tickets/check-in-attendee marks one attendee as arrived.
It then reads the state back, which is the part worth knowing about.
At a glance
| Ability | tickets/check-in-attendee |
| Toolset | Event Tickets — toolset/event-tickets |
| Group | Event Tickets › Attendees |
| Requires | Event Tickets, active on the site |
| Capability | manage_options |
| Safety | Writes data |
| Repeatable | Idempotent — running it twice leaves the same result |
| Ships in | AcrossAI Abilities Manager 0.0.34 and later |
How it works
Event Tickets exposes a filter over check-in, and a site can use it to veto one — a plugin enforcing a time window, a membership check, a per-event rule. The write appears to go through and the attendee is not checked in.
So the state is read back and reported as checked_in. Trusting the call rather than the read-back is how a door queue ends up with people the system says arrived and the door staff say did not.
The operation is idempotent: checking in an already-checked-in attendee reports the same state and changes nothing.
Input
| Name | Type | Required | What it is |
|---|---|---|---|
attendee_id | integer | Yes | The attendee ID. |
What comes back
| Name | Type | What it is |
|---|---|---|
attendee_id | integer | The attendee. |
checked_in | boolean | The state read back after the write. |
success | boolean | Whether the call completed. |
message | string | A one-line summary of what happened, suitable for showing a human. |
error_code | string | Present only on failure — a stable machine-readable reason, such as a missing field, a wrong field type or an unmet confirmation. |
Example
Ask your assistant:
Check in attendee 5521 — they’re at the door.
It resolves to one call:
{
"ability": "tickets/check-in-attendee",
"parameters": {
"attendee_id": 5521
}
}Worth knowing
- Read
checked_inin the response rather than assuming success. A site filter can refuse. - Idempotent, so a double scan at the door is harmless.
- Reverse it with
tickets/undo-check-in.
Related abilities
- Undo Check In — reverse it
- List Attendees — find the attendee ID
- Get Attendee Summary — the running total
Get the plugins:
AcrossAI Abilities Manager · AcrossAI MCP Manager
Browse the rest: Every ability, by category