Open source · VS Code · Pure C#/.NET

Your AI coding agent.
Inside VS Code.
Powered by any model.

Litos understands your codebase, edits files, runs commands, fixes errors, and completes multi-step development tasks—without making you leave your editor.

⌁ Install free in VS Code ↗▶ See it build
Free & open sourceCloud or local modelsApache 2.0
Litos — Live Demo⋯
See it in action

Real tasks. Unedited results.

Watch Litos plan, write, run, and iterate on actual projects—not a scripted product tour.

Litos building a WinForms 15-puzzle game▶Featured build
C# · WinForms · End to end

Watch Litos build a complete 15-puzzle game

From an empty project to a working game: planning, coding, building, and fixing errors.
Litos adding features to an existing PostgreSQL application▶
Existing codebase · PostgreSQL

Adding features to a real application

See Litos understand an existing project and extend it without starting over.
Litos AI agent working through Telegram▶
Litos.Api · Telegram

Driving the agent from another application

The same Litos agent creates Mermaid diagrams through a Telegram integration.
Cloud or local—the model is yoursANTHROPICOpenAIGeminiOpenRouterOllamaLM Studio
What it does

From request to working code.

Not another chat window. Litos is an agent that can understand, act, and verify—while you remain in control.

01
⌘

Understands your codebase

Litos explores the repository, follows dependencies, and builds context before it changes anything.

02
±

Edits across files

Describe the outcome. Litos plans the work, edits the right files, and shows you a reviewable diff.

03
>_

Runs and verifies

It runs builds, tests, scripts, and terminal commands—then iterates when something fails.

04
✦

Cloud or local models

Use Claude, GPT, Gemini, OpenRouter—or run local AI models through Ollama, LM Studio, and compatible endpoints.

Why Litos

Powerful enough to act.
Open enough to trust.

Most coding agents ask you to trust a black box. With Litos, the reasoning loop, tools, sessions, and integrations are code you can inspect, debug, and extend.

Explore the source on GitHub ↗
What you getLITOSClosed agents
Open-source agent loop✓—
Your choice of AI model✓Limited
Bring your own API key✓Sometimes
Inspectable tool calls✓—
Extend with MCP + Skills✓Varies
Built in pure C#/.NET✓—
Minimal, by design

A focused core. Extensible with MCP.

Litos’s internal coding tools are deliberately fixed, minimal, and auto-approved across the VS Code extension, Litos.GUI, and Litos.Api. They do not have individual permission controls.

  • ✓ Small, predictable internal toolset
  • ✓ Internal tools work without approval prompts
  • ✓ Add and manage your own MCP servers

Litos.Api: A generic AI agent exposed through a REST API, so developers can integrate the Litos agent into their own applications, interfaces, and workflows. It also provides granular permissions for tools exposed by registered MCP servers.

◇Registered MCP serversChoose which integrations are active
● User managed
GitHub MCP
PostgreSQL MCP
Filesystem MCP
Browser MCP
Internal tools remain unchangedMCP settings
Start building

One extension.
Any model. Your code.

Keep the editor you already love. Add an agent you can actually understand.

⊞ Windows◆ macOS
Install free in VS Code ↗View on GitHub ↗
First-class support for Windows and macOS · Requires VS Code
Common questions

Good to know.

Is Litos free?+

Yes. Litos is open source under Apache 2.0. You bring your own model provider API key.

Can I use local AI models?+

Yes. Connect Litos to models running locally through Ollama, LM Studio, or another compatible local endpoint.

Which operating systems are supported?+

Litos currently provides first-class support for Windows and macOS.

Does it replace VS Code?+

No. Litos is an extension for the VS Code you already use.

Is it only for .NET projects?+

No. The agent is built in C#/.NET, but can work with any language your selected model understands.