# Changelog #028
URL: /changelog/changelog-028

---
title: "Changelog #028"
sidebarTitle: "Changelog #028"
llm: true
image: "/images/changelog/28.png"
imageAlt: "Announcing Changelog #028"
publishedAt: "2026-06-06"
---
import Image from 'next/image';

<Image
  src="/images/changelog/28.png"
  alt="Announcing Changelog #028"
  width={800}
  height={400}
/>
Hey everyone. This was a session-and-CLI week.

The big one: a browser session can now release itself when your agent goes quiet, so you stop paying for tabs nobody's using. The CLI also grew up a bit, with commands to manage sessions and browse or install agent skills straight from the terminal. The rest is docs and API cleanup.

### ⭐ New

#### Inactivity-based session timeouts

Set an inactivity timeout and the browser session releases itself once your agent goes quiet, instead of running until the hard limit.

#### CLI commands for sessions and agent skills

The Steel CLI now manages sessions and agent skills directly, including an interactive skills catalog and an `--all` install option.

### 🔧 Improvements

*   The docs have a dedicated agent skills section now, covering installation, authoring, and troubleshooting, and the quickstart walks through skills as part of setup.

*   Docs pages support markdown content negotiation, so you can pull raw markdown straight from the site.

*   API error responses are more consistent now: clearer validation and recovery messages, and standardized docs links in the payload.

*   Anti-bot detection now covers DataDome, Imperva, Amazon WAF, and FunCaptcha, and we record which captcha type was detected on the session.

*   Steel Browser switched its PDF tooling to MuPDF.

### 🐛 Bug Fixes

*   Corrected billing credit grants and usage display so they match each plan's configured credits.

*   Fixed Steel Browser fingerprint injection so launch configs that skip injection are respected.

*   Fixed docs pages that intermittently returned 500s when rendering raw markdown outside the prerender cache.