AddEvent MCP by usefulapi

Read AddEvent calendars, events, RSVPs and subscribers; create and update calendars and events.

Should I use this

Quality & Safety

A
Description quality
100%
Schema completeness
83%
Naming quality
97%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Findings (3)

  • LOWTool 'addevent_list_calendar_subscribers' name length outside 3-30 rangein addevent_list_calendar_subscribers
  • LOWTool 'addevent_get_calendar_subscriber' name length outside 3-30 rangein addevent_get_calendar_subscriber
  • LOWTool 'addevent_list_calendar_templates' name length outside 3-30 rangein addevent_list_calendar_templates

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~6,475Tokens (tool definitions)
~3.0 KBTypical response size
Significant attention impact (5.06% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "addevent": {
      "url": "https://addevent.usefulapi.io/mcp"
    }
  }
}

Remote endpoints

https://addevent.usefulapi.io/mcpstreamable-http

What it can do

Tool inventory

Tools (18)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢addevent_list_calendars(calendar_ids, sort_by, sort_order, page, page_size)

List the account's calendars (newest first by default) with id, title, timezone, whether it is the default calendar, landing-page links and counts of events and subscribers. GET /calendars.

Input Schema

{
  "type": "object",
  "properties": {
    "calendar_ids": {
      "description": "Only these calendar ids.",
      "minItems": 1,
      "maxItems": 50,
      "type": "array",
      "items": {
        "anyOf": [
          {
            "type": "string",
            "minLength": 1,
            "maxLength": 100,
            "pattern": "^\\S+$"
          },
          {
            "type": "integer",
            "exclusiveMinimum": 0,
            "maximum": 9007199254740991
          }
        ],
        "description": "The id (text or number)."
      }
    },
    "sort_by": {
      "description": "Sort field (default created).",
      "type": "string",
      "enum": [
        "created",
        "title"
      ]
    },
    "sort_order": {
      "description": "Sort direction. Needs sort_by.",
      "type": "string",
      "enum": [
        "asc",
        "desc"
      ]
    },
    "page": {
      "description": "Page number, from 1 (default 1). Pass the previous reply's next_page.",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 100000
    },
    "page_size": {
      "description": "Results per page, 1-20 (default 10).",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 20
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_get_calendar(calendar_id)

One calendar by id: title, timezone, week start, template ids, subscriber and event counts, links, custom data. GET /calendars/{id}.

Input Schema

{
  "type": "object",
  "properties": {
    "calendar_id": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ],
      "description": "Calendar id (see addevent_list_calendars)."
    }
  },
  "required": [
    "calendar_id"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟡addevent_create_calendar(title, timezone, weekday_begin, description, internal_name, ...)

WRITE: creates a new calendar in the AddEvent account (a new, empty calendar; nothing existing is changed and nobody is notified). Needs a title. POST /calendars.

Input Schema

{
  "type": "object",
  "properties": {
    "title": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Calendar title (single line)."
    },
    "timezone": {
      "description": "Default timezone for events on this calendar (IANA name).",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "weekday_begin": {
      "description": "First day of the week.",
      "type": "string",
      "enum": [
        "sunday",
        "monday"
      ]
    },
    "description": {
      "description": "Shown on the calendar landing page.",
      "type": "string",
      "maxLength": 5000
    },
    "internal_name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Internal name, never shown publicly."
    },
    "calendar_color": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20,
      "description": "Color 1-20 from the palette."
    },
    "landing_page_template_id": {
      "description": "Calendar landing page template id, or 'default' (see addevent_list_calendar_templates).",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "embeddable_calendar_template_id": {
      "description": "Embeddable calendar template id, or 'default'.",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "custom_data": {
      "type": "object",
      "propertyNames": {
        "type": "string",
        "minLength": 1,
        "maxLength": 100
      },
      "additionalProperties": {
        "anyOf": [
          {
            "type": "string",
            "maxLength": 2000
          },
          {
            "type": "number"
          },
          {
            "type": "boolean"
          },
          {
            "type": "null"
          }
        ]
      },
      "description": "Arbitrary key-value pairs to store on the object (snake_case keys), e.g. an external id."
    }
  },
  "required": [
    "title"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🔴addevent_update_calendar(calendar_id, title, timezone, weekday_begin, description, ...)

WRITE: changes fields of an existing calendar (only the fields you pass; the rest stay). Title, description and timezone changes show on its landing page and can reach people who subscribe to the calendar feed. Not reversible by this server (no previous values are kept), so read the calendar first. PATCH /calendars/{id}.

Input Schema

{
  "type": "object",
  "properties": {
    "calendar_id": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ],
      "description": "Calendar id to change."
    },
    "title": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "New title (single line)."
    },
    "timezone": {
      "type": "string",
      "minLength": 1,
      "maxLength": 100,
      "description": "IANA timezone such as America/Los_Angeles, or 'floating' (same local time for everyone). See addevent_list_timezones."
    },
    "weekday_begin": {
      "type": "string",
      "enum": [
        "sunday",
        "monday"
      ]
    },
    "description": {
      "type": "string",
      "maxLength": 5000
    },
    "internal_name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Internal name, never shown publicly."
    },
    "calendar_color": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20,
      "description": "Color 1-20 from the palette."
    },
    "landing_page_template_id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "embeddable_calendar_template_id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "custom_data": {
      "description": "Key-value pairs to store on the calendar (snake_case keys).",
      "type": "object",
      "propertyNames": {
        "type": "string",
        "minLength": 1,
        "maxLength": 100
      },
      "additionalProperties": {
        "anyOf": [
          {
            "type": "string",
            "maxLength": 2000
          },
          {
            "type": "number"
          },
          {
            "type": "boolean"
          },
          {
            "type": "null"
          }
        ]
      }
    }
  },
  "required": [
    "calendar_id"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_list_events(calendar_ids, event_ids, starts_before, ends_after, search, ...)

Search the account's events (newest created first; by start time when a date filter is used): title, start/end, timezone, location, RSVP settings and stats, landing-page links. Filter by calendar, event ids, text, date window or a custom_data pair. GET /events.

Input Schema

{
  "type": "object",
  "properties": {
    "calendar_ids": {
      "description": "Only events on these calendar ids.",
      "minItems": 1,
      "maxItems": 50,
      "type": "array",
      "items": {
        "anyOf": [
          {
            "type": "string",
            "minLength": 1,
            "maxLength": 100,
            "pattern": "^\\S+$"
          },
          {
            "type": "integer",
            "exclusiveMinimum": 0,
            "maximum": 9007199254740991
          }
        ],
        "description": "The id (text or number)."
      }
    },
    "event_ids": {
      "description": "Only these event ids.",
      "minItems": 1,
      "maxItems": 50,
      "type": "array",
      "items": {
        "anyOf": [
          {
            "type": "string",
            "minLength": 1,
            "maxLength": 100,
            "pattern": "^\\S+$"
          },
          {
            "type": "integer",
            "exclusiveMinimum": 0,
            "maximum": 9007199254740991
          }
        ],
        "description": "The id (text or number)."
      }
    },
    "starts_before": {
      "description": "Only events that start before this date-time (datetime_max; naive comparison, timezones ignored).",
      "type": "string"
    },
    "ends_after": {
      "description": "Only events that end after this date-time (datetime_min; naive comparison, timezones ignored).",
      "type": "string"
    },
    "search": {
      "description": "Case-insensitive text in title, internal name, description or location.",
      "type": "string",
      "minLength": 1,
      "maxLength": 200
    },
    "custom_data_key": {
      "description": "Custom data key (needs custom_data_value).",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "custom_data_value": {
      "description": "Custom data value (needs custom_data_key).",
      "type": "string",
      "minLength": 1,
      "maxLength": 500
    },
    "sort_by": {
      "description": "Sort field.",
      "type": "string",
      "enum": [
        "created",
        "title",
        "calendar_id",
        "datetime_start"
      ]
    },
    "sort_order": {
      "description": "Sort direction. Needs sort_by.",
      "type": "string",
      "enum": [
        "asc",
        "desc"
      ]
    },
    "page": {
      "description": "Page number, from 1 (default 1). Pass the previous reply's next_page.",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 100000
    },
    "page_size": {
      "description": "Results per page, 1-20 (default 10).",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 20
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_get_event(event_id)

One event by id (evt-...): all fields incl. description, organizer, reminder, recurring rule, RSVP settings and stats, custom data and share links. GET /events/{id}.

Input Schema

{
  "type": "object",
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ],
      "description": "Event id, like evt-0f571af553d8437eb6a9ce22384fdcba (see addevent_list_events)."
    }
  },
  "required": [
    "event_id"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟡addevent_create_event(title, datetime_start, calendar_id, datetime_end, all_day_event, ...)

WRITE: creates a new event on a calendar (the account's default calendar if calendar_id is omitted). Creates a public event landing page and share links; it does not e-mail anyone, though people subscribed to that calendar's feed will see the event on their next sync. Needs title and datetime_start. POST /events.

Input Schema

{
  "type": "object",
  "properties": {
    "title": {
      "type": "string",
      "minLength": 1,
      "maxLength": 300,
      "description": "Event title (single line)."
    },
    "datetime_start": {
      "type": "string",
      "description": "Start date-time: YYYY-MM-DD, YYYY-MM-DD hh:mm or YYYY-MM-DD hh:mm:ss."
    },
    "calendar_id": {
      "description": "Calendar to add the event to (see addevent_list_calendars); default calendar if omitted.",
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ]
    },
    "datetime_end": {
      "description": "End date-time (default: start + 1 hour). Same formats as the start.",
      "type": "string"
    },
    "all_day_event": {
      "description": "All-day event: only the dates are used.",
      "type": "boolean"
    },
    "timezone": {
      "description": "IANA timezone for the start/end (default: the calendar's timezone), or 'floating'.",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "recurring_rule": {
      "description": "iCalendar recurrence rule such as FREQ=WEEKLY;COUNT=10. The start must match the rule. Omit for a one-off event; on update an empty string makes the event stop repeating.",
      "type": "string",
      "maxLength": 500
    },
    "description": {
      "description": "Plain text or simple HTML (keep under ~500 characters for cross-browser links).",
      "type": "string",
      "maxLength": 10000
    },
    "internal_name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Internal name, never shown publicly."
    },
    "location": {
      "description": "Address or URL (meeting link). Use either location or location_id, not both.",
      "type": "string",
      "maxLength": 1000
    },
    "location_id": {
      "description": "Id of a saved location (0 = none). Not together with location.",
      "type": "integer",
      "minimum": 0,
      "maximum": 9007199254740991
    },
    "organizer_name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Organizer name (needs organizer_email)."
    },
    "organizer_email": {
      "description": "Organizer e-mail (needs organizer_name).",
      "type": "string",
      "maxLength": 254,
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$"
    },
    "reminder": {
      "description": "Minutes before the start for a calendar-app reminder (0-10800).",
      "type": "integer",
      "minimum": 0,
      "maximum": 10800
    },
    "color": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20,
      "description": "Color 1-20 from the palette."
    },
    "free_busy": {
      "description": "How the event shows in an attendee's calendar.",
      "type": "string",
      "enum": [
        "free",
        "busy",
        "default"
      ]
    },
    "landing_page_template_id": {
      "description": "Event landing page template id or 'default' (see addevent_list_event_templates).",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "rsvp_enabled": {
      "description": "Require an RSVP before the event can be added to a calendar.",
      "type": "boolean"
    },
    "rsvp_form_id": {
      "description": "RSVP form id or 'default' (see addevent_list_rsvp_forms).",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "custom_data": {
      "type": "object",
      "propertyNames": {
        "type": "string",
        "minLength": 1,
        "maxLength": 100
      },
      "additionalProperties": {
        "anyOf": [
          {
            "type": "string",
            "maxLength": 2000
          },
          {
            "type": "number"
          },
          {
            "type": "boolean"
          },
          {
            "type": "null"
          }
        ]
      },
      "description": "Arbitrary key-value pairs to store on the object (snake_case keys), e.g. an external id."
    }
  },
  "required": [
    "title",
    "datetime_start"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🔴addevent_update_event(event_id, title, datetime_start, calendar_id, datetime_end, ...)

WRITE: changes fields of an existing event (only the fields you pass; the rest stay). The change goes live on its landing page and share links, and people who subscribed to the calendar or added the event with a live link are updated on their next calendar sync, so a time or location change can notify real people. No previous values are kept: read the event first. PATCH /events/{id}.

Input Schema

{
  "type": "object",
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ],
      "description": "Event id (evt-...) to change."
    },
    "title": {
      "type": "string",
      "minLength": 1,
      "maxLength": 300,
      "description": "New title (single line)."
    },
    "datetime_start": {
      "description": "New start: YYYY-MM-DD, YYYY-MM-DD hh:mm or YYYY-MM-DD hh:mm:ss.",
      "type": "string"
    },
    "calendar_id": {
      "description": "Move the event to this calendar id.",
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ]
    },
    "datetime_end": {
      "description": "End date-time (default: start + 1 hour). Same formats as the start.",
      "type": "string"
    },
    "all_day_event": {
      "description": "All-day event: only the dates are used.",
      "type": "boolean"
    },
    "timezone": {
      "description": "IANA timezone for the start/end (default: the calendar's timezone), or 'floating'.",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "recurring_rule": {
      "description": "iCalendar recurrence rule such as FREQ=WEEKLY;COUNT=10. The start must match the rule. Omit for a one-off event; on update an empty string makes the event stop repeating.",
      "type": "string",
      "maxLength": 500
    },
    "description": {
      "description": "Plain text or simple HTML (keep under ~500 characters for cross-browser links).",
      "type": "string",
      "maxLength": 10000
    },
    "internal_name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Internal name, never shown publicly."
    },
    "location": {
      "description": "Address or URL (meeting link). Use either location or location_id, not both.",
      "type": "string",
      "maxLength": 1000
    },
    "location_id": {
      "description": "Id of a saved location (0 = none). Not together with location.",
      "type": "integer",
      "minimum": 0,
      "maximum": 9007199254740991
    },
    "organizer_name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Organizer name (needs organizer_email)."
    },
    "organizer_email": {
      "description": "Organizer e-mail (needs organizer_name).",
      "type": "string",
      "maxLength": 254,
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$"
    },
    "reminder": {
      "description": "Minutes before the start for a calendar-app reminder (0-10800).",
      "type": "integer",
      "minimum": 0,
      "maximum": 10800
    },
    "color": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20,
      "description": "Color 1-20 from the palette."
    },
    "free_busy": {
      "description": "How the event shows in an attendee's calendar.",
      "type": "string",
      "enum": [
        "free",
        "busy",
        "default"
      ]
    },
    "landing_page_template_id": {
      "description": "Event landing page template id or 'default' (see addevent_list_event_templates).",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "rsvp_enabled": {
      "description": "Require an RSVP before the event can be added to a calendar.",
      "type": "boolean"
    },
    "rsvp_form_id": {
      "description": "RSVP form id or 'default' (see addevent_list_rsvp_forms).",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "custom_data": {
      "type": "object",
      "propertyNames": {
        "type": "string",
        "minLength": 1,
        "maxLength": 100
      },
      "additionalProperties": {
        "anyOf": [
          {
            "type": "string",
            "maxLength": 2000
          },
          {
            "type": "number"
          },
          {
            "type": "boolean"
          },
          {
            "type": "null"
          }
        ]
      },
      "description": "Arbitrary key-value pairs to store on the object (snake_case keys), e.g. an external id."
    }
  },
  "required": [
    "event_id"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_list_rsvp_attendees(event_ids, calendar_ids, attending, sort_by, sort_order, ...)

List RSVP attendees (personal data: e-mail addresses and the answers they gave on the RSVP form). Filter by calendar, event or response (going/maybe/not-going). Paged, 20 at most per page: read only what the task needs. IP address and coordinates are removed from the reply. GET /rsvps.

Input Schema

{
  "type": "object",
  "properties": {
    "event_ids": {
      "description": "Only attendees of these event ids.",
      "minItems": 1,
      "maxItems": 50,
      "type": "array",
      "items": {
        "anyOf": [
          {
            "type": "string",
            "minLength": 1,
            "maxLength": 100,
            "pattern": "^\\S+$"
          },
          {
            "type": "integer",
            "exclusiveMinimum": 0,
            "maximum": 9007199254740991
          }
        ],
        "description": "The id (text or number)."
      }
    },
    "calendar_ids": {
      "description": "Only attendees of events on these calendar ids.",
      "minItems": 1,
      "maxItems": 50,
      "type": "array",
      "items": {
        "anyOf": [
          {
            "type": "string",
            "minLength": 1,
            "maxLength": 100,
            "pattern": "^\\S+$"
          },
          {
            "type": "integer",
            "exclusiveMinimum": 0,
            "maximum": 9007199254740991
          }
        ],
        "description": "The id (text or number)."
      }
    },
    "attending": {
      "description": "Only attendees with this response.",
      "type": "string",
      "enum": [
        "going",
        "maybe",
        "not-going"
      ]
    },
    "sort_by": {
      "type": "string",
      "enum": [
        "created",
        "event_id",
        "attending",
        "email"
      ]
    },
    "sort_order": {
      "description": "Sort direction. Needs sort_by.",
      "type": "string",
      "enum": [
        "asc",
        "desc"
      ]
    },
    "page": {
      "description": "Page number, from 1 (default 1). Pass the previous reply's next_page.",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 100000
    },
    "page_size": {
      "description": "Results per page, 1-20 (default 10).",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 20
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_get_rsvp_attendee(attendee_id)

One RSVP attendee by id (personal data: e-mail and form answers; IP address and coordinates removed). GET /rsvps/{id}.

Input Schema

{
  "type": "object",
  "properties": {
    "attendee_id": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ],
      "description": "RSVP attendee id (see addevent_list_rsvp_attendees)."
    }
  },
  "required": [
    "attendee_id"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟡addevent_create_rsvp_attendee(event_id, email, attending, rsvp_form_data)

WRITE: adds ONE RSVP attendee (one e-mail address, personal data) to an event. This server never asks AddEvent to send the confirmation or organizer notification e-mails, but the event's own reminder and follow-up e-mails (if the event has them) will later go to this address, so only add someone who really RSVP'd. The e-mail must be unique per event. POST /events/{id}/rsvps.

Input Schema

{
  "type": "object",
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ],
      "description": "Event id (evt-...) to RSVP to."
    },
    "email": {
      "type": "string",
      "maxLength": 254,
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
      "description": "Attendee e-mail address (unique per event)."
    },
    "attending": {
      "description": "The attendee's response.",
      "type": "string",
      "enum": [
        "going",
        "maybe",
        "not-going"
      ]
    },
    "rsvp_form_data": {
      "type": "object",
      "propertyNames": {
        "type": "string",
        "minLength": 1,
        "maxLength": 100
      },
      "additionalProperties": {
        "anyOf": [
          {
            "type": "string",
            "maxLength": 2000
          },
          {
            "type": "number"
          },
          {
            "type": "boolean"
          },
          {
            "type": "null"
          }
        ]
      },
      "description": "Answers to the event's RSVP form as field-name -> value. The default form needs {\"name\": \"...\"}."
    }
  },
  "required": [
    "event_id",
    "email"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🔴addevent_update_rsvp_attendee(attendee_id, email, attending, rsvp_form_data)

WRITE: changes ONE RSVP attendee (email, response or form answers; only the fields you pass). The event's reminder and update e-mails go to the e-mail address stored here, so changing it redirects those e-mails to that person. This server never triggers the confirmation or organizer notification e-mails. PATCH /rsvps/{id}.

Input Schema

{
  "type": "object",
  "properties": {
    "attendee_id": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ],
      "description": "RSVP attendee id."
    },
    "email": {
      "description": "New e-mail address.",
      "type": "string",
      "maxLength": 254,
      "format": "email",
      "pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$"
    },
    "attending": {
      "type": "string",
      "enum": [
        "going",
        "maybe",
        "not-going"
      ]
    },
    "rsvp_form_data": {
      "type": "object",
      "propertyNames": {
        "type": "string",
        "minLength": 1,
        "maxLength": 100
      },
      "additionalProperties": {
        "anyOf": [
          {
            "type": "string",
            "maxLength": 2000
          },
          {
            "type": "number"
          },
          {
            "type": "boolean"
          },
          {
            "type": "null"
          }
        ]
      },
      "description": "Answers to the event's RSVP form as field-name -> value. The default form needs {\"name\": \"...\"}."
    }
  },
  "required": [
    "attendee_id"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_list_calendar_subscribers(calendar_ids, status, sort_by, sort_order, page, ...)

List people subscribed to the account's calendars (personal data: the form answers they gave, such as name and e-mail; calendar app type, sync status). Paged, 20 at most per page. IP address and coordinates are removed. GET /subscribers.

Input Schema

{
  "type": "object",
  "properties": {
    "calendar_ids": {
      "description": "Only subscribers of these calendar ids.",
      "minItems": 1,
      "maxItems": 50,
      "type": "array",
      "items": {
        "anyOf": [
          {
            "type": "string",
            "minLength": 1,
            "maxLength": 100,
            "pattern": "^\\S+$"
          },
          {
            "type": "integer",
            "exclusiveMinimum": 0,
            "maximum": 9007199254740991
          }
        ],
        "description": "The id (text or number)."
      }
    },
    "status": {
      "description": "active = synced in the last 30 days; inactive = not; blocked = blocked by the owner. AddEvent returns only active ones when omitted, so call once per status.",
      "type": "string",
      "enum": [
        "active",
        "inactive",
        "blocked"
      ]
    },
    "sort_by": {
      "type": "string",
      "enum": [
        "created",
        "synced",
        "calendar_id"
      ]
    },
    "sort_order": {
      "description": "Sort direction. Needs sort_by.",
      "type": "string",
      "enum": [
        "asc",
        "desc"
      ]
    },
    "page": {
      "description": "Page number, from 1 (default 1). Pass the previous reply's next_page.",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 100000
    },
    "page_size": {
      "description": "Results per page, 1-20 (default 10).",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 20
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_get_calendar_subscriber(subscriber_id)

One calendar subscriber by id (personal data; IP address and coordinates removed). GET /subscribers/{id}.

Input Schema

{
  "type": "object",
  "properties": {
    "subscriber_id": {
      "anyOf": [
        {
          "type": "string",
          "minLength": 1,
          "maxLength": 100,
          "pattern": "^\\S+$"
        },
        {
          "type": "integer",
          "exclusiveMinimum": 0,
          "maximum": 9007199254740991
        }
      ],
      "description": "Subscriber id (see addevent_list_calendar_subscribers)."
    }
  },
  "required": [
    "subscriber_id"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_list_rsvp_forms

The account's RSVP forms (id, name), newest first. Use the id as rsvp_form_id on an event. GET /events/rsvp-forms.

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_list_event_templates

The account's event landing page templates (id, name), newest first. Use the id as landing_page_template_id on an event. GET /events/templates.

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_list_calendar_templates(type)

The account's calendar landing page templates or embeddable calendar templates (id, name), newest first. Use the id as landing_page_template_id / embeddable_calendar_template_id on a calendar. GET /calendars/templates.

Input Schema

{
  "type": "object",
  "properties": {
    "type": {
      "description": "calendar-landing (default) or calendar-embed (embeddable calendars).",
      "type": "string",
      "enum": [
        "calendar-landing",
        "calendar-embed"
      ]
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢addevent_list_timezones(search, limit)

Timezone names AddEvent supports (use them as the timezone of events and calendars), with current UTC offset. Optional text filter on the name. GET /timezones.

Input Schema

{
  "type": "object",
  "properties": {
    "search": {
      "description": "Case-insensitive part of the name, e.g. 'Prague' or 'America/'.",
      "type": "string",
      "minLength": 1,
      "maxLength": 100
    },
    "limit": {
      "description": "Most entries to return (default 100).",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 500
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}

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