#siGit Code: on-device AI coding agent

Your code never has to leave your machine. siGit Code is a local-first AI coding agent for VS Code. It runs the on-device sigit agent, a quantized (GGUF) model that runs entirely on your hardware and works offline, and brings it into the editor as a chat interface.

The default agent needs no API keys and makes no cloud round-trips. The model lives on your device, and so does your code.

siGit Code also speaks the open Agent Client Protocol (ACP), so it can drive other ACP-compatible agents over stdio. The on-device agent is still the point.

siGit Code's home is code.sigit.si, where you can also find the hosted version (siGit Code Cloud). sigit.si is Git hosting built for AI workflows.

#Why local-first

• Your prompts and file contents stay on your machine.
• It works offline, including on a plane or behind an air gap.
• No per-token billing, so you can run it as much as your hardware allows.
• You choose the model and the weights, and they do not change underneath you.

ACP and multi-agent support are there for when you need a hosted agent. They are not the headline.

#Requirements

• VS Code ^1.90.0
• The sigit binary on your PATH. Install it from github.com/getsigit/sigit.

siGit Code only spawns the sigit binary over ACP, so it has no build-time dependency on the agent. Install the agent separately.

#Getting started

1. Install the sigit agent (see github.com/getsigit/sigit) and confirm sigit runs from your terminal.
2. Install this extension from the VS Code Marketplace.
3. Click the siGit Code icon in the Activity Bar to open the chat view.
4. Type a prompt and press Enter. The extension spawns the agent, opens a session in your workspace folder, and streams the response.

Commands (Command Palette):

Command	Description
siGit: Open Chat	Reveal the chat view.
siGit: New Session	Start a fresh session with the active agent.
siGit: Select Agent	Pick a configured agent (or browse the registry) and switch to it.
siGit: Restart Agent	Restart the active agent process.
siGit: Browse Agent Registry	Fetch the ACP registry, install an agent, and optionally use or default to it.
siGit: Refresh Agent Registry	Force a fresh fetch of the registry catalog.
siGit: Remove Agent	Unregister an installed agent from sigit.agents.

The chat view's title bar also surfaces New Session and Select Agent inline, with the registry commands (Browse / Refresh / Remove) and Restart Agent in the ⋯ overflow menu.

#Configuration

Setting	Type	Default	Description
sigit.agent.default	string	"sigit"	Key of the agent used by default, looked up in sigit.agents.
sigit.agents	object	on-device sigit	Registry of ACP agents ({ name, command, args, env }).
sigit.permission.mode	enum	"prompt"	prompt, allow, or deny for agent-requested actions.

#Add another ACP agent

The default registry contains only the on-device agent. To add another ACP-compatible agent, extend sigit.agents in your settings.json:

{
  "sigit.agents": {
    "sigit": {
      "name": "siGit (on-device)",
      "command": "sigit",
      "args": [],
      "env": {}
    },
    "claude-code": {
      "name": "Claude Code (ACP)",
      "command": "claude-code-acp",
      "args": [],
      "env": {}
    },
    "gemini": {
      "name": "Gemini CLI (ACP)",
      "command": "gemini",
      "args": ["--experimental-acp"],
      "env": {}
    }
  },
  "sigit.agent.default": "sigit"
}

Then run siGit: Select Agent to switch between them.

#Development

This project uses pnpm.

pnpm install
pnpm run watch       # esbuild in watch mode
# Press F5 to launch the Extension Development Host

Other scripts:

pnpm run compile     # tsc --noEmit type check
pnpm run lint        # eslint
pnpm run build       # production bundle (esbuild)
pnpm run test:smoke  # ACP round-trip against a mock agent
pnpm run package     # vsce package (.vsix)

#Releasing

Publishing is automated by .github/workflows/publish.yml. It runs the test suite, packages one .vsix, and publishes that same file to the VS Code Marketplace (vsce) and Open VSX (ovsx).

One-time setup, stored as repository secrets:

• VSCE_PAT: an Azure DevOps personal access token for the getsigit Marketplace publisher (Marketplace > Manage scope).
• OVSX_PAT: an access token for the getsigit namespace on open-vsx.org. The workflow creates the namespace on first publish if it does not exist.

To cut a release:

1. Bump version in package.json and add a CHANGELOG.md entry.
2. Push to main, then create a GitHub Release whose tag is v<version> (for example v1.0.1). The workflow checks the tag against package.json and fails on a mismatch.
3. The release publishes to both registries and attaches the .vsix to the GitHub Release.

To test packaging without publishing, run the workflow manually from the Actions tab with publish left unchecked. It uploads the .vsix as a build artifact.

#License

MIT

#Copyright

© 2026 Splitfire AB (siGit Code & Deploy).