Can I use Mattermost as a CLI?

Yes. KosmoKrator exposes a Mattermost CLI through kosmo integrations:call and the provider shortcut command. Commands can return JSON for scripts, CI, and coding agents.

Can I expose Mattermost through MCP?

Yes. The KosmoKrator MCP gateway can expose selected Mattermost tools to clients such as Claude Code, Cursor, Codex, and other MCP-compatible tools.

Where are Mattermost credentials stored?

Mattermost credentials are configured in KosmoKrator's local integration settings and reused by CLI, Lua, and MCP gateway surfaces.

Can I deny write access for Mattermost MCP tools?

Yes. Start the gateway with --write=deny for read-only clients, or use ask/allow only for trusted workspaces.

productivity

Mattermost CLI for AI Agents

Use the Mattermost CLI from KosmoKrator to call Mattermost tools headlessly, return JSON, inspect schemas, and automate workflows from coding agents, scripts, and CI.

Mattermost CLI Setup

Mattermost can be configured headlessly with `kosmokrator integrations:configure mattermost`.

Install, configure, and verify

# Install KosmoKrator first if it is not available on PATH.
curl -fsSL https://raw.githubusercontent.com/OpenCompanyApp/kosmokrator/main/install.sh | bash

# Configure and verify this integration.
kosmokrator integrations:configure mattermost --enable --read allow --write ask --json
kosmokrator integrations:doctor mattermost --json
kosmokrator integrations:status --json

Credentials

Authentication type: Bearer token bearer_token. Configure credentials once, then reuse the same stored profile from scripts, coding CLIs, Lua, and MCP.

No credentials are required.

Command Patterns

The generic command is stable across every integration. The provider shortcut is shorter for humans.

Generic CLI call

kosmo integrations:call mattermost.mattermost_api_get '{}' --json

Provider shortcut

kosmo integrations:mattermost mattermost_api_get '{}' --json

Discovery

These commands return structured output for coding agents that need to inspect capabilities before choosing a function.

Discovery commands

kosmo integrations:docs mattermost --json
kosmo integrations:docs mattermost.mattermost_api_get --json
kosmo integrations:schema mattermost.mattermost_api_get --json
kosmo integrations:search "Mattermost" --json
kosmo integrations:list --json

Automation Contexts

The same configured command surface works in these environments. The command does not change unless the host wrapper, credentials, or permissions change.

CI Run integration calls from CI jobs with JSON output, explicit credentials, and predictable exit status. Cron Jobs Schedule repeatable integration workflows from cron while keeping credentials in KosmoKrator config. Shell Scripts Call integration functions from shell scripts with stable JSON input and output. Headless Automation Use KosmoKrator as a non-interactive integration runtime for local automations and wrappers. Coding Agents Let coding agents discover schemas and execute integration functions through CLI commands or MCP.

CLI Functions

Every function below can be called headlessly. Commands are highlighted, copyable, and scroll horizontally when payloads are long.

`mattermost.mattermost_api_get`

Execute a raw Mattermost API GET request.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_api_get '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_api_get '{}' --json

`mattermost.mattermost_api_post`

Execute a raw Mattermost API POST request.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_api_post '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_api_post '{}' --json

`mattermost.mattermost_api_put`

Execute a raw Mattermost API PUT request.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_api_put '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_api_put '{}' --json

`mattermost.mattermost_api_patch`

Execute a raw Mattermost API PATCH request.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_api_patch '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_api_patch '{}' --json

`mattermost.mattermost_api_delete`

Execute a raw Mattermost API DELETE request.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_api_delete '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_api_delete '{}' --json

`mattermost.mattermost_get_current_user`

Get the profile of the currently authenticated Mattermost user. Returns username, email, display name, roles, and locale.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_get_current_user '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_get_current_user '{}' --json

`mattermost.mattermost_list_users`

List Mattermost users.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_list_users '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_list_users '{}' --json

`mattermost.mattermost_search_users`

Search Mattermost users.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_search_users '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_search_users '{}' --json

`mattermost.mattermost_get_user`

Get a Mattermost user by ID.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_get_user '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_get_user '{}' --json

`mattermost.mattermost_get_user_by_username`

Get a Mattermost user by username.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_get_user_by_username '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_get_user_by_username '{}' --json

`mattermost.mattermost_create_user`

Create a Mattermost user.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_create_user '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_create_user '{}' --json

`mattermost.mattermost_patch_user`

Patch a Mattermost user.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_patch_user '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_patch_user '{}' --json

`mattermost.mattermost_deactivate_user`

Deactivate or activate a Mattermost user.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_deactivate_user '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_deactivate_user '{}' --json

`mattermost.mattermost_list_teams`

List teams the current user belongs to in Mattermost. Returns team IDs, names, display names, and types. Use this to discover available teams before working with channels.

Read read

Parameters: page, per_page

Generic call

kosmo integrations:call mattermost.mattermost_list_teams '{"page":1,"per_page":1}' --json

Shortcut

kosmo integrations:mattermost mattermost_list_teams '{"page":1,"per_page":1}' --json

`mattermost.mattermost_get_team`

Get a Mattermost team.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_get_team '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_get_team '{}' --json

`mattermost.mattermost_create_team`

Create a Mattermost team.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_create_team '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_create_team '{}' --json

`mattermost.mattermost_patch_team`

Patch a Mattermost team.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_patch_team '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_patch_team '{}' --json

`mattermost.mattermost_list_team_members`

List Mattermost team members.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_list_team_members '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_list_team_members '{}' --json

`mattermost.mattermost_add_team_member`

Add a user to a Mattermost team.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_add_team_member '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_add_team_member '{}' --json

`mattermost.mattermost_remove_team_member`

Remove a user from a Mattermost team.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_remove_team_member '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_remove_team_member '{}' --json

`mattermost.mattermost_list_channels`

List channels the current user belongs to in Mattermost. Returns channel IDs, names, types, and team associations. Use this to discover available channels before posting messages or reading posts.

Read read

Parameters: page, per_page

Generic call

kosmo integrations:call mattermost.mattermost_list_channels '{"page":1,"per_page":1}' --json

Shortcut

kosmo integrations:mattermost mattermost_list_channels '{"page":1,"per_page":1}' --json

`mattermost.mattermost_list_team_channels`

List channels in a Mattermost team.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_list_team_channels '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_list_team_channels '{}' --json

`mattermost.mattermost_search_channels`

Search channels in a Mattermost team.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_search_channels '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_search_channels '{}' --json

`mattermost.mattermost_create_channel`

Create a Mattermost channel.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_create_channel '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_create_channel '{}' --json

`mattermost.mattermost_get_channel`

Get details of a specific Mattermost channel by ID. Returns channel name, display name, type, header, purpose, and member counts.

Read read

Parameters: channel_id

Generic call

kosmo integrations:call mattermost.mattermost_get_channel '{"channel_id":"example_channel_id"}' --json

Shortcut

kosmo integrations:mattermost mattermost_get_channel '{"channel_id":"example_channel_id"}' --json

`mattermost.mattermost_patch_channel`

Patch a Mattermost channel.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_patch_channel '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_patch_channel '{}' --json

`mattermost.mattermost_delete_channel`

Delete a Mattermost channel.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_delete_channel '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_delete_channel '{}' --json

`mattermost.mattermost_list_channel_members`

List Mattermost channel members.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_list_channel_members '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_list_channel_members '{}' --json

`mattermost.mattermost_add_channel_member`

Add a user to a Mattermost channel.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_add_channel_member '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_add_channel_member '{}' --json

`mattermost.mattermost_remove_channel_member`

Remove a user from a Mattermost channel.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_remove_channel_member '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_remove_channel_member '{}' --json

`mattermost.mattermost_create_post`

Post a message to a Mattermost channel. Provide the channel_id and the message text. Returns the created post with its ID and timestamp.

Write write

Parameters: channel_id, message

Generic call

kosmo integrations:call mattermost.mattermost_create_post '{"channel_id":"example_channel_id","message":"example_message"}' --json

Shortcut

kosmo integrations:mattermost mattermost_create_post '{"channel_id":"example_channel_id","message":"example_message"}' --json

`mattermost.mattermost_list_posts`

List posts in a Mattermost channel. Returns post IDs, messages, author info, and timestamps. Use page and per_page for pagination.

Read read

Parameters: channel_id, page, per_page

Generic call

kosmo integrations:call mattermost.mattermost_list_posts '{"channel_id":"example_channel_id","page":1,"per_page":1}' --json

Shortcut

kosmo integrations:mattermost mattermost_list_posts '{"channel_id":"example_channel_id","page":1,"per_page":1}' --json

`mattermost.mattermost_get_post`

Get a specific Mattermost post by ID. Returns the full post including message content, author, channel, and timestamps.

Read read

Parameters: post_id

Generic call

kosmo integrations:call mattermost.mattermost_get_post '{"post_id":"example_post_id"}' --json

Shortcut

kosmo integrations:mattermost mattermost_get_post '{"post_id":"example_post_id"}' --json

`mattermost.mattermost_patch_post`

Patch a Mattermost post.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_patch_post '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_patch_post '{}' --json

`mattermost.mattermost_delete_post`

Delete a Mattermost post.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_delete_post '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_delete_post '{}' --json

`mattermost.mattermost_search_posts`

Search posts in a Mattermost team.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_search_posts '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_search_posts '{}' --json

`mattermost.mattermost_get_post_thread`

Get a Mattermost post thread.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_get_post_thread '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_get_post_thread '{}' --json

`mattermost.mattermost_list_post_reactions`

List reactions for a Mattermost post.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_list_post_reactions '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_list_post_reactions '{}' --json

`mattermost.mattermost_create_reaction`

Add a reaction to a Mattermost post.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_create_reaction '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_create_reaction '{}' --json

`mattermost.mattermost_delete_reaction`

Delete a Mattermost reaction.

Write write

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_delete_reaction '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_delete_reaction '{}' --json

`mattermost.mattermost_get_file_info`

Get Mattermost file metadata.

Read read

Parameters: none

Generic call

kosmo integrations:call mattermost.mattermost_get_file_info '{}' --json

Shortcut

kosmo integrations:mattermost mattermost_get_file_info '{}' --json

Function Schemas

Use these parameter tables when building CLI payloads without calling integrations:schema first.

mattermost.mattermost_api_get 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_api_get --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_api_post 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_api_post --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_api_put 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_api_put --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_api_patch 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_api_patch --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_api_delete 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_api_delete --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_get_current_user 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_get_current_user --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_list_users 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_list_users --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_search_users 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_search_users --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_get_user 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_get_user --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_get_user_by_username 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_get_user_by_username --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_create_user 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_create_user --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_patch_user 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_patch_user --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_deactivate_user 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_deactivate_user --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_list_teams 2 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_list_teams --json

Parameter	Type	Required	Description
`page`	integer	no	Page number (0-indexed). Default: 0.
`per_page`	integer	no	Number of teams per page. Default: 60.

mattermost.mattermost_get_team 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_get_team --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_create_team 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_create_team --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_patch_team 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_patch_team --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_list_team_members 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_list_team_members --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_add_team_member 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_add_team_member --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_remove_team_member 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_remove_team_member --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_list_channels 2 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_list_channels --json

Parameter	Type	Required	Description
`page`	integer	no	Page number (0-indexed). Default: 0.
`per_page`	integer	no	Number of channels per page. Default: 60.

mattermost.mattermost_list_team_channels 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_list_team_channels --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_search_channels 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_search_channels --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_create_channel 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_create_channel --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_get_channel 1 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_get_channel --json

Parameter	Type	Required	Description
`channel_id`	string	yes	The channel ID.

mattermost.mattermost_patch_channel 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_patch_channel --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_delete_channel 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_delete_channel --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_list_channel_members 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_list_channel_members --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_add_channel_member 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_add_channel_member --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_remove_channel_member 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_remove_channel_member --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_create_post 2 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_create_post --json

Parameter	Type	Required	Description
`channel_id`	string	yes	The channel ID to post the message in.
`message`	string	yes	The message text to post. Supports Markdown formatting.

mattermost.mattermost_list_posts 3 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_list_posts --json

Parameter	Type	Required	Description
`channel_id`	string	yes	The channel ID to list posts from.
`page`	integer	no	Page number (0-indexed). Default: 0.
`per_page`	integer	no	Number of posts per page. Default: 60.

mattermost.mattermost_get_post 1 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_get_post --json

Parameter	Type	Required	Description
`post_id`	string	yes	The post ID.

mattermost.mattermost_patch_post 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_patch_post --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_delete_post 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_delete_post --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_search_posts 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_search_posts --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_get_post_thread 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_get_post_thread --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_list_post_reactions 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_list_post_reactions --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_create_reaction 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_create_reaction --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_delete_reaction 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_delete_reaction --json

Parameter	Type	Required	Description
No parameters.

mattermost.mattermost_get_file_info 0 parameters

Schema command

kosmo integrations:schema mattermost.mattermost_get_file_info --json

Parameter	Type	Required	Description
No parameters.

Permissions

Headless calls still follow the integration read/write permission policy. Configure read/write defaults with integrations:configure. Add --force only for trusted automation that should bypass that policy.