Chatmux MCP Server

Local-first MCP server for your own LINE and Telegram chats. Data stays on your machine.

Local serverstdioPython

What is the Chatmux MCP server?

Connect Chatmux to Claude, Cursor or any other MCP client and it stops being a tab you switch to. Local-first MCP server for your own LINE and Telegram chats. Data stays on your machine. The chatmux mcp server is what makes that connection.

What the server does

Local-first personal chat data layer daemon. Connects IM platforms (v0.1: LINE) via child-process adapters, stores messages to JSONL + SQLite/FTS5, exposes MCP tools for AI clients.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • list_chats — List chats with last message preview, search, pagination
  • read_messages — Read messages from a chat, paginated by timestamp
  • read_events — Tail the event log from an opaque cursor — resumable, survives backfill reordering, and re-delivers a message when it is edited or retracted
  • search_messages — Full-text search (CJK supported via FTS5 trigram + LIKE fallback)
  • send_message — Send message through SafetyRail (rate-limited, error-tracked)
  • get_media — Local file path for a message's image or sticker; downloads and caches on first call
  • probe_latest — Diagnostic, read-only: ask the adapter for a chat's newest N messages without landing them
  • get_status — System status: adapter connection + storage stats

Credentials and setup notes

Configuration is passed through the environment: CHATMUX_MCP_HOST. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Installation

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.

Where it fits

This sits in the team communication group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Chatmux's toolset — list_chats, read_messages, read_events and 5 more — is a fair guide to whether it matches your workflow. It is maintained by echoedinvoker; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Chatmux's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
list_chatsList chats with last message preview, search, pagination
read_messagesRead messages from a chat, paginated by timestamp
read_eventsTail the event log from an opaque cursor — resumable, survives backfill reordering, and re-delivers a message when it is edited or retracted
search_messagesFull-text search (CJK supported via FTS5 trigram + LIKE fallback)
send_messageSend message through SafetyRail (rate-limited, error-tracked)
get_mediaLocal file path for a message's image or sticker; downloads and caches on first call
probe_latestDiagnostic, read-only: ask the adapter for a chat's newest N messages without landing them
get_statusSystem status: adapter connection + storage stats

Configuration

VariableDescriptionRequired
CHATMUX_MCP_HOSTEndpoint or connection string the server talks to.Optional

Example prompts to try

  • Use Chatmux to list chats.
  • Use Chatmux to read messages.
  • Use Chatmux to read events.

Frequently asked questions

It connects Chatmux to MCP-compatible AI assistants such as Claude and Cursor, exposing 8 tools (list_chats, read_messages, read_events, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Chatmux directly.