comms-slack

comms-slack

Search Slack workspace content using your personal user token (xoxp-...).

Setup

Add your Slack User Token to ~/.claude/settings.json under env:

{
  "env": {
    "SLACK_USER_TOKEN": "xoxp-...",
    "SLACK_USER_ID": "U..."
  }
}

The skill also falls back to a .env in the current working directory if present.

Commands

All commands accept --json for structured output (useful when piping to jq).

Search messages

uv run python slack_search.py search "keyword"

# Filters
uv run python slack_search.py search "deploy" --channel engineering --from sam --limit 10

# Slack search modifiers also work inside the query
uv run python slack_search.py search "bug after:2026-01-01 has:link"

Fetch a thread

Paste any Slack permalink, or pass <channel-id>:<ts>:

uv run python slack_search.py thread https://your-team.slack.com/archives/C0123456/p1700000000000001
uv run python slack_search.py thread C0123456:1700000000.000001 --json

Returns the parent message + all replies, with <@U…> mentions resolved to @username. Each message also includes a files array with metadata for any attached images / videos / docs.

Download attachments

search and thread both accept --download [DIR]. When set, file attachments on each message are downloaded and the local path is added to the files entry as local_path. Omit DIR to use ~/.cache/slack-search/files/<scope>/.

# default cache dir
uv run python slack_search.py thread C0123456:1700000000.000001 --download --json

# explicit dir
uv run python slack_search.py thread <permalink> --download /tmp/slack-files

Requires the files:read scope on the user token; without it Slack returns the workspace login HTML and the downloader prints a clear error.

List channels / users / profile (lookup helpers for filters)

uv run python slack_search.py channels   # public + private the user is in
uv run python slack_search.py users      # active workspace members
uv run python slack_search.py me         # your profile (auth check)

Search modifiers

Slack's native modifiers work inside the query string:

• in:channel — restrict to channel
• from:user — restrict to author
• before:YYYY-MM-DD, after:YYYY-MM-DD
• has:link, has:reaction

--channel / --from are sugar for in: / from:.

Required scopes

Personal user token (xoxp-…) needs:

• search:read
• channels:read, groups:read
• users:read
• channels:history, groups:history (for thread)
• files:read (only required for --download; without it, Slack bounces file URLs to the workspace login page)

Troubleshooting

• missing_scope: add the missing scope in your Slack App's OAuth settings, then reinstall the app.
• invalid_auth: token expired — regenerate at https://api.slack.com/apps.
• Token not picked up: confirm with printenv SLACK_USER_TOKEN. If empty, the env block in ~/.claude/settings.json may not have been reloaded — restart Claude Code.