AI coding that lives in your IDE and can run fully offline.

Local LLMs via Ollama, LM Studio, or vLLM — or bring your own Anthropic, OpenAI, or Bedrock key. Six agent modes. Zero telemetry. Zero cloud sign-in.

Elixium Coder talks only to the endpoints you explicitly configure. No account required. No usage data collected. Designed for air-gapped environments, privacy-conscious teams, and anyone who thinks the IDE is still the right home for their coding agent.

Source-available, single-vendor. All code is public and auditable at https://github.com/IndirectTek/elixium-coder. Every commit is authored and signed by IndirectTek. No external contributions accepted — federal and enterprise customers get a provable single-vendor supply chain.

Migrating from Roo Code?

Roo Code is sunsetting on May 15, 2026, and the team is pivoting to cloud-only agents. If you want to stay in your IDE, keep your existing workflow, and never depend on a vendor's cloud being online — Elixium Coder is the landing spot.

The architecture and mode system will feel familiar. To bring your setup across:

Install Elixium Coder from the Marketplace.
Re-enter your API credentials in Settings → Providers (they're stored in VS Code's secret storage, not shared across extensions).
Copy any workspace rule files from .roo/rules/ to .elixium/rules/ (and .roo/rules-{mode}/ to .elixium/rules-{mode}/). The format is the same.
Copy .roomodes contents to .elixium/modes.yaml and .roo/mcp.json to .elixium/mcp.json if you use those.
Custom modes from the Roo modes UI can be exported and re-imported through Settings → Modes.

No cloud migration needed because there's no cloud. Your API keys and conversation history never leave the machine.

Install

In VS Code: Extensions → search Elixium Coder → Install.

Or from the command line:

code --install-extension IndirectTek.elixium-coder

Providers

Five providers are supported. Pick one:

Provider	Use for
OpenAI-Compatible	Ollama, LM Studio, vLLM, LocalAI, any OpenAI-compatible API
Anthropic	Claude Opus / Sonnet / Haiku
OpenAI	GPT via api.openai.com (also covers Azure OpenAI)
OpenAI-Native	OpenAI Responses API (reasoning models, stateful tool calls)
Bedrock	Claude / Llama / Titan via AWS Bedrock

Credentials are stored in VS Code secret storage.

Modes

Six built-in agent modes:

🏗️ Architect — plan and design before implementation
💻 Code — write, modify, refactor
❓ Ask — answers and explanations, no code changes
🪲 Debug — diagnose and fix issues
🪃 Orchestrator — coordinate across modes for multi-step projects
🎨 Designer — visual UX design that outputs renderable HTML/Tailwind, React components, SVG sketches, and Mermaid flows

Switch modes at any time from the dropdown in the chat input.

MCP

MCP servers are configured via .elixium/mcp.json (workspace) or your global config, and speak only to the endpoints you specify. See https://modelcontextprotocol.io/ for server setup.