Chronary

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• Create Agent

  Register your agent (AI assistant, human participant, or resource) with Chronary so it can own calendars, events, and webhooks.

• List Agents

  List all agents in your organization

• Create Calendar

  Create a calendar to hold events and track availability. Calendars are required before creating events — call this first when setting up a new agent. An agent can have multiple calendars (e.g. "Work", "Personal"). Org-level calendars (no agent_id) can be used as shared resources like meeting rooms.

• Create Event

  Create a booking, appointment, meeting, hold, or any scheduled event on a calendar. The calendar_id comes from create_calendar or list_events. Once created, this event blocks the agent's availability during that time and appears in availability queries. Use status="hold" with hold_expires_at to tentatively reserve a slot that auto-releases on TTL.

• List Events

  List events on a calendar or across an agent's calendars, including internally created events and externally synced events from iCal subscriptions (e.g. Google Calendar, Outlook). Provide `calendar_id` OR `agent_id`. Narrow with `start_after`/`start_before` (time window), `status`, and `source`.

• Get Event

  Retrieve a single event by ID, including its title, times, status, location, reminders, and metadata. Works for both internally created events and externally synced iCal events. `calendar_id` is optional — if omitted the calendar is resolved from the event. Provide `calendar_id` to fail fast on cross-calendar typos.

• Update Event

  Reschedule or edit an event — change its title, description, start/end times, location, status, reminders, or metadata. Use this to move an appointment to a new time or update its details. Provide only the fields you want to change. Holds cannot be edited via this tool (use confirm_event / release_event). External iCal events are read-only. `calendar_id` is optional — if omitted it is resolved from the event.

• Get Availability

  Check when a single agent is free across its Chronary calendars and any human calendars authorized for that agent. This tool is fail-closed: always inspect `availability_state` and `warnings` before using slots. Accepts `start`/`end` or the `start_time`/`end_time` aliases.

• Find Meeting Time

  Find slots when multiple agents are free across Chronary calendars and any human calendars authorized for each agent. This tool is fail-closed: always inspect `availability_state` and `warnings` before using slots. Accepts `agents`/`start`/`end` or their aliases.

• Cancel Event

  Delete or cancel an event from a calendar. Use this to remove, cancel, or delete any scheduled event or appointment. The event is marked cancelled and excluded from future availability calculations. For a recurring series, pass `occurrence_start` to cancel just that one occurrence (the series continues); omit it to cancel the whole series. `calendar_id` is optional — if omitted the calendar is looked up from the event. Provide `calendar_id` to fail fast on cross-calendar typos.

• Confirm Event

  Promote a held event to a confirmed booking. The event must currently have status="hold" and its hold_expires_at must not have passed. After confirmation, event.started and event.ended lifecycle webhooks fire at the scheduled times.

• Release Event

  Manually release a held event before its hold_expires_at. The event must currently have status="hold". Frees the slot for other agents to book.

• Subscribe Ical

  Link an external iCal feed (e.g. a human's Google Calendar) to an agent's calendar so external events appear in availability calculations. The target calendar must be owned by the specified agent — create the calendar with that agent_id first (org-level calendars without an agent_id cannot host external iCal subscriptions; create a dedicated per-agent calendar for sync targets).

• List Ical Subscriptions

  List an agent's external iCal feed subscriptions (e.g. linked Google Calendar / Outlook feeds), including their sync status and last sync time.

• Get Ical Subscription

  Get a single external iCal feed subscription by id, including its sync status, last sync time, and last error.

• Update Ical Subscription

  Update an external iCal feed subscription — change its label or its feed URL. Changing the URL forces a full re-sync on the next poll.

• Delete Ical Subscription

  Delete an external iCal feed subscription. Events previously synced from the feed are no longer refreshed.

• Sync Ical Subscription

  Trigger an immediate sync of an external iCal feed subscription instead of waiting for the next scheduled poll. Returns once the sync has been queued.

• Get Calendar Context

  Get a calendar's temporal context in a single call: the current event (if one is happening now), the next upcoming event, recent past events, a short upcoming window, and the owning agent's status (idle/working/waiting/error). Use this to answer "what is this agent doing right now?" without issuing multiple list_events queries.

• Create Proposal

  Create a scheduling proposal — send a set of candidate time slots to one or more participant agents so they can accept, decline, or counter-propose. The organizer agent owns the proposal; once every participant responds, the system auto-resolves to the highest-scoring slot (or cancels if all decline). Requires an org-level API key. Pro plan only.

• List Proposals

  List scheduling proposals for the org. Filter by status (pending|confirmed|expired|cancelled) or organizer_agent_id. Requires an org-level API key.

• Get Proposal

  Get a scheduling proposal by id, including its slots and per-participant responses. Requires an org-level API key.

• Respond To Proposal

  Submit a response (accept / decline / counter) on behalf of one participant agent to an open proposal. An "accept" requires the slot id from the proposal; a "counter" can suggest alternative slots. When all participants have responded the proposal auto-resolves — no separate resolve call needed in the normal flow. Requires an org-level API key. Pro plan only.

• Resolve Proposal

  Force-resolve an open proposal using responses collected so far. Picks the highest-scoring slot among those accepted by the most participants and creates a confirmed calendar event. If every response was "decline", the proposal is cancelled instead. Use when you want to close out a proposal without waiting for every participant. Requires an org-level API key. Pro plan only.

• Cancel Proposal

  Cancel an open proposal. Fires a proposal.cancelled webhook with reason="organizer_cancelled". Requires an org-level API key. Pro plan only.