# Apple Seatbelt

Hacker Approved page: https://hackerapproved.com/p/seatbelt/

5 people recommended Apple Seatbelt in Hacker News comments, 3 had mixed feelings and 6 criticized it, November 2025 to October 2026. It was recommended in 4 of 12 months, in 6 threads. It does not meet the Hacker Approved badge rule.

**Verdict:** More people criticize it than recommend it. Built-in macOS sandbox that restricts file and network access at the kernel level. Critics note it is deprecated, poorly documented and weak for containers.

Summary written by Claude from the comments below.

## What people warn about

- Deprecated and largely undocumented (2 comments in the sample): "its deprecated and not maintained, Apple needs to make something new soon" ([source](https://news.ycombinator.com/item?id=47220047)) "seatbelt is largely undocumented." ([source](https://news.ycombinator.com/item?id=47219344))
- Unreliable in practice (1 comment in the sample): "Claude Code (aka `claude`) uses it, and it’s barely good for anything." ([source](https://news.ycombinator.com/item?id=47221147))

## Why people recommend it

- Limits file access to chosen folders (2 comments in the sample): "I like how these 2 sandboxes allow me to make all the file system r/o except the project folder which is r/w" ([source](https://news.ycombinator.com/item?id=47685523)) "This lets you limit file and even network access fairly trivially." ([source](https://news.ycombinator.com/item?id=48916072))
- Kernel-level enforcement of restrictions (2 comments in the sample): "The kernel-level approach is the right answer for protecting the host from the agent" ([source](https://news.ycombinator.com/item?id=47118584)) "The key design choice: Seatbelt operates at the kernel level." ([source](https://news.ycombinator.com/item?id=47203782))

## Other sandboxing tools people recommend

- [Bubblewrap (bwrap)](https://hackerapproved.com/p/bubblewrap/): 85 recommend, 19 mixed, 28 criticize
- [Agent Safehouse](https://hackerapproved.com/p/agent-safehouse/): 36 recommend, 5 mixed, 1 criticize
- [nono](https://hackerapproved.com/p/nono/): 24 recommend, 4 mixed, 3 criticize
- [Firejail](https://hackerapproved.com/p/firejail/): 20 recommend, 6 mixed, 6 criticize

## The badge

A product earns the Hacker Approved badge when at least 10 people recommend it, recommenders outnumber critics at least 2 to 1 (mixed feelings count toward neither side), it was recommended in at least 4 of the 12 months and in at least 5 different threads, and no single thread supplies more than half of the people who recommend it. Health and money products are never badged.

## Cite as

Hacker Approved, "Apple Seatbelt", https://hackerapproved.com/p/seatbelt/ (5 recommend, 3 mixed, 6 criticize; Hacker News comments, November 2025 to October 2026).

Counts updated 2 Nov 2026, with data through October 31, 2026.