The agent, inside your editor
One install puts the workforce in VS Code with the engine bundled for your platform: your repository, your shell, your provider keys. Nothing leaves your machine unless you sign in.
Instead of choosing a model and managing prompts, teams define the outcome. subsix.ai plans the work, assembles a specialized AI workforce, selects the right models and compute, executes the mission, verifies the result and continuously learns from the organization.
Version 0.27.10 · VS Code ^1.138.0Install from a gallery
The Marketplace listing and Open VSX carry one package per platform, because the engine inside is native. With a gallery there is nothing to unzip.
Or install a file
Every packaged build is on the download page with its size and sha256, for a machine with no gallery or no network at install time.
Or run the source
The extension is part of the product's source tree; build it and install it into this machine's VS Code without packaging anything.
Install it
Signed in, the extension points at the hosted server with the subsix.cloudUrl setting; signed out it runs everything locally. Set subsix.coreBinary to run a different engine build.
From a gallery
code --install-extension subsix.subsix
Or search subsix.ai in the Extensions view. VS Code picks the package for your platform.
From a file
# the .vsix for this machine's platform, from /download code --install-extension subsix-<version>-<platform>.vsix
Or run Extensions: Install from VSIX… in the command palette.
From the source tree
node clients/extension/build.mjs node clients/extension/install-local.mjs # copies into ~/.vscode/extensions # then reload the VS Code window
Keys, if you run it locally
subsix.ai: Configure API Keys (.env) # opens ~/.subsix/.env ANTHROPIC_API_KEY=... OPENAI_API_KEY=... DEEPSEEK_API_KEY=... HUGGINGFACE_API_KEY=...
What you get
The extension is the same product as the web app, run in your editor rather than in a browser. The work stays yours — and the parts that touch the outside world still ask.
Parallel chats as tabs; closing one keeps it in History.
Approvals with the diff for every edit and the command line for every command.
Checkpoints: review or undo the files a message changed.
Plan mode, then autonomous mode that carries an approved plan to the end.
Sub-agents, skills and the analyzers (gitleaks, osv-scanner, semgrep, golangci-lint…).
Long conversations summarized at the context window, with the transcript kept.
Operate it from the website through the local bridge when you want a bigger screen.
Packages in this release
Read from the release directory at build time: the size is the file's size and the digest is of the bytes you download. A platform row appears only when its package exists.
No packaged builds are present in this checkout. Run node clients/extension/build.mjs --all && node clients/extension/package-vsix.mjs to produce them.