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Evenium MCP by usefulapi

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Read Evenium events, guests, contacts and hotels; register guests and update contacts and statuses.

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evenium_create_contact

WRITE: add a contact to the address book (name, email, company, optional custom id and fields). Does not invite them to an event (use evenium_create_guest). May create a duplicate of an existing person: search with evenium_list_contacts first. POST /contacts.

last_namestring, required

emailstring

fieldsarray

Extra contact fields as {name, value} pairs.

genderstring

companystring

custom_idstring

Your own id for this contact (later usable as `ext:<id>`).

first_namestring

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Evenium MCP by usefulapi MCP server | mcptry

Tools (19)

evenium_create_contact

Argument	Type	Description
email	string
fields	array	Extra contact fields as {name, value} pairs.
gender	string
company	string
custom_id	string	Your own id for this contact (later usable as `ext:<id>`).
last_name*	string
first_name	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "last_name"
  ],
  "properties": {
    "email": {
      "type": "string",
      "maxLength": 320,
      "minLength": 3
    },
    "fields": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "name",
          "value"
        ],
        "properties": {
          "name": {
            "type": "string",
            "maxLength": 100,
            "minLength": 1,
            "description": "Field name, e.g. FUNCTION, MOBILE_PHONE_NUMBER, ADDR_CITY, or a numeric custom-field code."
          },
          "value": {
            "type": "string",
            "maxLength": 2000
          }
        }
      },
      "maxItems": 100,
      "description": "Extra contact fields as {name, value} pairs."
    },
    "gender": {
      "enum": [
        "MALE",
        "FEMALE"
      ],
      "type": "string"
    },
    "company": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
    },
    "custom_id": {
      "type": "string",
      "maxLength": 200,
      "minLength": 1,
      "description": "Your own id for this contact (later usable as `ext:<id>`)."
    },
    "last_name": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
    },
    "first_name": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
    }
  }
}

evenium_create_guest

WRITE: invite a person to an event. Either invite an existing contact (contact_id) or create a guest from scratch (first_name, last_name, email, ...), which may also create a new contact. The optional status sets the registration status (the invitation emails of the event may follow Evenium's own rules). POST /events/{eventId}/guests.

Argument	Type	Description
email	string
gender	string
status	string	Registration status to give the guest (default chosen by Evenium).
company	string
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
last_name	string
contact_id	integer	Evenium contact id of an existing contact to invite. If set, the name fields are ignored.
first_name	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id"
  ],
  "properties": {
    "email": {
      "type": "string",
      "maxLength": 320,
      "minLength": 3
    },
    "gender": {
      "enum": [
        "MALE",
        "FEMALE"
      ],
      "type": "string"
    },
    "status": {
      "enum": [
        "UNANSWERED",
        "PENDING",
        "CONFIRMED",
        "VALID",
        "RESERVED",
        "OVERBOOKED",
        "EXTRA",
        "DECLINED",
        "CANCELED"
      ],
      "type": "string",
      "description": "Registration status to give the guest (default chosen by Evenium)."
    },
    "company": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
    },
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "last_name": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
    },
    "contact_id": {
      "type": "integer",
      "maximum": 9007199254740991,
      "description": "Evenium contact id of an existing contact to invite. If set, the name fields are ignored.",
      "exclusiveMinimum": 0
    },
    "first_name": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
    }
  }
}

evenium_get_contact

One contact by Evenium id or `ext:<customId>`: name, gender, email, company and fields. GET /contacts/{contactId}.

read-only

Argument	Type	Description
contact_id*	any	Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "contact_id"
  ],
  "properties": {
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`."
    }
  }
}

evenium_get_contact_events

The events a contact is invited to, with the contact's registration (status, post status, category) in each. Filter by event start, end or creation date. GET /contacts/{contactId}/events.

read-only

Argument	Type	Description
contact_id*	any	Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
ends_after	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
ends_before	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
starts_after	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
created_after	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
starts_before	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).

evenium_get_event

One event by id: title, description, dates, status, site path and its fields (type, your external id, ...). GET /events/{eventId}.

read-only

Argument	Type	Description
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id"
  ],
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    }
  }
}

evenium_get_event_part

One event part (session) by id: title, dates, nature, code, location and fields. GET /events/{eventId}/eventParts/{eventPartId}.

read-only

Argument	Type	Description
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
event_part_id*	any	Event part (session) id, from evenium_list_event_parts.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id",
    "event_part_id"
  ],
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "event_part_id": {
      "anyOf": [
        {
          "type": "string",
          "pattern": "^\\d{1,20}$"
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Event part (session) id, from evenium_list_event_parts."
    }
  }
}

evenium_get_guest

One guest of an event, by contact id or by guest code: name, email, status, category and fields (event-only fields flagged). Optionally include REGISTRATION (registrations to sessions), PRESENCE and SIGNATURE data. GET /events/{eventId}/guests/{contactId} or /guests/guestCode/{guestCode}.

read-only

Argument	Type	Description
include	array	Extra data to return.
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
contact_id	any	The guest's contact id. Give this or guest_code.
guest_code	string	The guest's code at the event (e.g. D4571). Give this or contact_id.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id"
  ],
  "properties": {
    "include": {
      "type": "array",
      "items": {
        "enum": [
          "REGISTRATION",
          "PRESENCE",
          "SIGNATURE"
        ],
        "type": "string"
      },
      "maxItems": 3,
      "description": "Extra data to return."
    },
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "The guest's contact id. Give this or guest_code."
    },
    "guest_code": {
      "type": "string",
      "maxLength": 100,
      "minLength": 1,
      "description": "The guest's code at the event (e.g. D4571). Give this or contact_id."
    }
  }
}

evenium_get_guest_accommodations

The hotel room bookings of one guest at an event: room id, check-in and check-out dates, status. Not available on the evenium.net platform. GET /events/{eventId}/guests/{contactId}/accommodations.

read-only

Argument	Type	Description
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
contact_id*	any	Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id",
    "contact_id"
  ],
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`."
    }
  }
}

evenium_get_guest_post_status

The attendance (post) status of one guest after the event: UNKNOWN, NO_SHOW or PRESENT. GET /events/{eventId}/guests/{contactId}/postStatus.

read-only

Argument	Type	Description
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
contact_id*	any	Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id",
    "contact_id"
  ],
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`."
    }
  }
}

evenium_get_guest_status

The registration status of one guest at an event (e.g. CONFIRMED, DECLINED, CANCELED). GET /events/{eventId}/guests/{contactId}/status.

read-only

Argument	Type	Description
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
contact_id*	any	Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id",
    "contact_id"
  ],
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`."
    }
  }
}

evenium_list_contacts

List the contacts of the address book (id, your custom id, name, email, company and fields). Filter by name, email, company or last update. GET /contacts.

read-only

Argument	Type	Description
email	string	Email equal to this.
company	string	Company like this text.
last_name	string	Last name like this text.
first_name	string	First name like this text.
max_results	integer	Results per page, 1-100 (default 25).
first_result	integer	Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
updated_since	string	Only contacts updated after this date (RFC 3339).

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "email": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "Email equal to this."
    },
    "company": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "Company like this text."
    },
    "last_name": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "Last name like this text."
    },
    "first_name": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "First name like this text."
    },
    "max_results": {
      "type": "integer",
      "maximum": 100,
      "description": "Results per page, 1-100 (default 25).",
      "exclusiveMinimum": 0
    },
    "first_result": {
      "type": "integer",
      "maximum": 10000000,
      "minimum": 0,
      "description": "Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result."
    },
    "updated_since": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "Only contacts updated after this date (RFC 3339)."
    }
  }
}

evenium_list_event_part_registrations

The registrations to one session: contact id, status, attendance, category and dates. With include_deleted, deleted registrations are returned too (status DELETED). GET /events/{eventId}/eventParts/{eventPartId}/registrations.

read-only

Argument	Type	Description
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
max_results	integer	Results per page, 1-100 (default 25).
first_result	integer	Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
event_part_id*	any	Event part (session) id, from evenium_list_event_parts.
updated_since	string	Only registrations updated after this date (RFC 3339).
include_deleted	boolean	Also return deleted registrations (queryMode=SYNCHRONIZE).

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id",
    "event_part_id"
  ],
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "max_results": {
      "type": "integer",
      "maximum": 100,
      "description": "Results per page, 1-100 (default 25).",
      "exclusiveMinimum": 0
    },
    "first_result": {
      "type": "integer",
      "maximum": 10000000,
      "minimum": 0,
      "description": "Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result."
    },
    "event_part_id": {
      "anyOf": [
        {
          "type": "string",
          "pattern": "^\\d{1,20}$"
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Event part (session) id, from evenium_list_event_parts."
    },
    "updated_since": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "Only registrations updated after this date (RFC 3339)."
    },
    "include_deleted": {
      "type": "boolean",
      "description": "Also return deleted registrations (queryMode=SYNCHRONIZE)."
    }
  }
}

evenium_list_event_parts

List the event parts (sessions, workshops, activities) of an event with title, dates, nature, code and location. Filter by title and start/end/update dates. GET /events/{eventId}/eventParts.

read-only

Argument	Type	Description
title	string	Sessions whose title is like this text.
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
ends_after	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
ends_before	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
max_results	integer	Results per page, 1-100 (default 25).
first_result	integer	Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
starts_after	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).

evenium_list_events

List the events of the Evenium account, with id, title, dates, status and creation date. Filter by title (partial match), status and start/end/creation dates. Use an event id with the guest and session tools. GET /events.

read-only

Argument	Type	Description
title	string	Events whose title is like this text.
status	string	FUTURE = open, DRAFT, CLOSED, ARCHIVED, CANCELED, DELETED, CLONEABLE = template.
ends_after	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
ends_before	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).
max_results	integer	Results per page, 1-100 (default 25).
first_result	integer	Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
starts_after	string	RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time).

evenium_list_guests

List the guests (invited contacts) of an event with name, email, company, registration status (e.g. CONFIRMED, DECLINED, UNANSWERED), category and fields. Filter by status, name, email, company or last update. GET /events/{eventId}/guests.

read-only

Argument	Type	Description
email	string	Email equal to this.
status	string	Only guests with exactly this registration status.
company	string	Company like this text.
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
last_name	string	Last name like this text.
first_name	string	First name like this text.
max_results	integer	Results per page, 1-100 (default 25).
first_result	integer	Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result.
updated_since

evenium_list_hotels

The hotels of an event with name, group, stars, contact details and, if asked, full location and rooms. Not available on the evenium.net platform. GET /events/{eventId}/hotels.

read-only

Argument	Type	Description
include	array	Extra hotel properties: location (full address), rooms (room list).
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id"
  ],
  "properties": {
    "include": {
      "type": "array",
      "items": {
        "enum": [
          "location",
          "rooms"
        ],
        "type": "string"
      },
      "maxItems": 2,
      "description": "Extra hotel properties: location (full address), rooms (room list)."
    },
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    }
  }
}

evenium_update_contact

WRITE: change a contact's email, company or fields (only what you pass is sent). The change applies to the contact everywhere, including its guest records. PUT /contacts/{contactId}.

destructive

Argument	Type	Description
email	string
fields	array	Extra contact fields as {name, value} pairs.
company	string
contact_id*	any	Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "contact_id"
  ],
  "properties": {
    "email": {
      "type": "string",
      "maxLength": 320,
      "minLength": 3
    },
    "fields": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "name",
          "value"
        ],
        "properties": {
          "name": {
            "type": "string",
            "maxLength": 100,
            "minLength": 1,
            "description": "Field name, e.g. FUNCTION, MOBILE_PHONE_NUMBER, ADDR_CITY, or a numeric custom-field code."
          },
          "value": {
            "type": "string",
            "maxLength": 2000
          }
        }
      },
      "maxItems": 100,
      "description": "Extra contact fields as {name, value} pairs."
    },
    "company": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1
    },
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`."
    }
  }
}

evenium_update_guest_post_status

WRITE: set the attendance (post) status of a guest: PRESENT, NO_SHOW or UNKNOWN (for example after check-in). PUT /events/{eventId}/guests/{contactId}/postStatus.

destructive

Argument	Type	Description
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
contact_id*	any	Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.
post_status*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id",
    "contact_id",
    "post_status"
  ],
  "properties": {
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`."
    },
    "post_status": {
      "enum": [
        "UNKNOWN",
        "NO_SHOW",
        "PRESENT"
      ],
      "type": "string"
    }
  }
}

evenium_update_guest_status

WRITE: set the registration status of a guest at an event (e.g. CONFIRMED, DECLINED, CANCELED). Can trigger Evenium's own workflows for that status. Read the current value first with evenium_get_guest_status. PUT /events/{eventId}/guests/{contactId}/status.

destructive

Argument	Type	Description
status*	string
event_id*	any	Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field).
contact_id*	any	Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id",
    "contact_id",
    "status"
  ],
  "properties": {
    "status": {
      "enum": [
        "UNANSWERED",
        "PENDING",
        "CONFIRMED",
        "VALID",
        "RESERVED",
        "OVERBOOKED",
        "EXTRA",
        "DECLINED",
        "CANCELED"
      ],
      "type": "string"
    },
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`."
    }
  }
}

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "contact_id"
  ],
  "properties": {
    "contact_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium contact id (e.g. 1102365; the guest's contactId), or `ext:<your own customId>`."
    },
    "ends_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "ends_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "starts_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "created_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "starts_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "created_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    }
  }
}

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id"
  ],
  "properties": {
    "title": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "Sessions whose title is like this text."
    },
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "ends_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "ends_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "max_results": {
      "type": "integer",
      "maximum": 100,
      "description": "Results per page, 1-100 (default 25).",
      "exclusiveMinimum": 0
    },
    "first_result": {
      "type": "integer",
      "maximum": 10000000,
      "minimum": 0,
      "description": "Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result."
    },
    "starts_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "starts_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "updated_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "updated_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    }
  }
}

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "title": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "Events whose title is like this text."
    },
    "status": {
      "enum": [
        "FUTURE",
        "DRAFT",
        "CLOSED",
        "ARCHIVED",
        "CANCELED",
        "DELETED",
        "CLONEABLE"
      ],
      "type": "string",
      "description": "FUTURE = open, DRAFT, CLOSED, ARCHIVED, CANCELED, DELETED, CLONEABLE = template."
    },
    "ends_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "ends_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "max_results": {
      "type": "integer",
      "maximum": 100,
      "description": "Results per page, 1-100 (default 25).",
      "exclusiveMinimum": 0
    },
    "first_result": {
      "type": "integer",
      "maximum": 10000000,
      "minimum": 0,
      "description": "Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result."
    },
    "starts_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "created_after": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "starts_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    },
    "created_before": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "RFC 3339 date or date-time, UTC preferred, e.g. 2026-10-01Z or 2026-10-01T09:00:00Z (without a timezone Evenium uses Central European Time)."
    }
  }
}

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "event_id"
  ],
  "properties": {
    "email": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "Email equal to this."
    },
    "status": {
      "enum": [
        "UNANSWERED",
        "PENDING",
        "CONFIRMED",
        "VALID",
        "RESERVED",
        "OVERBOOKED",
        "EXTRA",
        "DECLINED",
        "CANCELED",
        "DELETED",
        "REPLACED"
      ],
      "type": "string",
      "description": "Only guests with exactly this registration status."
    },
    "company": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "Company like this text."
    },
    "event_id": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200,
          "minLength": 1
        },
        {
          "type": "integer",
          "maximum": 9007199254740991,
          "exclusiveMinimum": 0
        }
      ],
      "description": "Evenium event id (e.g. 12458), or `ext:<your own event id>` (the EXT_EVENT_ID field)."
    },
    "last_name": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "Last name like this text."
    },
    "first_name": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "First name like this text."
    },
    "max_results": {
      "type": "integer",
      "maximum": 100,
      "description": "Results per page, 1-100 (default 25).",
      "exclusiveMinimum": 0
    },
    "first_result": {
      "type": "integer",
      "maximum": 10000000,
      "minimum": 0,
      "description": "Index of the first result, from 0 (default 0). Pass the previous reply's next_first_result."
    },
    "updated_since": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "Only guests updated after this date (RFC 3339)."
    },
    "updated_until": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(?:T\\d{2}:\\d{2}(?::\\d{2}(?:\\.\\d{1,9})?)?)?(?:Z|[+-]\\d{2}:\\d{2})?$",
      "maxLength": 40,
      "description": "Only guests updated until this date (RFC 3339)."
    }
  }
}