# Hooks are kernel code: what changed in v1.4.0, sgit.ai > The changes to the article "Hooks are kernel code" in v1.4.0, paragraph by paragraph. *Source: · sgit.ai v0.7.87 · this file is generated from the same content as the page, so the two cannot drift. Every page on this site has a `.md` twin; internal links below point at them.* --- [Home](../../../index.md) / [Articles](../../index.md) / [Hooks are kernel code](../../hooks-are-kernel-code.md) / [Versions](../hooks-are-kernel-code.md) / v1.4.0 # Hooks are kernel code: what changed in v1.4.0 From v1.3.0 (2026-10-18, `de821285d`) to v1.4.0 (2026-10-27, `db67c5ce1`), paragraph by paragraph. 0 paragraphs added, 0 removed, 3 changed in place, 55 unchanged. About 0 words added and 139 removed. Insertions are marked like this, deletions like this; unchanged runs are folded to one line; figures appear as their file names. [← v1.3.0](v1.3.0.md) · [all versions](../hooks-are-kernel-code.md) 2 unchanged paragraphs !shot hk-first10.webp | images/ | The first ten hooks.hooks:Threethree this session runs, five tested in a sandbox,sandbox and two proposed: a hook that checks the other hooks, and an agent hook that reviews a push on the most capable model, read-only and without network. Between 4 and 26 lines of code each, and every one runs on every matching action, with the user's permissions.proposed. | comparison 22 unchanged paragraphs, under In short {#in-short}, Kernel code {#kernel}, A good case study {#case-study}… !shot hk-maturity.webp | images/ | A maturity model for hooks: five levels of how a rule is kept, from the prompt to off the machine, and three questions for every hook at every level: its power, the legs of the lethal trifecta it touches, and its sandbox. The less deterministic a hook is, the less it should be able to reach.hook. | architecture 13 unchanged paragraphs, under Where hooks run {#where}, A site and a feed {#site} !shot hk-site.webp | images/ | A hooks site and feed, run like a kernel tree.tree:Every hook starts as an intent,how a row of a behaviour policy, andhook is published with its graph, tests, version and signature.whatThethe feed lists every hook with its level, power, trifecta legs, version and hash; the change blast radius view climbs from a change to the intents and sessions it affects; installs are free and can run inside an organisation with no call home; paying buys state.lists. | architecture 18 unchanged paragraphs, under Pay for state, never to run {#billing}, The brief {#brief}, What this does not claim {#limits}… [← v1.3.0](v1.3.0.md) · [all versions](../hooks-are-kernel-code.md) --- *[Site index for agents](../../../llms.txt) · [HTML version](https://newsroom.sgit.ai/articles/versions/hooks-are-kernel-code/v1.4.0.html)*