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REST API: Add Users to an Event as Attendees | Axero Documentation

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REST API: Add Users to an Event As Attendees

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Open API Guide
POST/api/events/{EventID}/users

Add individual users to an event as invitees or attendees

Request

Request Header

HeaderRequiredValueDescription
AuthorizationYESBearer YOUR_TOKENBearer token for the authenticated user. Learn how to create Bearer tokens
Content-TypeYESapplication/jsonMust be set to application/json

Required Parameters

ParameterTypeRequiredLocationDescription
EventIDIntegerYESPathUnique ID of the event
IsCommunityUserBooleanYESBodySet to true if the user you are adding to the event is a registered user on the site. Set to false if the user you are adding to the event is not a registered user
UserIDIntegerYESBodyUser ID of the user you are adding to the event
AttendanceTypeIntegerYESBody1: Attending 2: Maybe attending 3: Not attending

Example

Request Header

Authorization: Bearer YOUR_TOKEN
Content-Type: application/json

Request URL

https://your-site.com/api/events/670/users

Request Body

[{"IsCommunityUser":true,"UserID":"614","AttendanceType":1}]

Success Response

{
  "IsError": false,
  "ResponseMessage": "The request was processed successfully.",
  "ResponseData": true
}

Error Response

{
  "IsError": true,
  "ResponseMessage": "Required parameter is missing or invalid.",
  "ResponseData": null
}

Error Handling

Status CodeLikely CauseNext Action
400 Bad RequestOne or more required fields are missing or invalid. (eventID, users)Verify the request payload against the required parameters.
401 UnauthorizedMissing or invalid Bearer token.Check token validity. Learn how to create Bearer tokens →
403 ForbiddenUser does not have sufficient permissions.Confirm the user has the required roles for this action.
404 Not FoundThe specified event was not found.Verify the eventID is correct.
500 Server ErrorInternal failure.Retry later.

Rate Limits

While Axero does not enforce hard rate limits by default, we recommend the following best practices to ensure optimal performance:

  • Sustained Request Rate: Do not exceed 5 API calls per second
  • Sequential Processing: Wait for each request to complete before sending the next in automated workflows
  • Concurrent Connections: If parallel processing is required, limit to 3 or fewer simultaneous requests
  • Response Timeout: Ensure API responses complete within 15 seconds during testing

Axero may implement temporary rate restrictions if excessive API usage affects overall site performance. For high-volume integrations, contact Axero to discuss your requirements.

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