Can I use Slack as a CLI?

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

Can I expose Slack through MCP?

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

Where are Slack credentials stored?

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

Can I deny write access for Slack MCP tools?

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

productivity

Slack CLI for Cron Jobs

Use the Slack CLI for cron jobs with headless JSON commands, schema discovery, credentials, and permission controls.

25 functions 13 read 12 write API token auth

Submit Slack feedback View package source

Slack CLI for Cron Jobs

Schedule repeatable integration workflows from cron while keeping credentials in KosmoKrator config.

Use the headless CLI from cron when an operation should run without an interactive agent session. The Slack CLI uses the same integration registry as the TUI, Lua runtime, and MCP gateway, but returns predictable command output for automation.

Command Shape

# Slack CLI for Cron Jobs
kosmokrator integrations:configure slack --set bot_token="$SLACK_BOT_TOKEN" --enable --read allow --write ask --json
kosmo integrations:call slack.slack_send_message '{"channel":"example_channel","text":"example_text","blocks":"example_blocks","thread_ts":"example_thread_ts","reply_broadcast":true,"unfurl_links":true,"markdown":true}' --json

Discovery Before Execution

Agents and scripts can inspect Slack docs and schemas before choosing a function.

kosmo integrations:docs slack --json
kosmo integrations:docs slack.slack_send_message --json
kosmo integrations:schema slack.slack_send_message --json
kosmo integrations:search "Slack" --json
kosmo integrations:list --json

Useful Slack CLI Functions

Function	Type	Parameters	Description
`slack.slack_send_message`	Write	channel, text, blocks, thread_ts, reply_broadcast, unfurl_links, markdown	Send a message to a Slack channel or DM. Supports text, blocks, and thread replies.
`slack.slack_update_message`	Write	channel, ts, text, blocks	Update an existing Slack message.
`slack.slack_delete_message`	Write	channel, ts	Delete a message from a Slack channel.
`slack.slack_get_message`	Read	channel, ts, thread_ts	Get a specific message by its timestamp. Optionally fetch a message within a thread.
`slack.slack_search_messages`	Read	query, count, page, sort, sort_dir	Search for messages across all Slack channels and DMs.
`slack.slack_get_permalink`	Read	channel, message_ts	Get a permalink URL for a specific Slack message.
`slack.slack_get_channel_history`	Read	channel, limit, oldest, latest, cursor	Get message history for a Slack channel. Supports pagination with cursors.
`slack.slack_get_thread_replies`	Read	channel, ts, limit, cursor	Get all replies in a Slack message thread.
`slack.slack_list_channels`	Read	types, exclude_archived, limit, cursor	List all Slack channels the bot has access to.
`slack.slack_get_channel`	Read	channel	Get detailed information about a Slack channel.
`slack.slack_create_channel`	Write	name, is_private	Create a new Slack channel.
`slack.slack_set_topic`	Write	channel, topic	Set the topic for a Slack channel.
`slack.slack_set_purpose`	Write	channel, purpose	Set the purpose for a Slack channel.
`slack.slack_archive_channel`	Write	channel	Archive a Slack channel.
`slack.slack_invite_to_channel`	Write	channel, users	Invite one or more users to a Slack channel.
`slack.slack_upload_file`	Write	channel, content, filename, title, initial_comment, thread_ts	Upload a file to Slack using the modern external upload flow. The file content is posted to a channel or as a thread reply.
`slack.slack_list_files`	Read	channel, user, types, count, page	List files in Slack, optionally filtered by channel, user, or file type.
`slack.slack_get_file`	Read	file	Get detailed information about a Slack file.
`slack.slack_list_users`	Read	limit, cursor, include_locale	List all users in the Slack workspace.
`slack.slack_get_user`	Read	user	Get detailed information about a Slack user by their user ID.
`slack.slack_find_user_by_email`	Read	email	Look up a Slack user by their email address.
`slack.slack_add_reaction`	Write	channel, name, timestamp	Add an emoji reaction to a Slack message.
`slack.slack_remove_reaction`	Write	channel, name, timestamp	Remove an emoji reaction from a Slack message.
`slack.slack_list_usergroups`	Read	include_count, include_disabled, include_users	List all usergroups in the Slack workspace.
`slack.slack_update_usergroup_members`	Write	usergroup, users	Update the members of a Slack usergroup.

Automation Notes

Use --json for machine-readable output.
Keep credentials out of argv by using environment variables or stored KosmoKrator configuration.
Configure read/write policy before unattended runs; use --force only for trusted automation.
Use the MCP gateway instead when the agent needs dynamic tool discovery inside a conversation.

Related Slack CLI Pages

CI Slack CLI for CI. Shell Scripts Slack CLI for shell scripts. Headless Automation Slack CLI for headless automation. Coding Agents Slack CLI for coding agents.