Show HN introduces Browser Tools SDK, an open-source TypeScript package designed to provide AI agents with a reliable method for controlling real browsers. This SDK aims to be a more context and cost-efficient browser harness compared to existing solutions.

In benchmarks against agent-browser, playwright-cli, and dev-browser using GPT 5.6 Sol, Browser Tools SDK achieved a tie for the best pass rate at 24/26 tasks. It also demonstrated significant cost savings, coming in approximately 55% cheaper per successful task than the next alternative and using fewer tokens. The SDK focuses on two primary tools: `browser_snapshot` for efficient page overviews and `browser_exec` for executing raw Playwright code.

The Browser Tools SDK offers out-of-the-box compatibility with AI SDK and Pi, with plans for more framework integrations. It supports various browser infrastructure providers, including Libretto Cloud, Kernel, and Browserbase, as well as a `LocalBrowserProvider` for running Chromium locally. The SDK is MIT licensed, with documentation and a Discord community available for users.