The AI agent 'Grok Build' is now open source.
On July 16, 2026, Japan time, SpaceXAI (formerly xAI) announced that it would open-source its AI agent app, 'Grok Build.'
Open Source | SpaceXAI
https://x.ai/open-source
We've open-sourced Grok Build and have reset usage limits for all users.
— SpaceXAI (@SpaceXAI) July 15, 2026
Open sourcing Grok Build allows anyone to support making a reliable and robust harness. Check out our code, including the Git repo for the Grok Build CLI. https://t.co/3SSvPu2Nrz
Grok Build is an AI agent released in May 2026 that enables automated coding using Grok 4.5. In addition to autonomously executing coding tasks, it also allows users to ask Grok questions within the terminal and create coding plans in Plan mode. Furthermore, it supports functionality extensions via Skills and MCP servers.
xAI releases beta version of coding agent CLI tool 'Grok Build' - GIGAZINE
The source code for Grok Build was open-sourced on July 16, 2026 (Japan time). The code is available at the following link and is licensed under the Apache License Version 2.0.
GitHub - xai-org/grok-build: SpaceXAI's coding agent harness and TUI. Fullscreen, mouse interactive, extensible. · GitHub
https://github.com/xai-org/grok-build
SpaceXAI is urging users who discover vulnerabilities in Grok Build to report them on HackerOne.
X/xAI | Bounty Policy | HackerOne
https://hackerone.com/x?type=team
Regarding Grok Build, there have been reports of issues where ' codebases and authentication information are being sent to SpaceXAI's servers .' According to SpaceXAI, the data upload function was enabled by default in the initial beta version of Grok Build. Subsequently, on July 12, 2026, they disabled the data upload function by default and deleted all coding data that had been uploaded up to that point.
In response to user questions about privacy: Since launch, Grok Build has fully respected zero data retention (ZDR). All users have always had the ability to disable data upload in the CLI.
— SpaceXAI (@SpaceXAI) July 15, 2026
When data upload was disabled, this choice was respected. In the early beta, data…
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