Show HN: Brig – A MicroVM sandbox for AI coding agents on Mac and Linux
NOFire AI has open-sourced Brig, a microVM sandbox designed to run AI coding agents on Mac and Linux. The tool provides isolated environments for agents like Claude Code, allowing users to control shared project access and network permissions. All components, including the microVMM, are released under the Apache 2.0 license.
- ▪Brig is an open-source microVM sandbox for AI coding agents supporting Apple Silicon Macs and Linux systems.
- ▪The sandbox runs agents in an isolated Linux kernel environment where users can specify shared projects and credentials.
- ▪By default, the shared project remains writable and the network allows internet access within the sandbox.
- ▪The entire Brig codebase, including the microVMM, is under 20,000 lines of code and licensed under Apache 2.0.
Hacker News (AI / LLM) files mainly under ai. We currently carry 6,022 of its stories.
Story provenance
Source · retrieval · rights · ranking — open for full record
inspect →
Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | Ycombinator |
| Canonical URL | https://news.ycombinator.com/item?id=49802729 |
| Publication time | Tue, 22 Sep 2026 15:16:18 +0000 |
| Retrieval time | 2026-09-22T15:28:51.106Z |
| Last seen | 2026-09-22T15:28:51.106Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | 4j0xdqYt-Na2 · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Hi HN, I’m Spiros from NOFire AI. We’ve open-sourced Brig under Apache 2.0.Brig runs AI coding agents inside a microVM on Mac (Apple Silicon) and Linux (x86_64/ARM). It came out of our work on controlled autonomy for production remediation. The same isolation is useful when running coding agents with auto-approval on your own machine.The agent gets its own Linux kernel. You choose the project and credentials to share. The shared project remains writable, and the default network allows internet access.After installation, brig run claude starts Claude Code inside the sandbox.All components are Apache 2.0, including the microVMM, which is under 20,000 lines of code. The README covers installation, the architecture and the security model.
Excerpt limited to ~120 words for fair-use compliance. The full article is at Ycombinator.