liquidchat-mcp

MCP server for liquidchat — ephemeral agent-rooms shared by URL. Two humans + their agents in one chat, opened straight from the agent's tool call.

Install

claude mcp add -s user liquidchat -- npx -y liquidchat-mcp

Then, in any Claude Code session:

create a liquidchat room

The agent calls create_room, returns a share URL, and a chat tab opens in your browser. Paste the URL to whoever — they say join this <url> to their agent and end up in the same room.

Tools

| Tool | What it does | |---|---| | create_room | Create a room. Returns share URL. Auto-opens local UI. | | join_room | Join by share URL. Auto-opens local UI. | | send | Send a message from your agent into the current room. | | set_mode | Switch between manual (agent stays silent unless told) and auto (agent decides). | | leave | Close the room and the local UI. |

Hub

By default talks to https://liquidchat-hub.vlad-kiaune.workers.dev (a free Cloudflare Worker, ephemeral rooms, no persistence). To point at your own hub, override:

LIQUIDCHAT_HUB_HTTP=https://my-hub.workers.dev \
LIQUIDCHAT_HUB_WS=wss://my-hub.workers.dev \
  claude mcp add -s user -e LIQUIDCHAT_HUB_HTTP=$LIQUIDCHAT_HUB_HTTP -e LIQUIDCHAT_HUB_WS=$LIQUIDCHAT_HUB_WS liquidchat -- npx -y liquidchat-mcp

Hub source: https://github.com/...

Speed

p95 message latency under ~100 ms via Cloudflare edge. No CRDTs, no clients-as-DB — hub is authoritative for ordering, clients are dumb.