electrical_services

Mattermost MCP Server — Hosted Api Connectors Integration

MCP Server language Hosted language Public

Open-source team messaging via Mattermost — send messages, manage channels, list users, post to teams.

@aerostack verified

• v0.1.0 • MIT • Updated Jun 29, 2026

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Use with AI AssistantsMCP

Connect Claude, Cursor, or any MCP-compatible client — then call tools directly

① Add This MCP Server

Paste into your AI client config — then all its tools are available instantly.

.claude/mcp.json

{
  "mcpServers": {
    "mattermost": {
      "url": "https://mcp.aerostack.dev/s/aerostack/mcp-mattermost",
      "headers": {
        "Authorization": "Bearer YOUR_AEROSTACK_TOKEN"
      }
    }
  }
}

Replace YOUR_AEROSTACK_TOKEN with your API token from the dashboard.

② Call a Tool

Ask your AI assistant to call a specific tool, or send raw JSON-RPC:

+3 more

Natural Language Prompt

“Use the _ping tool to verify mattermost credentials by calling a lightweight read endpoint. used internally by aerostack to validate credentials”

Using a Workspace?

Add this MCP to your Workspace — your team shares one token, secrets are stored securely, and every AI agent in the workspace can call it without per-user setup.

add_circleAdd to Workspace

description Overview

mcp-mattermost — Mattermost MCP Server

Open-source team messaging via Mattermost — send messages, manage channels, list users, post to teams.

Live endpoint: https://mcp.aerostack.dev/s/aerostack/mcp-mattermost

What You Can Do

This MCP server gives AI agents access to Mattermost via 8 tools. Connect it to any Aerostack workspace and your agents can interact with Mattermost directly.

Available Tools

Tool	Description
`get_me`	Get the current user profile including id, username, email, and roles.
`list_teams`	List all teams the current user is a member of.
`list_channels`	List channels in a team that the current user is a member of.
`get_channel`	Get channel details by channel ID.
`post_message`	Post a message to a channel.
`list_posts`	List recent posts in a channel.
`get_post`	Get a specific post by post ID.
`create_channel`	Create a new channel in a team. type: O=public, P=private.

Configuration

Variable	Required	Description
`MATTERMOST_URL`	Yes	See provider documentation
`MATTERMOST_TOKEN`	Yes	Personal access token or service token from the provider

Quick Start

Add to Aerostack Workspace

Go to aerostack.dev → Your Project → MCPs
Search for "Mattermost" and click Add to Workspace

Add the following secrets under Project → Secrets:

MATTERMOST_URL
MATTERMOST_TOKEN

Once added, every AI agent in your workspace can use Mattermost tools automatically.

Direct API Call

curl -X POST https://mcp.aerostack.dev/s/aerostack/mcp-mattermost \
  -H 'Content-Type: application/json' \
  -H 'X-Mcp-Secret-MATTERMOST-URL: your-mattermost-url' \
  -H 'X-Mcp-Secret-MATTERMOST-TOKEN: your-mattermost-token' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_me","arguments":{}}}'

License

MIT

terminal Tools (9)

Available tools on this MCP server. Each tool can be called directly from any AI agent.

terminal

_ping #1

Verify Mattermost credentials by calling a lightweight read endpoint. Used internally by Aerostack to validate credentials.

terminal

get_me #2

Get the current user profile including id, username, email, and roles.

terminal

list_teams #3

List all teams the current user is a member of.

terminal

list_channels #4

List channels in a team that the current user is a member of.

terminal

get_channel #5

Get channel details by channel ID.

terminal

post_message #6

Post a message to a channel.

terminal

list_posts #7

List recent posts in a channel.

terminal

get_post #8

Get a specific post by post ID.

terminal

create_channel #9

Create a new channel in a team. type: O=public, P=private.

Details

upgrade Version 0.1.0

gavel License MIT

wifi Transport streamable-http

lock Access Public

category Category API Connectors

terminal Tools 9

language Live Endpoint

https://mcp.aerostack.dev/s/aerostack/mcp-mattermost

Sub-50ms globally · Zero cold start

Publisher

@aerostack verified

Pre-built functions for the most common MCP tool patterns. Clone, extend, and deploy.

Frequently asked questions

What is the Mattermost MCP server and what can it do? +

The Mattermost MCP server is hosted on Aerostack and exposes these tools to your AI agent: `_ping`, `get_me`, `list_teams`, `list_channels`, `get_channel`. You get one hosted URL — no self-hosting — that works from Claude, Cursor, ChatGPT, Gemini, VS Code, or any MCP-compatible client, and you can share it with your team or combine it with other MCP servers in a workspace.

Is the Mattermost MCP server hosted, or do I have to run it myself? +

It's hosted on Aerostack's edge infrastructure — you don't deploy or maintain anything. Add it to a workspace and you get one authenticated URL, with secrets encrypted, that any AI agent or editor can connect to. Use it solo or share the same URL across your whole team.

Which AI agents and editors can use the Mattermost MCP server? +

Any MCP client: Claude and Claude Code, Cursor, ChatGPT, Gemini, Windsurf, Cline, VS Code, and custom agents. Because it's one hosted URL, the same Mattermost MCP server works everywhere — and you can compose it with other MCP servers, skills, and functions behind a single workspace URL.

How do I install the Mattermost MCP server in Claude Desktop? +

Add the following to your Claude Desktop config (`claude_desktop_config.json`): ```json { "mcpServers": { "@aerostack/mcp-mattermost": { "command": "npx", "args": ["-y", "@aerostack/@aerostack/mcp-mattermost"] } } } ``` Then restart Claude Desktop and the tools will appear automatically.

How do I use the Mattermost MCP server in Cursor? +

In Cursor, open **Settings → MCP** and add: ```json { "name": "@aerostack/mcp-mattermost", "command": "npx", "args": ["-y", "@aerostack/@aerostack/mcp-mattermost"] } ``` Save and reload Cursor. The MCP tools will be available in Agent mode.

Does Mattermost MCP require authentication? +

Yes. Mattermost requires authentication. Check the MCP's documentation for the required credentials.

Mattermost MCP Server — Hosted Api Connectors Integration

description Overview

mcp-mattermost — Mattermost MCP Server

What You Can Do

Available Tools

Configuration

Quick Start

Add to Aerostack Workspace

Direct API Call

License

terminal Tools (9)

Details

Publisher

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