-09-04'
    url: https://www.nuget.org/packages/Fermyon.Spin.Sdk
    repository: https://github.com/spinframework/spin-dotnet-sdk
    description: >-
      .NET SDK for Spin. Pre-release and unpublished since 2022 — four years behind the
      Rust and Python SDKs.
  - name: cloud-openapi
    registry: git
    language: rust
    official: true
    version: null
    published: null
    url: https://github.com/fermyon/cloud-openapi
    repository: https://github.com/fermyon/cloud-openapi
    description: >-
      The generated Rust client for the Fermyon Cloud REST API. Distributed only as a git
      dependency (`cloud-openapi = { git = "https://github.com/fermyon/cloud-openapi" }`,
      per developer.fermyon.com/cloud/rest-api) — it is not on crates.io, so there is no
      registry metadata endpoint and no published version or date to record. The repo's
      last push was 2024-05-10.
  - name: cloud-plugin (spin cloud)
    registry: github-releases
    language: rust
    official: true
    version: v0.11.0
    published: '2025-03-25'
    url: https://github.com/fermyon/cloud-plugin
    repository: https://github.com/fermyon/cloud-plugin
    description: >-
      The `spin cloud` Spin CLI plugin — the supported way to deploy and manage apps on
      Fermyon Cloud. Installed via `spin plugins install cloud`, not via a language registry.
  - name: spin (CLI)
    registry: github-releases
    language: rust
    official: true
    version: v4.1.0
    published: '2026-08-26'
    url: https://github.com/spinframework/spin
    repository: https://github.com/spinframework/spin
    description: >-
      The Spin CLI itself. Also distributed through the Homebrew taps fermyon/tap and
      spinframework/tap. The `spin-cli` crate on crates.io is a stale 0.0.0 placeholder
      from 2022 and is not the distribution channel.
counts:
  total: 10
  official: 10
  by_registry:
    npm: 1
    crates.io: 2
    pypi: 1
    go: 1
    nuget: 1
    git: 1
    github-releases: 2