Libretto

Active

Turn website workflows into reliable APIs

Spring 2025Founded 20252 peopleSan Francisco, CA, USA

libretto.sh ↗See on the Idea Map Healthcare momentum

About

Libretto is an open-source CLI that lets agents turn website workflows into fast, reusable scripts you can deploy The problem: Most browser automation tools work by sending an AI agent to operate a website in real time, like a robot typing and clicking on your behalf. This is slow, expensive, and unpredictable. They rely on fragile DOM parsing that breaks on legacy and complex sites, and you can never fully trust what the agent will do on unintuitive or inconsistent workflows. Our approach: Libretto helps your coding agents generate workflows as actual, readable code during development, not at runtime. Under the hood it combines Playwright with direct in-session network/API calls for reliability and bot detection evasion. It also supports step-through debugging and a read-only mode to prevent accidental data changes while your agent builds and debugs workflows. This makes Libretto cheaper, faster, and easier to maintain, especially for more complex websites and high stakes workflows.

From their website

as of Jun 7, 2026libretto.sh ↗

Developer Tool

Libretto provides a CLI tool that enables coding agents to inspect web pages, reverse-engineer APIs, and build fast, cheap, and reliable automation scripts. It turns website workflows into reliable APIs for automation.

Libretto offers a command-line interface that allows users to inspect web pages, reverse-engineer the APIs used by those pages, and generate automation scripts that leverage those APIs. The result is a more reliable, scalable way to automate website workflows by exposing them as programmable APIs.

Who it’s for: Developers and automation engineers who build or maintain automation scripts and integrations for web-based workflows.

Features

CLI-based workflow inspection
Reverse-engineer website APIs
Build automation scripts from website workflows
Produce fast and reliable automation routines
Cheap automation tooling

Founders · 2

Tanishq KancharlaFounder

Co-founder of Libretto. Product engineer.

LinkedIn ↗X ↗

Michael KronovetFounder

Palantir

Co-founder of Libretto. ML engineer. Formerly led Palantir's work with the US State Department. Learn more about me here: https://michaelkronovet.com

LinkedIn ↗

Launch

Launched on Y Combinator · Nov 2025

View launch post ↗

AI agents that fully automate specialist referrals

The company builds AI agents that automate the entire specialist referral workflow for primary care groups. The launch claims the agents automate referrals across rural West Texas clinics, reducing processing time, shortening wait times for appointments, and decreasing referral kickbacks, with the product targeting primary care networks and related organizations.