generated: '2026-08-25'
method: searched
source: >-
  https://github.com/secondlife (Linden Lab's public GitHub org) plus the PyPI and
  Visual Studio Marketplace registry metadata endpoints, queried unauthenticated
  2026-08-25.
note: >-
  Linden Lab publishes no client SDK for its HTTP APIs (Live Data Feeds,
  get_agent_id, Registration API). What it does publish first-party are the
  serialization and tooling libraries the Second Life platform itself is built on
  — LLSD codecs, the LEAP viewer plugin protocol library, the autobuild package
  manager — plus the official editor extension. Every entry below was resolved to
  a real registry record; none is a wrapper around the documented web APIs.
packages:
  - language: python
    registry: pypi
    name: llsd
    url: https://pypi.org/project/llsd/
    install: pip install llsd
    official: true
    version: 1.2.4
    published: '2024-04-02'
    repository: https://github.com/secondlife/python-llsd
    description: >-
      Linden Lab Structured Data (LLSD) serialization library — the wire format
      the Second Life Inventory API, the homepage.xml and lindex.xml data feeds,
      and the viewer capability system all use.
  - language: python
    registry: pypi
    name: llbase
    url: https://pypi.org/project/llbase/
    install: pip install llbase
    official: true
    version: 1.3.1
    published: '2023-04-03'
    repository: https://github.com/secondlife/python-llbase
    description: Base Linden Lab Python modules (the repo itself is labelled "Vintage python utility modules").
  - language: python
    registry: pypi
    name: llsd-asgi
    url: https://pypi.org/project/llsd-asgi/
    install: pip install llsd-asgi
    official: true
    version: 0.2.2
    published: '2024-03-16'
    repository: https://github.com/secondlife/llsd-asgi
    description: Drop-in LLSD content negotiation middleware for ASGI applications.
  - language: python
    registry: pypi
    name: autobuild
    url: https://pypi.org/project/autobuild/
    install: pip install autobuild
    official: true
    version: 3.10.2
    published: '2026-01-09'
    repository: https://github.com/secondlife/autobuild
    description: >-
      Linden Lab automated package management and build system, used to build the
      Second Life viewer and its third-party dependencies. Ships an `autobuild`
      CLI, but it is a build tool — not a client for any Second Life web API.
  - language: typescript
    registry: vscode-marketplace
    name: lindenlab.sl-vscode-plugin
    url: https://marketplace.visualstudio.com/items?itemName=lindenlab.sl-vscode-plugin
    install: code --install-extension lindenlab.sl-vscode-plugin
    official: true
    version: 1.0.6
    published: '2026-08-22'
    repository: https://github.com/secondlife/sl-vscode-plugin
    description: >-
      Second Life VSCode Plugin — binding extension for external LSL and SLua
      editing from the Second Life viewer. Publisher is `lindenlab`, confirmed via
      the Marketplace extensionquery API.
not_published:
  - registry: npm
    checked: '2026-08-25'
    result: >-
      No first-party Linden Lab / Second Life package. A registry search for
      "secondlife" returned only third-party projects (node-omv, secondlife-tools,
      @blackpaw/second-life-http-headers), none authored by Linden Lab.
  - registry: nuget
    checked: '2026-08-25'
    result: >-
      LibreMetaverse is present on NuGet and a fork of it lives at
      github.com/secondlife/libremetaverse, but the published NuGet package is
      maintained by the community LibreMetaverse project, not by Linden Lab. Not
      recorded as first-party.
  - registry: rubygems
    checked: '2026-08-25'
    result: >-
      github.com/secondlife/registration-api-examples is Ruby example code for the
      Registration API, published as a repository only — no gem.