Command Line Client

The slack command-line client returns JSON data from the Slack API.

Authenticate with Slack

$ slack --slack-api-token=[token] auth test
{"ok":true,"url":"...","team":"...","user":"...","team_id":"...","user_id":"..."}

Send a Message

export SLACK_API_TOKEN=...
$ slack chat postMessage --text="hello world" --channel="#general"
{"ok":true,"channel":"...","ts":"...","message":{"text":"hello world","username":"bot","type":"message","subtype":"bot_message","ts":"..."}}

Get Channel Info

$ slack conversations info --channel=#general
{"ok":true,"channel":{"id":"C04KB5X4D","name":"general", ...}}

List Users

Combine with jq, a command-line JSON parser.

$ slack users list | jq '.members | map({(.id): .name})'
[
  {
    "U04KB5WQR": "dblock"
  },
  {
    "U07518DTL": "rubybot"
  }
]

See slack help for a complete command-line reference.