mm-mcp
An independent MCP server for Mattermost that allows AI agents to read channels, threads, and files, and perform write operations like posting, replying, and editing only with user confirmation. It supports personal access tokens, bot tokens, or login via single sign-on, and uses Mattermost's native Go client for API interactions.
Package and access
Local package with source-attributed installation metadata. Koskamo does not execute packages during review.
What you can do with it
- Read channels, threads, and unread posts
- Search posts, files, people, and channels
- Post, reply, edit, and react to messages
- Manage channel membership and status
Source and maintenance
- Last repository push
- Latest release
- v0.4.1
- Maintenance checked
Packages and installation
Source-provided package data. Koskamo has not executed or live-probed this package.
https://github.com/vriesdemichael/mm-mcp/releases/download/v0.4.1/mm-mcp_0.4.1_windows_arm64.mcpb 0.4.1
{
"version": "0.4.1",
"transport": "stdio",
"fileSha256": "d9658dfac0b7cc8dd5a91c86a07e566a2fe23c0b9ae4943b9191bbb98c42720e",
"identifier": "https://github.com/vriesdemichael/mm-mcp/releases/download/v0.4.1/mm-mcp_0.4.1_windows_arm64.mcpb",
"registryType": "mcpb",
"environmentVariables": [
{
"name": "MM_MCP_ALLOW_WRITES",
"format": "boolean",
"default": "false",
"description": "Offer the tools that post and change things. Your client's own approval of each call decides, and mm-mcp checks what each change others see states before it acts."
},
{
"name": "MM_MCP_CA_FILE",
"format": "filepath",
"description": "A PEM file of certificate authorities to trust beside your system's, for a Mattermost whose certificate your organisation signed itself. Leave it empty otherwise."
},
{
"name": "MM_MCP_DOWNLOAD_DIR",
"format": "filepath",
"description": "Where save_file writes attachments. Leave it empty for your Downloads directory."
},
{
"name": "MM_MCP_ELICITATION_OPT_IN",
"format": "boolean",
"default": "false",
"description": "Your client's own approval of each call decides whether a post or another change others see goes ahead, and mm-mcp checks what each states. Turn this on to have mm-mcp ask you too, through a question your client shows: a convenience where it shows it, not a safeguard, since some clients answer it themselves."
},
{
"name": "MM_MCP_FORCE_HUMAN_IN_THE_LOOP_IN_CLAUDE_CODE",
"format": "boolean",
"default": "false",
"description": "Not with mm-mcp asks as well: marks each tool that changes what others see so that Claude Code asks a person on every call, whatever its permission mode or rules allow. An agent cannot post on its own while it is on."
},
{
"name": "MM_MCP_MARK_AI_GENERATED",
"format": "boolean",
"default": "true",
"description": "Mark every post and edit the model writes with Mattermost's own marker for text written with AI."
},
{
"name": "MM_MCP_POST_FROM_VIEWS",
"format": "boolean",
"default": "true",
"description": "Where your app shows mm-mcp's views, a post the model proposes as your draft can be posted from the view with Post. Off, the draft waits in Mattermost for you to send."
},
{
"name": "MM_MCP_RESOURCE_MAX_MB",
"format": "number",
"default": "10",
"description": "The most one message carrying an attached file as an MCP resource holds, a binary file counted as its base64. MCP sends a resource whole, and a client drops a message past its own limit, 10 MB for clients built on the TypeScript SDK. A larger one is refused, and read_file or save_file reads it instead. 0 is no limit."
},
{
"name": "MM_TOKEN",
"format": "string",
"description": "A personal access token or a bot token. Where those are switched off, leave it empty after logging in once with mm-mcp login --url <address> in a terminal, which keeps your session in the system's credential store."
},
{
"name": "MM_URL",
"format": "string",
"isRequired": true,
"description": "The address you open Mattermost at, such as https://chat.example.com."
}
]
}Tools
Reported by the attributed source; not independently observed by Koskamo.
Maintenance history
Public check and source-refresh events. Editorial and ownership records remain private.
- · repository · passed · metadata changed · updated
- · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown
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