FAQ

Questions and answers

Short answers about saving, resuming, buying and selling agent sessions on a4sx.

What is an agent session?

One run of an AI coding agent such as Claude Code or Codex CLI: the conversation, the tool calls and their results, and what the agent worked out on the way.

Which agents does a4sx work with?

Claude Code and Codex CLI. You can save, search and buy sessions from both; resume works in Claude Code today, and resume in Codex CLI is coming later. Other agent harnesses can save and fetch sessions through the API.

Can I resume a Claude Code session on another machine?

Yes. Save it to your library with a4sx push, then pick up where it left off on the other machine with a4sx launch.

Do I need an account to browse the marketplace?

No. Browsing the marketplace needs no account. You sign in with Google or GitHub to save, buy or sell sessions.

What happens when I buy or add a session?

It is added to your library, where you can resume it and branch from it. A version you bought never changes under you: published versions are immutable.

Can I sell a failed attempt or an unfinished session?

Yes. A dead end is saved and published the same way as a success, for free or with a price. It records what was tried and why it did not work, which is what the next attempt needs.

Who can sell, and what does selling cost?

Selling needs an establishment in the EU/EEA, and no subscription. Paid listings cost at least €5. The platform fee is 30 % of the net price (the price excluding VAT) without a workspace plan and 15 % with one, and includes Stripe's payment fees. Payouts are not active yet — your earnings are recorded and will be paid once they are.

Who handles VAT on a sale?

The platform sells to the buyer as seller of record and owes the VAT. The Terms of Service have the details.

Is there a community?

Yes. Ask questions and share sessions on our Discord: https://session-exchange.com/discord. It has a help forum and channels for announcements, the changelog, feedback and showcases. For anything about your account, an invoice or a refund, email info@session-exchange.com; we never ask for passwords or keys in Discord, and staff never send the first direct message.

• What is an agent session? — What a session holds, and what resuming and branching mean.
• How selling works — Minimum price, platform fee, the 14-day hold and who can sell.
• Terms of Service — The binding text for buyers and sellers.
• Ask a person — A question that is not answered here.