There could be a history graph hyperlink for Items that are related to current alerts.

The alerts command currently displays also alerts (triggers) with one OK event.
These events usually exist for newly created hosts.

Create RPM package for the project and add it to the Fedora (possibly EPEL).

Add options for filtering alerts by host or group name and time period.

Add possibility to display trigger history via the alerts command.

Receiving alerts from zabbix may be more use comfortable, when used in chat, instead of single message. Please, provide configurable message type option.

message type patch

Command: alerts host 10 fails with exception:

Traceback (most recent call last):
  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/ludolph/command.py", line 253, in wrap
    response = fun(obj, msg, *args, **kwargs)
  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/ludolph_zabbix/zapi.py", line 463, in alerts
    display_items=items, hosts_or_groups=args)
  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/ludolph_zabbix/zapi.py", line 332, in _show_alerts
    events = self._get_alert_events(triggers, since=since, until=until)
  File "/opt/rh/python27/root/usr/lib/python2.7/site-packages/ludolph_zabbix/zapi.py", line 263, in _get_alert_events
    missing_eventids = [t['lastEvent']['eventid'] for t in triggers if t['triggerid'] not in events]
TypeError: list indices must be integers, not str

Zabbix plugin should support obtaining graphs via Zabbix API. It should have the following synopsis:

graph [@period]

keyword is a regular expression or pattern, which matches the graph for specific host/hostgroup.
period represents time period, e.g 1h will show data for the last hour.

Some interesting URLs:
https://www.zabbix.com/documentation/2.2/manual/api/reference/graph/get
https://github.com/sorah/hubot-zabbix/blob/master/scripts/hubot-zabbix.coffee