Libretto gives agents a browser harness

Libretto's Browser Tools SDK describes six Playwright-backed tools that let an AI agent open a real browser, read a page, and act inside it. Why it matters: Browser use is where neat agent demos meet messy product state. A narrow harness is easier to inspect than a vague autonomous browser claim: what can the agent see, click, wait for, and report back?

Try this: Before adopting any browser agent layer, list its browser actions, page-read limits, credentials boundary, and replay log; skip it if those are invisible.