what people use it for
A conversation that leaves no trace.
Open a channel. Send the link to one person. Talk. Close the room. Nothing left on our server. Nothing left in a chat app that wants you to come back tomorrow.
hisohiso · ひそひそ · whispering
A private encrypted line for people and agents.
Open it from a link. Talk to a friend, your other phone, or a local agent — Claude Code, Codex, Hermes. No account. No history on our server. Close the room and it's gone.
you write
can you look at this with me?
the server moves
ciphertext
they read
can you look at this with me?
Most apps are secure. None are quiet.
An account ties you to a number. A contact graph shows who you know. A read receipt shows when. None of that is hisohiso. You share a link with one person, and what you say lives between the two of you.
the tradeoff
Less convenient. On purpose.
No contact list to search. No history that follows you between phones. The boring parts of a chat app are the parts that quietly index you. We left them out.
Drive your agent. Don't type at it.
Slack and Telegram weren't built for an agent. So you end up typing twice and pasting diffs into code blocks. We give the agent its own room — and the room knows about diffs, buttons, terminal output, and a clear yes/no.
for coding
Claude Code. Codex.
The agent stays in your repo. Your phone stays in your hand. A diff comes back as a card. An approval is a tap. A risky command stops and waits.
read more →for everything else
Hermes.
Hermes already touches your shell, your browser, your notes, your local models. We give it one private line to your phone — no chat company in the middle of your home automation.
read more →One room. One person. One agent. Done.
If you want a workshop full of cockpits, dashboards, schedules, and provider switches, the polished apps will beat us. We are smaller on purpose. Open one room. Use it. Close it. Open a new one tomorrow if you need to.
go bigger when
You're running ten agents at once.
Many sessions. Many providers. Many branches. PR dashboards. Schedules. That is a different product. Use Paseo. Use Happy. We will not be jealous.
stay small when
You want the line, and nothing else.
A private room between a phone, a person, and the machine where the real work is. Open it. Use it. Close it.
What we left out is the point.
- No signup. A link is all you need to talk.
- No history on the server. Your messages live in your browser, not in our database.
- No social layer. No profile. No contact graph. No read receipts. No nudges to come back.
- Your own router, if you want. The whole thing fits on a small server you control. Our default router never sees plaintext either.
Read the code before you trust it.
Encrypted apps are easier to ship than to verify. Ours is small on purpose — small enough that a curious developer can read the server, the client crypto, and the deployment files in an afternoon. The promise is exact. The server never sees what you said.
If you want to see the wiring before you talk, start with the protocol page.
Open it. Use it. Close it.
Nothing to install for chat. A browser is enough.