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SideCar

A free, open-source, local-first AI coding assistant for VS Code.

SideCar is a VS Code extension that serves as a drop-in replacement for GitHub Copilot and Claude Code. Use local Ollama models or the Anthropic API for AI-powered coding — with full agentic capabilities, inline completions, and tool use.

No subscriptions. No data leaving your machine. No vendor lock-in.


How SideCar compares

Most local AI extensions for VS Code are chat wrappers or autocomplete plugins. SideCar is a full agentic coding assistant — closer to Claude Code or Cursor than to a chatbot.

Capability SideCar Continue Llama Coder Twinny Copilot (free)
Chat with local models Yes Yes No Yes Yes
Inline completions Yes Yes Yes Yes Yes
Autonomous agent loop Yes No No No No
File read/write/edit tools Yes No No No No
Run commands & tests Yes No No No No
Security & secrets scanning Yes No No No No
MCP server support Yes No No No No
Git integration (commit, PR) Yes No No No No
Diff preview & undo/rollback Yes No No No No
Fully offline / self-hosted Yes Yes Yes Yes No
Free & open-source Yes Yes Yes Yes Freemium

Quick start

  1. Install Ollama
  2. Install SideCar from the VS Code Marketplace
  3. Click the SideCar icon in the activity bar
  4. Start chatting — SideCar launches Ollama automatically

See the Getting Started guide for more details.


Requirements

  • Ollama installed and in your PATH (for local models)
  • Visual Studio Code 1.88.0 or later

SideCar is an independent project by Nicholas Donatelli. MIT License.