Search tickets by status, label, assignee, date range, and free-text query. Returns a paginated list.

Fetch a single ticket by ticket_id, including all messages and metadata.

Update ticket status, assignee, labels, color, or pending reason. Only provided fields are changed.

Send an email reply on a Re:lation ticket. The email goes directly to the customer.

Safety: you MUST pass confirm_send: true. Without it the call is rejected. This guards against an agent accidentally firing a send during tool chaining.

Flow:

1. Find the message to reply to (use get_ticket or search_tickets to find a message_id).

2. Find the mail_account_id to send from (use list_mail_accounts).

3. Call reply_mail with subject / body / to / status_cd / confirm_send.

After a successful send the returned object contains the new message_id and ticket_id.

List the mail accounts (送信元) configured for a message_box. Use this to discover mail_account_id before calling reply_mail.

Create an internal "応対メモ" on a ticket. Visible only to the support team; the end customer never sees it. Use this for triage notes, investigation context, or handoff messages.

Post a team comment to a ticket. Not visible to the customer — used for internal discussion.

Search customers in the address book by email, phone, name, or company.

Fetch a single customer (address-book entry) by id.

List all labels configured for a message_box. Useful before calling update_ticket with label_ids.

List operator users who can be assigned to tickets.