Astronaut above Earth

Holt is an agent.

A native desktop coding agent that works directly inside your local repository. Every tool call visible, every diff under your control.

Download Holt GitHub
Bring your own keys
Amazon BedrockAnt LingAnthropicAzure OpenAIBasetenCerebrasCloudflareDeepSeekFireworksGitHub CopilotGoogleGroqHugging FaceKimi For CodingMiniMaxMistralMoonshot AINVIDIAOpenAIOpenCodeOpenRouterQwenRadiusTogetherVercel AI GatewayxAIXiaomiZ.AI
01 / RESEARCH AND EXECUTION

Inspect every step
behind the answer.

Live product demoholt
What should we build today?
Review the landing page and make the product demo feel alive.
▾4 tool calls
Readsite/src/pages/index.astro
Searchfeatures and product demos
Editsite/src/components/DesktopDemo.astro
Runnpm run build

Implemented the live product demo in site/src/components/DesktopDemo.astro.

  • Recreated Holt’s Desktop conversation and composer.
  • Added typed input, visible tool activity, and a streamed reply.
  • Preserved reduced-motion preferences and added replay.

npm run build passes. All four pages build successfully.

Thinking…0s
Sending…
holt
Kimi K3.1 ProMax
Full accessCurrent checkout
main
An animated and interactive Holt Desktop coding agent environment.
02 / SETUP, ORCHESTRATE, RECOVER

Autonomous setup,
durable execution.

01/PROVIDER DISCOVERY

Autonomous catalog proposal & configuration

The agent queries vendor documentation, proposes the exact catalog definition, and writes endpoints and model definitions into the picker in one click.

Set up Moonshot AIholt
What should we build in holt?
Sending…
holt
GLM-5.3-Flash Max
Full accessCurrent checkout
main
The agent queries vendor documentation, proposes the exact catalog definition, and writes endpoints and model definitions into the picker in one click.
02/MULTI-AGENT WORKFLOWS

Plan-driven parallel execution graph

Workflows declare an explicit plan up front, then spawn, coordinate, and review specialized subagents on an interactive visual canvas.

Rust actor shootoutholt
What should we build in holt?
Sending…
holt
GLM-5.3-Flash Max
Full accessCurrent checkout
main
Workflows declare an explicit plan up front, then spawn, coordinate, and review specialized subagents on an interactive visual canvas.
03/RESTART RESILIENCE

Crash-proof resumption from intent journal

Quitting mid-turn loses nothing: on restart, the agent reconstructs its runtime state from the local intent journal and finishes the task.

Auth migrationholt
What should we build in holt?
Sending…
holt
GPT-5.2
Full accessCurrent checkout
main
Quitting mid-turn loses nothing: on restart, the agent reconstructs its runtime state from the local intent journal and finishes the task.

Your code stays local.
Your agent runs native.

Download for free GitHub