steel-dev/steel-browser is an open-source API that manages browser sessions and processes so AI apps and agents can interact with the web. The GitHub repository lists the latest release as v0.5.4-beta, but the provided information does not say what changed in that version. The repository is written in TypeScript and uses the Apache-2.0 license.
The core is session management that keeps browser state and cookies. It supports CDP-based automation and provides request logs and a session inspection screen so browser behavior can be checked. You can control the browser with Puppeteer, Playwright, or Selenium, and it also supports proxy management, Chrome extensions, and session debugging. The README also lists converting pages to Markdown or PDF and taking screenshots. In other words, it is a project that aims to cover not just browser control but also session operations and result extraction in a single API.
However, the provided FACTS do not include a changelog for v0.5.4-beta, so it is impossible to judge how this release changes the existing features. The scope of the features is confirmed in the README and the project description, but no comparison data backing performance or real-world production suitability was provided. Whether to adopt this release should therefore be decided after separately checking the changes in each version and the operational conditions that are required.