Libretto packages six Playwright tools to reduce browser-agent overhead
The YC duo turned the integration layer from a stalled healthcare product into an open-source browser harness for coding agents.
By Ryan Merket · Published
Primary source: Libretto
Why it matters
Libretto is turning hard-won healthcare integration work into infrastructure for AI agents, betting that compact snapshots and explicit Playwright code can lower costs without hiding browser behavior.
Michael Kronovet and Tanishq Kancharla, the founders of Libretto, built Browser Tools SDK around six tools for reading and controlling real browsers through Playwright. Their bet is that agents can complete web tasks with fewer tokens and less runtime machinery when the model receives a compact page representation and writes the Playwright code for each action.…
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