# Changelog #024
URL: /changelog/changelog-024

---
title: "Changelog #024"
sidebarTitle: "Changelog #024"
description: "Deep research cookbook examples using Claude Agent SDK subagents, plus a round of Files API docs corrections."
llm: true
image: "/images/changelog/24.png"
imageAlt: "Announcing Changelog #024"
publishedAt: "2026-05-08"
---
import Image from 'next/image';

<Image
  src="/images/changelog/24.png"
  alt="Announcing Changelog #024"
  width={800}
  height={400}
/>
Hey everyone! Quiet week. Two things landed worth flagging.

We added [deep research examples](/cookbook/deep-research) to the cookbook — full agent workflows you can fork and run. And the Files API docs got a long-overdue scrub: a few of the example endpoints and SDK calls were just wrong.

### ⭐ New

*   [Deep research with Claude Agent SDK subagents](/cookbook/deep-research) in the cookbook — a lead orchestrator dispatches parallel researcher subagents, each driving its own Steel browser, and synthesizes findings into a cited Markdown report. Source on GitHub: [TS](https://github.com/steel-dev/steel-cookbook/tree/main/examples/deep-research-ts) · [Python](https://github.com/steel-dev/steel-cookbook/tree/main/examples/deep-research-py).

### 🔧 Improvements

*   Hermesforge Screenshot API added to [awesome-web-agents](https://github.com/steel-dev/awesome-web-agents).

### 🐛 Bug Fixes

*   Files API docs corrections. Upload endpoints don't have a `/upload` suffix — it's `POST /v1/sessions/{id}/files` and `POST /v1/files`. Session archive is `GET /v1/sessions/{id}/files.zip`. List responses come back as `{ data: [...] }`. The SDK method is `client.sessions.files.downloadArchive(...)`, and global file uploads return `path`, not `id`. If the old examples sent you to a 404, sorry about that.