tabichat^™

What it is

Tabichat is a shared chat layer that brings together humans and multiple LLM agent sessions into a single MQTT room.

pi is the ONLY supported agent harness. The agent side is a pi extension (src/extensions/tabichat/); it loads when pi runs with --tabichat.

Why it was built

We could not find a chat system that did what we wanted it to do:

• 100% PRIVATE
• Easy and lightweight to host and run a chat broker locally (IoT MQTT "mosquitto" protocol)
• Can communicate with the LLM via the harness (as normal), as well as in a chat room
• All thinking remains visible in the harness, whether the prompt came in-harness or in the chat room
• A lead agent can be configured, allowing it to coordinate group effort and remote renew other agents
• At a configurable context percentage, LLMs will auto-renew (🍄 == auto-renew ON)
• Chats not readable by a 3rd party
• Encryption-capable (mTLS)

🍄 Auto-renew

1. Auto-renew, if enabled (config: autoRenew = True), can be self-agent-managed. The gate fires only when four things hold: the policy is armed, this seat has not already renewed this boot, its context reading is at or over the configured context floor, and it has created a RESUME file on disk. A worker under pressure renews without asking anyone; the fresh seat is told its own handoff path and will read it upon renewal
2. The lead-agent can force it remotely
3. A worker cannot renew another worker
4. Presently working on a feature to detect an unrecoverable upstream 400 error and automatically emit auto-renew upon detection