UMBRA

The shadow behind your workflow.

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Features

Built different.

01

Context-Aware

Maintains deep context across your entire workflow, adapting to patterns as you work.

02

Tool Native

Integrates directly with your existing tools — no wrappers, no friction, just execution.

03

Persistent Memory

Learns your codebase structure, preferences, and decisions across every session.

04

Zero Config

Drop Umbra into any project and it starts working. No YAML, no schemas to define.

Quickstart

Up in seconds.

No config files. No setup wizard. Pick your platform, run two commands, and Umbra is reading your project.

Read the full documentation
winget install Umbra.Agent
umbra

Changelog

Every version, in the open.

v0.3.0 latest
  • Persistent memory across sessions
  • Tool integration layer
  • Improved context window management
  • New plugin API
v0.2.1
  • Bug fixes in async execution
  • Better error reporting
  • Performance improvements
v0.1.0 initial
  • Initial public release
  • Core agent loop
  • Basic tool support

The brief

Common questions.

What exactly is Umbra?

Umbra is an AI agent that runs locally in your terminal. It reads your project, understands your codebase, and works silently in the background — running commands, editing files, and surfacing context without breaking your flow.

Which operating systems are supported?

Windows (via winget), macOS (via Homebrew), and Linux (via the install script). All three platforms are first-class — no feature gaps between them.

Does Umbra send my code to the cloud?

Only the context needed to answer your query is sent to the model. Your full codebase stays local. You can also configure Umbra to run against a local model endpoint for fully offline operation.

Can I use Umbra without an internet connection?

Yes. Point Umbra at any OpenAI-compatible local server (Ollama, LM Studio, etc.) and it works entirely offline. Set the endpoint in your config or via environment variable.

How is Umbra different from other AI coding tools?

Umbra is a background agent, not a chat interface. It watches your project state, runs tools autonomously, and acts when needed — instead of waiting for you to ask. Think of it as the shadow behind your workflow, not another tab to switch to.

Is Umbra free?

The core agent is free and open source. You bring your own model API key. A hosted tier with team features and cloud sync is planned for later in 2026.