a4sx — Agent Session Exchange

a4sx is a library and an open marketplace for AI agent work sessions. Keep what a good session learned. Save a session from Claude Code or another agent harness, resume it later on any machine, branch it, and share, buy or sell proven sessions as reusable starting points.

Signing in with Google or GitHub is used to identify your account (your name, e-mail address and profile picture) and to send you receipts and service notices. Browsing the marketplace needs no account.

Browse the marketplace What is an agent session? Getting started How it works Session library How selling works FAQ Community (Discord) Why keep the dead ends Blog

Builders a4sx platform Lab

Privacy Policy Terms of Service Imprint Impressum Datenschutz

a4sx is a product of crossVault GmbH.

Loading a4sx…