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  1. Welcome to Uptime 👋
  2. Frequently Asked Questions
  3. Monitoring
    1. Get started with monitoring
    2. Working with monitors
    3. Customizing monitors
    4. Monitor types
  4. On-call scheduling and alerting
    1. Get started with on-call
    2. Sending alerts to Slack ↗
    3. Connecting external calendars
    4. Advanced on-call setup
  5. Incidents
    1. Working with incidents
    2. Create incidents manually
    3. Post mortems
    4. Incident silencing
    5. Incident metadata
  6. Status pages
    1. Get started with status pages
    2. Working with status pages
  7. Integrations
    1. Integrating with Better Stack
  8. Team and account management
    1. Team management
    2. Account settings
    3. Audit logs
    4. Migrating to pay as you go
  9. API
    1. Get started with API
  10. Monitors API
    1. Monitors
    2. Monitor groups
    3. Heartbeats
    4. Heartbeat groups
  11. On-call & Incidents API
    1. On-call calendar
    2. On-call calendar events
      1. List on-call calendar events GET
      2. Get on-call calendar event GET
      3. Create on-call calendar event POST
      4. Update on-call calendar event PATCH
      5. Delete on-call calendar event DELETE
      6. Bulk update on-call calendar events PUT
      7. On-call calendar events API response params
    3. Escalation policies
    4. Escalation policy groups
    5. Severities
    6. Severity groups
    7. Incidents
    8. Comments
  12. Integrations API
    1. New Relic Integrations
    2. Datadog Integrations
    3. AWS CloudWatch Integrations
    4. Azure Integrations
    5. Google Monitoring Integrations
    6. Grafana Integrations
    7. Prometheus Integrations
    8. Email integrations
    9. Incoming webhooks
    10. Slack Integrations
    11. Splunk On-Call integrations
    12. PagerDuty Integrations
  13. Status pages API
    1. Status pages
    2. Status page sections
    3. Status page resources
    4. Status page reports
    5. Status page report updates
  14. Other API
    1. Metadata

Update a single on-call calendar event

Update a single event in the given on-call calendar.

Events starting sooner than today at 0:00 UTC can't be updated.

PATCH https://uptime.betterstack.com/api/v2/on-calls/{calendar_id}/events/{event_id}

URL parameters

calendar_id
required string

The ID of the on-call calendar that the event is part of. Use default to refer to the default on-call calendar for the team.

event_id
required string

The ID of the event you want to update.

Headers

Authorization
required string

Bearer $TOKEN

Body parameters

starts_at
date

Start time of the event. Must be today at 0:00 UTC or later.

ends_at
date

End time of the event

users
array

List of email addresses of the users that will be on-call during this event

200

Event was updated

Response body

{
  "id": 12345678,
  "starts_at": "2025-01-01T09:45:00Z",
  "ends_at": "2025-01-01T17:00:00",
  "users": [
    "tomas@betterstack.com"
  ]
}
422

Event was not updated

Response body

{
  "errors": {
    "base": [
      "events ending before today at 00:00 UTC can't be updated or deleted"
    ]
  }
}

Example cURL

Example
curl --request PATCH \
  --url "https://uptime.betterstack.com/api/v2/on-calls/default/events/12345678" \
  --header "Authorization: Bearer $TOKEN" \
  --header "Content-Type: application/json" \
  --data '{"starts_at":"2025-01-01T09:45:00Z"}'

Previous article

Create an on-call calendar event

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Delete on-call calendar event