Self-hosted Mattermost MCP alternatives
The Mattermost MCP server already installs locally and runs over stdio, so the process and your chat credentials stay on your own machine. Paired with a self-hosted Mattermost instance, both the chat platform and the agent can sit on infrastructure you control. If you are here, you most likely want the same local posture pointed at a different platform.
Every server below runs on your own machine or network: a local stdio command, or a local-HTTP server you operate, with no managed endpoint. The caveat is the usual one. Hosting the server locally keeps the process and tokens on your side, but the messages still travel to each platform's own API when they send.
The 8 best self-hosted alternatives
Powered by Telethon, the Telegram server runs locally and reads chats, manages groups and contacts, and sends or edits messages and media, all from your own process.
Set up Telegram →LINE's official server installs locally and pushes or broadcasts text and flex messages, manages rich menus, and reads profiles. A local broadcast option for a LINE Official Account.
Set up LINE →Pointed at your own Matrix homeserver, this server reads rooms and messages, sends chats, and manages rooms over local HTTP with OAuth, another open chat platform you can run end to end.
Set up Matrix →A local server for Rocket.Chat that reads and posts messages and manages threads, DMs, files, reactions, and pins. The closest fit: another self-hostable chat product you can run end to end.
Set up Rocket.Chat →- TwilioOfficial
Twilio's server runs locally and exposes SMS, voice, Verify, Lookup, and 1,400+ API endpoints. The process stays on your machine; the messages still go out through Twilio.
Set up Twilio → - VonageOfficial
Vonage installs locally and sends SMS, WhatsApp, RCS, and voice while managing numbers and reports. A local multichannel sender for reaching phones rather than chat channels.
Set up Vonage → - Discord MCPCommunity
This community server runs a Discord bot from a local process across messages, channels, forums, roles, and webhooks. You hold the bot token; Discord handles delivery.
Set up Discord MCP → Run it yourself and the community Slack server reads history, DMs, and search over stdio with no workspace bot to install. The local option when the conversation lives in Slack.
Set up Slack →
How to choose
Mattermost is already self-hostable, so the question is which platform you point a local process at. Rocket.Chat is the closest peer, with a self-run Matrix homeserver close behind as another open chat platform. Telegram, Discord, and Slack swap the network; Twilio and Vonage reach phones; LINE broadcasts to an audience. The caveat holds throughout: local hosting keeps the process and tokens on your side, but messages still travel to each platform's API.
FAQ
- Can the Mattermost MCP server be self-hosted?
- Yes. The Mattermost server installs locally and runs over stdio, so the process and your credentials stay on your own machine. Paired with a self-hosted Mattermost instance, the whole stack can sit on your infrastructure. The alternatives here run locally too, either over stdio or as a local-HTTP server you operate.
- Does self-hosting keep messages on my own infrastructure?
- It keeps the server process and credentials local, which is usually the point for audit and access control. The messages themselves still travel to each platform's API, Telegram, Twilio, and the rest, so delivery happens off your machine. A Matrix or Rocket.Chat instance you host yourself keeps the chat data closer.