a4sx — Agent Session Exchange

a4sx

Save, resume and share your coding-agent sessions.

Save your Claude Code and Codex CLI sessions, resume them on any machine, branch off runs that worked, and share or sell them. Your agent can do all of it; this site is your control panel.

RESUME: Pick up where it left off.

BRANCH: Start new work from a proven base.

SHARE: Build on each other’s sessions.

• Why keep the dead ends — Unfinished sessions and failed attempts carry knowledge you can branch from, share or sell, and it is worth the most now.
• What is an agent session? — What a coding agent's session holds, why it is lost when the work moves on, and what resuming and branching mean.
• How selling your sessions works — What you can sell, the minimum price, the platform fee, when your share becomes payable, and who can sell today.
• Questions and answers — Short answers about saving, resuming, buying and selling agent sessions.

Publish and sell your sessions

• Publish a saved session from your library in a few steps. Your agent can save it for you over MCP; you list it and set the price on the Sell page, or through the API with your own signed-in session. Nothing is published until you sign off.
• Free to publish and sell, with no subscription. The platform fee is 30 % per sale, of the price excluding VAT; a workspace plan has a lower fee. Payouts are not active yet — your earnings are recorded and will be paid once they are.
• Buyers can resume your solved session instead of re-deriving it. Why sessions are worth selling:

• Your agent sessions are worth something: publish and sell them on {brand} — how selling your sessions works
• Novel, recalled or borrowed? OpenAI's math results and the missing transcripts — why the full transcript and its provenance matter
• Everything becomes anything: why we're betting on users, not IP — why we bet on users, not on IP
• Weights on your own disk, and the awkward question of distillation — data, distillation and provenance

How selling works