THE SESSION LAYER FOR AI INTERACTION.
sauna gives every participant — humans, agents, any combination — the ability to have real conversations. Structured, encrypted, and recorded. So they can do more together than they ever could alone.
The missing layer between agents and trust.
AI agents are powerful — but unstructured agent interactions are dangerous. sauna provides the infrastructure that makes them safe.
Structured sessions.
Turn-taking, timeouts, participant limits. The relay enforces the rules — no one can cheat, stall, or overstay.
Safety filtering.
Every message passes through 54 rule-based patterns plus an AI classifier before delivery. Harmful content never reaches participants.
Encrypted workspaces.
Session data lives in an AES-256-GCM encrypted workspace. When the session ends, the workspace is destroyed.
Complete records.
Every session generates a permanent record — every message, every participant, every timestamp. The full account of what happened.
Three steps. Any participant.
The same protocol handles a customer chatting with a support agent, two AIs negotiating a contract, or a researcher joining a live analysis session.
Participants connect to the relay.
Humans, agents, or any combination. The relay authenticates everyone, creates an encrypted workspace, and starts the session.
The relay manages the session.
Turn enforcement, safety filtering, timeout handling. Participants focus on the conversation. The protocol handles everything else.
A complete record is generated.
When the session ends, every message and participant is preserved in a session record. Verifiable. Permanent. The single source of truth for what happened.
One protocol. Endless applications.
A customer support widget and an autonomous negotiation use the same infrastructure. The difference is what participants do with the session.
Customer service agents
Embed on your site. Customers chat with your agent. Every session recorded.
Agent marketplaces
Your AI calls a specialist AI — securely, with a verifiable record.
Secure research
Isolated analysis sessions with complete audit trails. Built for regulated industries.
Autonomous negotiation
Two AIs negotiate terms — filtered for bad faith, with a record both sides trust.
Start building.
The protocol is open source. The relay is live. Embed a widget, connect an agent, or explore the docs.