Chronary by chronary.ai
MCP server · Calendars & scheduling · indexed, not reviewed
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No score, grade or rank. This listing is facts from the official MCP registry and our own checks, and it stays out of the rankings until the panel reviews it.
Calendar API for AI agents: events, availability, Google/Microsoft setup, scheduling, and iCal.
Facts
- MCP registry
ai.chronary/mcp· 1.5.2- Endpoint
https://api.chronary.ai/mcp- Packages
npm@chronary/mcp stdio- npm / week
- 66
- GitHub stars
- 0
- Registry entry
- updated 14 Jul 2026
From the official MCP registry, the package registries and our own checks. JSON · Markdown
Why it's listed
- It's published in the registry under chronary.ai, a namespace the registry only gives to whoever proves they control that domain.
Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.
Tools it lists 54 · about 13,846 tokens of context · checked 2 hours ago
| Tool | What it does | Hint |
|---|---|---|
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").… | |
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… | |
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`.… | |
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… | |
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… | |
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… | |
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.… | |
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… | |
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… | |
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… | |
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… | |
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… | |
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… | |
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… | |
cancel_proposal | Cancel an open proposal. Fires a proposal.cancelled webhook with reason="organizer_cancelled". Requires an org-level API key. Pro plan only. | |
set_availability_rules | Set or replace the availability rules on a calendar — buffer times before/after events and optional per-day working hours. When these rules are set, every availability query on this calendar automatically applies them… | |
get_availability_rules | Read the buffer times and working-hours rules configured on a calendar. Returns the rules row, or an error if none are set. | |
clear_availability_rules | Remove the availability rules from a calendar, reverting to the default (no buffers, no working-hours mask). Returns the deleted row, or an error if none were set. | |
create_scoped_key | Create an agent-scoped API key (chr_ak_*) that can only act on behalf of a single agent. Use this to self-provision or rotate per-agent credentials. The plaintext key is returned exactly once in the response — store it… | |
list_scoped_keys | List all live (non-revoked) agent-scoped API keys for this org. Returns key metadata only (id, prefix, agent_id, label, created_at) — never the plaintext secret. Requires an org-level API key. | |
revoke_scoped_key | Revoke an agent-scoped API key by ID. Revocation is permanent (cannot be un-revoked); the key stops authenticating within about a minute. Requires an org-level API key. | |
create_webhook | Create a webhook subscription so the org receives HTTP POST notifications when events occur (e.g. event.created, proposal.confirmed). The signing secret is returned ONCE in this response — store it to verify the… | |
list_webhooks | List the org's webhook subscriptions with their subscribed event types and active state. Signing secrets are never returned. Requires an org-level API key. | |
get_webhook | Get a single webhook subscription by id, including its subscribed event types and active state. The signing secret is never returned. Requires an org-level API key. | |
update_webhook | Update a webhook subscription — change its delivery URL, the set of subscribed event types, or pause/resume it via active. At least one field must be supplied. Requires an org-level API key. | |
delete_webhook | Permanently delete a webhook subscription. This frees its endpoint slot against the per-plan cap. Requires an org-level API key. | |
list_webhook_deliveries | List delivery attempts for a webhook subscription, with per-status counts (pending/delivered/failed). Use this to debug failing deliveries. Requires an org-level API key. | |
get_agent | Fetch a single agent by ID. An agent represents an AI assistant, human, or shared resource (e.g. a meeting room). Agent-scoped API keys may only read their own agent. | |
update_agent | Update an agent's name, description, metadata, or status (active/paused). Requires an org-level API key — agent-scoped keys cannot mutate agents. | |
delete_agent | Decommission an agent. This marks the agent as decommissioned and revokes all of its scoped API keys. Requires an org-level API key — agent-scoped keys cannot delete agents. | |
list_calendars | List calendars in the org. Org-level API keys see every calendar (agent-owned and shared); agent-scoped keys see only their own agent's calendars. Use this to discover calendar IDs before creating or listing events. | |
get_calendar | Fetch a single calendar by ID, including its name, timezone, agent status, and default reminders. Agent-scoped keys may only read calendars owned by their agent. | |
update_calendar | Update a calendar's name, timezone, agent status, default reminders, or metadata. Agent-scoped keys may only update calendars owned by their agent. | |
delete_calendar | Delete a calendar (soft delete). Its events are no longer returned and it stops contributing to availability. Agent-scoped keys may only delete calendars owned by their agent. | |
create_booking_page | Create a public booking page (a hosted scheduling link) for a calendar. Returns a booking_url to send to a human; when they pick a slot, a confirmed event is created on the calendar and an event.created webhook fires… | |
list_booking_pages | List booking pages in the org. Agent-scoped keys see only pages on their own agent's calendars. | |
get_booking_page | Fetch a single booking page by ID, including its public booking_url and settings. | |
delete_booking_page | Delete (deactivate) a booking page. Its hosted URL stops resolving; already-booked events are unaffected. | |
get_usage | Get the calling org's current-period usage and plan limits (agents, calendars, events, API calls, webhooks, availability queries, iCal subscriptions, proposals, scoped keys, holds, cross-calendar queries). Requires an… | |
get_audit_log | List audit-log entries for the calling org — mutating operations and auth-lifecycle events, newest first. Results are clamped to the plan's retention window. Requires an org-level API key (chr_sk_*); agent-scoped keys… | |
accept_terms | Re-accept the current Chronary terms of service on behalf of the calling org. Use this when responses carry the Chronary-Terms-Upgrade-Required header — a material ToS bump otherwise leaves MCP-only agents stuck without… | |
create_connection_link | Request human setup of Google Calendar or Microsoft Outlook for a Chronary calendar. Give setup_url to a human; the agent never receives OAuth credentials, provider calendar names, or event data. The secret URL is… | |
get_connection_link | Poll a human-calendar setup request. Returns provider-neutral status and resulting connection ID when complete, but never replays the bearer setup URL or exposes human calendar data. | |
cancel_connection_link | Cancel a pending human-calendar setup request. This invalidates the setup URL and does not disconnect an already completed Google or Microsoft connection. |
What https://api.chronary.ai/mcp answered to tools/list, asked without credentials over MCP 2025-11-25. The token figure is the size of the list as sent, divided by four; a model sees about that much before it calls anything. Full definitions, input schemas included, are in the listing's JSON under mcpTools.
How its tools read to an agent 0 errors · 55 warnings · 1 note
- warnTC16accept_termsno readOnlyHint or destructiveHint
- warnTC16cancel_connection_linkno readOnlyHint or destructiveHint
- warnTC16cancel_eventno readOnlyHint or destructiveHint
- warnTC16cancel_proposalno readOnlyHint or destructiveHint
- warnTC16clear_availability_rulesno readOnlyHint or destructiveHint
- warnTC16confirm_eventno readOnlyHint or destructiveHint
- warnTC16create_agentno readOnlyHint or destructiveHint
- warnTC16create_booking_pageno readOnlyHint or destructiveHint
- warnTC16create_calendarno readOnlyHint or destructiveHint
- warnTC16create_connection_linkno readOnlyHint or destructiveHint
- warnTC16create_eventno readOnlyHint or destructiveHint
- warnTC16create_proposalno readOnlyHint or destructiveHint
- warnTC16create_scoped_keyno readOnlyHint or destructiveHint
- warnTC16create_webhookno readOnlyHint or destructiveHint
- warnTC16delete_agentno readOnlyHint or destructiveHint
- warnTC16delete_booking_pageno readOnlyHint or destructiveHint
- warnTC16delete_calendarno readOnlyHint or destructiveHint
- warnTC16delete_ical_subscriptionno readOnlyHint or destructiveHint
- warnTC16delete_webhookno readOnlyHint or destructiveHint
- warnTC16find_meeting_timeno readOnlyHint or destructiveHint
- warnTC16get_agentno readOnlyHint or destructiveHint
- warnTC16get_audit_logno readOnlyHint or destructiveHint
- warnTC16get_availabilityno readOnlyHint or destructiveHint
- warnTC16get_availability_rulesno readOnlyHint or destructiveHint
The first 24 of 56; every finding is in the listing's JSON under mcpTools.check.
The checks from /check and anchor check, run each day on the list above: about 13,846 tokens of definitions. Not part of the score yet. Check your own server.