diff --git a/github_copilot/README.md b/github_copilot/README.md
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+++ b/github_copilot/README.md
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+# GitHub Copilot Registration Pruning
+
+This automation searches daily for all users in a GitHub organization that are actively using Copilot.
+If Copilot was not used in a preceding period, it automatically unregisters them, and then notifies them.
+Users can then optionally ask for their subscription to be reinstated.
+
+## Slack Usage
+
+- `/ak prune-idle-copilot-seats` invokes the automation immidetly.
+- `/ak find-idle-copilot-seats` just displays the potentially idle seats.
diff --git a/github_copilot/autokitteh.yaml b/github_copilot/autokitteh.yaml
new file mode 100644
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+++ b/github_copilot/autokitteh.yaml
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+version: v1
+
+project:
+  name: github_copilot
+  vars:
+    - name: GITHUB_ORG
+      value: "yourorg"
+    - name: IDLE_USAGE_THRESHOLD
+      value: "72h"
+    # If set, only manage GitHub Copilot subscriptions to the specified users, separated by commas.
+    - name: LOGINS
+      value: ""
+    - name: LOG_CHANNEL
+      value: "github-copilot-registrations"
+  connections:
+    - name: mygithub
+      integration: github
+    - name: myslack
+      integration: slack
+  triggers:
+    - name: check_daily
+      schedule: "@daily"
+      call: triggers.star:on_schedule
+    - name: check_now
+      connection: myslack
+      event_type: app_mention
+      call: triggers.star:on_slack_app_mention
diff --git a/github_copilot/helpers.star b/github_copilot/helpers.star
new file mode 100644
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+++ b/github_copilot/helpers.star
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+load("@github", "mygithub")
+load("@slack", "myslack")
+
+def _email_to_slack_user_id(email):
+    resp = myslack.users_lookup_by_email(email)
+    return resp.user.id if resp.ok else ""
+
+def github_username_to_slack_user_id(github_username, github_owner_org):
+    resp = mygithub.get_user(github_username, owner = github_owner_org)
+    github_user_link = "<%s|%s>" % (resp.htmlurl, github_username)
+
+    if resp.type == "Bot":
+        return ""
+
+    # Try to match by the email address first.
+    if resp.email:
+        slack_user_id = _email_to_slack_user_id(resp.email)
+        if slack_user_id:
+            return slack_user_id
+
+    # Otherwise, try to match by the user's full name.
+    if not resp.name:
+        return ""
+
+    gh_full_name = resp.name.lower()
+    for user in _slack_users():
+        slack_names = (user.profile.real_name.lower(), user.profile.real_name_normalized.lower())
+        if gh_full_name in slack_names:
+            return user.id
+
+    return ""
+
+def _slack_users(cursor = ""):
+    resp = myslack.users_list(cursor, limit = 100)
+    if not resp.ok:
+        return []
+
+    users = resp.members
+    if resp.response_metadata.next_cursor:
+        users += _slack_users(resp.response_metadata.next_cursor)
+    return users
diff --git a/github_copilot/msg.json b/github_copilot/msg.json
new file mode 100644
index 00000000..bb04a2c5
--- /dev/null
+++ b/github_copilot/msg.json
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+{
+    "blocks": [
+        {
+            "type": "header",
+            "text": {
+                "type": "plain_text",
+                "text": "You have been removed from the Copilot program due to inactivity",
+                "emoji": true
+            }
+        },
+        {
+            "type": "section",
+            "text": {
+                "type": "mrkdwn",
+                "text": "Reinstate"
+            },
+            "accessory": {
+                "type": "button",
+                "text": {
+                    "type": "plain_text",
+                    "text": ":repeat:",
+                    "emoji": true
+                },
+                "value": "reinstate",
+                "action_id": "button-action"
+            }
+        },
+        {
+            "type": "section",
+            "text": {
+                "type": "mrkdwn",
+                "text": "OK"
+            },
+            "accessory": {
+                "type": "button",
+                "text": {
+                    "type": "plain_text",
+                    "text": ":relieved:",
+                    "emoji": true
+                },
+                "value": "ok",
+                "action_id": "button-action"
+            }
+        }
+    ]
+}
diff --git a/github_copilot/seats.star b/github_copilot/seats.star
new file mode 100644
index 00000000..7fe76e19
--- /dev/null
+++ b/github_copilot/seats.star
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+load("env", "GITHUB_ORG", "IDLE_USAGE_THRESHOLD", "LOGINS", "LOG_CHANNEL")
+load("@github", "mygithub")
+load("@slack", "myslack")
+load("helpers.star", "github_username_to_slack_user_id")
+load("msg.json", "blocks")
+
+logins = LOGINS.split(",")
+idle_usage_threshold = time.parse_duration(IDLE_USAGE_THRESHOLD)
+
+def prune_idle_seats():
+    seats = find_idle_seats()
+    new_idle_seats = []
+    for seat in seats:
+        new_idle_seats.append(seat)
+
+        print("new idle: {}".format(seat))
+        start("seats.star:engage_seat", {"seat": seat})
+    return new_idle_seats
+
+def _get_all_seats():
+    # TODO: pagination.
+    return mygithub.list_copilot_seats(GITHUB_ORG).seats
+
+def find_idle_seats():
+    seats = _get_all_seats()
+
+    t, idle_seats = time.now(), []
+    for seat in seats:
+        if logins and (seat.assignee.login not in logins):
+            print("skipping %s" % seat.assignee.login)
+            continue
+
+        delta = t - seat.last_activity_at
+        is_idle = delta >= idle_usage_threshold
+
+        print("{}: {} - {} = {} {} {}".format(
+            seat.assignee.login,
+            t,
+            seat.last_activity_at,
+            delta, 
+            ">=" if is_idle else "<",
+            idle_usage_threshold,
+        ))
+
+        if is_idle:
+            idle_seats.append(seat)
+
+    return idle_seats
+
+def engage_seat(seat):
+    log = lambda msg: myslack.chat_post_message(LOG_CHANNEL, "{}: {}".format(seat.assignee.login, msg))
+
+    log("engaging")
+
+    github_login = seat.assignee.login
+    slack_id = github_username_to_slack_user_id(github_login, GITHUB_ORG)
+    if not slack_id:
+        print("No slack user found for github user %s" % github_login)
+        return
+
+    mygithub.remove_copilot_users(GITHUB_ORG, [github_login])
+
+    myslack.chat_post_message(slack_id, blocks=blocks)
+
+    s = subscribe('myslack', 'data.type == "block_actions" && data.user.id == "{}"'.format(slack_id))
+
+    say = lambda msg: myslack.chat_post_message(slack_id, msg)
+
+    value = next_event(s)["actions"][0].value
+
+    if value == 'ok':
+        say("Okey dokey!")
+        log("ok")
+        return
+
+    if value == 'reinstate':    
+        log("reinstate")
+        mygithub.add_copilot_users(GITHUB_ORG, [github_login])
+        say("You have been reinstated to the Copilot program.")
+        return
+
+    log("wierd response: {}".format(value))
diff --git a/github_copilot/triggers.star b/github_copilot/triggers.star
new file mode 100644
index 00000000..4fbea5e1
--- /dev/null
+++ b/github_copilot/triggers.star
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+load("@slack", "myslack")
+load("seats.star", "prune_idle_seats", "find_idle_seats")
+
+def on_schedule():
+    print(prune_idle_seats())
+
+def on_slack_app_mention(data):
+    parts = data.text.split(" ")
+    if len(parts) < 2:
+        myslack.chat_post_message(data.channel, "unrecorgnized command", thread_ts=data.ts)
+        return
+
+    cmd = parts[1].strip()
+
+    reply = lambda msg: myslack.chat_post_message(data.channel, msg, thread_ts=data.ts)
+    logins = lambda seats: [seat.assignee.login for seat in seats]
+
+    if cmd == "prune-idle-copilot-seats":
+        seats = prune_idle_seats()
+        reply("engaged {} new idle seats: {}".format(len(seats), logins(seats)))
+    elif cmd == "find-idle-copilot-seats":
+        seats = find_idle_seats()
+        reply("found {} idle seats: {}".format(len(seats), logins(seats)))