• 2 min read
Libretto launches Browser Tools SDK for agent browsers
Libretto’s new Browser Tools SDK gives agents six browser tools built on Playwright, with AI SDK and Pi adapters and an MIT license.
Image: Hacker News
Libretto has launched Browser Tools SDK, a package designed to give agents access to a real browser through a small set of tools built on Playwright. The company says the SDK lets agents open a browser, read pages, and take actions while keeping the tool surface limited.
The pitch is straightforward: six tools handle browser access, but Libretto says most tasks rely on just two of them — browser_snapshot to read a page and browser_exec to run Playwright code. The workflow is described as inspect → decide → act.
Libretto also claims the SDK delivers 55% lower cost than alternatives on complex pages, though the source does not name the products used for comparison.
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Current integrations include built-in adapters for AI SDK and Pi, while the base tools are framework-neutral for teams that want to connect them to their own agent loop. Libretto says more frameworks are coming.
Supported browser options include:
- Chromium running locally through LocalBrowserProvider
- Built-in providers for Libretto Cloud, Browserbase, Kernel, and Steel
The company says Browser Tools SDK does not replace Playwright. Instead, it gives agents a narrower interface while still executing browser_exec code through the Playwright API.
The package is available now under the MIT license in the Libretto repository. Installation is a single command:
- npm i libretto-browser-tools
Libretto is positioning the SDK as a way to add browser automation to an existing model and agent framework without changing the rest of the stack.
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Tomas lives in the terminal. He covers chips, laptops, and operating systems with a focus on performance and efficiency. He reads kernel changelogs the way other people read fiction, and he's always on the hunt for the perfect mechanical keyboard switch. If it processes data, Tomas has an opinion on it.
via Hacker News
