Turn the forked slack-mcp-server into a CLI so running many agents no
longer means one resident MCP process each. Every command is a
short-lived process that reads the shared on-disk cache.
- rename module to github.com/paymog/slack-cli (go install/homebrew/ldflags)
- internal/toolcall: invoke the upstream tool handlers in-process; the only
mcp-go coupling lives here, so pkg/handler and pkg/provider are reused
byte-for-byte (clean upstream merges, fork-and-extend)
- internal/{cli,cmds,config,credstore,runtime,output}: cobra command tree,
keyring-backed credential profiles, provider bootstrap, result printing
- 21 tools as subcommands (channels, conversations, users, usergroups,
saved, reactions, attachments, cache); write tools keep their env gating
- goreleaser + homebrew release workflow; ships a skills/slack-cli skill
- unit tests for config/credstore/toolcall; MCP server still builds
The MCP server (cmd/slack-mcp-server) is kept intact.
Add five new tools for managing Slack user groups (subteams):
- usergroups_list: List all user groups in the workspace
- usergroups_me: Manage your own membership (list/join/leave)
- usergroups_create: Create a new user group
- usergroups_update: Update group metadata (name, handle, description)
- usergroups_users_update: Replace all members of a group
The usergroups_me tool provides a convenient way to join or leave
groups without needing to know the full member list. It handles
fetching current members and updating the list automatically.
Required OAuth scopes:
- usergroups:read (for list operations)
- usergroups:write (for create/update/join/leave operations)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Paymahn Moghadasian