> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://docs.agentmail.to/llms.txt. # Delete Event DELETE https://api.agentmail.to/v0/inboxes/{inbox_id}/calendar/events/{event_id} Deletes an event, or cancels dates of a recurring event. * **One-off or series UUID:** deletes the event and every date of it. The event disappears from reads immediately and is removed in the background; the response is `202` with a `deletion_id`. A retry returns the same `deletion_id` while removal runs (send the same `Idempotency-Key`, or none and the same `send_invites`); once it has finished, the event no longer exists and a retry returns `404`. No `calendar.event.starting` or `calendar.event.ending` webhook is sent for the event after the delete is accepted. * **Dated ID (`_`):** cancels that date (`mode=single`, the default) or that date and every later date (`mode=future`). Returns `202` with the cancelled date. A `mode=future` delete from the first date deletes the whole series and returns a `deletion_id` instead. A date that is already running still gets its `calendar.event.ending`. Deleting a one-off or series event sends `calendar.event.deleted`. Cancelling dates sends `calendar.event.updated` with the cancelled date. With `send_invites=true` the organizer inbox also emails a cancellation to every attendee. Requires the `calendar_event_delete` permission. To make the delete conditional, send the current `etag` in `If-Match`. Emailing cancellations counts one send per attendee against the organization, pod and inbox send limits, charged before the delete; an over-limit request returns `429` `rate_limit_exceeded` and deletes nothing. Calendar is in private beta in US production (`api.agentmail.to`). It is unavailable in EU production (`api.agentmail.eu`). Organizations without access receive a `403`. Reference: https://docs.agentmail.to/api-reference/inboxes/calendar/delete-event ## Authentication - `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer `, where token is your auth token. ## Servers - `https://api.agentmail.to` (prod, default) - `https://x402.api.agentmail.to` (prod-x402) - `https://mpp.api.agentmail.to` (prod-mpp) - `https://api.agentmail.eu` (eu-prod) ## Request ### Path parameters - `inbox_id` (string, required) — The ID of the inbox. - `event_id` (string, required) — ID of a calendar event. A one-off or recurring event is addressed by its UUID. One date of a recurring event is addressed by a dated ID, `_`: `_t20261015T090000` for a timed date (the original wall-clock start in the event's time zone) or `_d20261015` for an all-day date. Dated IDs are stable: moving a date keeps its original ID. ### Query parameters - `mode` (enum, optional) — Which dates a change to a dated event applies to. `single` (default) changes only this date. `future` changes this date and every later date of the series. Applies only to dated event IDs; sending `mode` with a one-off or series UUID is a `400`. - Allowed values: `single`, `future` - `send_invites` (boolean, optional) — When `true`, emails a cancellation (iCalendar `CANCEL`) to every attendee. Only the organizer can send. Defaults to `false`. ### Headers - `If-Match` (string, optional) — The event's or date's current `etag`. Optional; makes the delete conditional; `*` matches any current version. - `Idempotency-Key` (string, optional) — 1 to 128 visible ASCII characters. Optional. Retrying a delete with the same key returns the original result; without a key, retries of the same delete share one derived from the event and `send_invites`, so a keyless retry that changes `send_invites` is a different delete and returns `404` while removal runs. Keys are unique across your organization: reusing one to delete a different event returns `409` `idempotency_conflict`. ## Response ### 202 - `deletion_id` (string, optional) — ID of an accepted deletion. While the event is being removed, retrying the same delete (with the same `Idempotency-Key`, or none and the same `send_invites`) returns it again. Once removal has finished, a retry returns `404`. - `event` (CalendarEvent, optional) — A calendar event. The same shape is used by every response, list item and webhook. `kind` says whether it is a one-off event, the definition of a recurring series, or one date of a series. - `operation_id` (string, optional) — ID of the change this request made. The `calendar.event.created`, `calendar.event.updated`, `calendar.event.deleted` or `calendar.event.responded` webhook for the change carries the same value as its `event_id`, so you can match webhooks to your own requests. ## Errors ### 400 Validation Error - `name` (string, required) — Name of error. - `errors` (any, required) — Validation errors. Each entry has a path and a message identifying the invalid field. - `code` (string, optional) — Stable, machine-readable error code in snake_case (for example, not_found or missing_permission). Branch on this rather than the message text. - `message` (string, optional) — Error message. - `fix` (string, optional) — The concrete next action that resolves the error. - `docs` (string, optional) — Link to the error reference entry for this code. ### 403 Forbidden Error The organization does not have calendar access (calendar is in private beta), or the API key lacks the required calendar permission. - `name` (string, required) — Name of error. - `message` (string, required) — Error message. - `code` (string, optional) — Stable, machine-readable error code in snake_case (for example, not_found or missing_permission). Branch on this rather than the message text. - `fix` (string, optional) — The concrete next action that resolves the error. - `docs` (string, optional) — Link to the error reference entry for this code. ### 404 Not Found Error - `name` (string, required) — Name of error. - `message` (string, required) — Error message. - `code` (string, optional) — Stable, machine-readable error code in snake_case (for example, not_found or missing_permission). Branch on this rather than the message text. - `fix` (string, optional) — The concrete next action that resolves the error. - `docs` (string, optional) — Link to the error reference entry for this code. ### 409 Conflict Error - `name` (string, required) — Name of error. - `message` (string, required) — Error message. - `code` (string, optional) — Stable, machine-readable error code in snake_case (for example, not_found or missing_permission). Branch on this rather than the message text. - `fix` (string, optional) — The concrete next action that resolves the error. - `docs` (string, optional) — Link to the error reference entry for this code. ### 410 Event Expired Error The event's date is outside the retained history window and can no longer be read or changed. - `name` (string, required) — Name of error. - `message` (string, required) — Error message. - `code` (string, optional) — Stable, machine-readable error code in snake_case (for example, not_found or missing_permission). Branch on this rather than the message text. - `fix` (string, optional) — The concrete next action that resolves the error. - `docs` (string, optional) — Link to the error reference entry for this code. ### 412 Precondition Failed Error The resource changed since the `If-Match` value was read. Fetch it again, reapply the change, and retry with the new `etag`. - `name` (string, required) — Name of error. - `message` (string, required) — Error message. - `code` (string, optional) — Stable, machine-readable error code in snake_case (for example, not_found or missing_permission). Branch on this rather than the message text. - `current_revision` (integer, optional) — The resource's current revision. - `fix` (string, optional) — The concrete next action that resolves the error. - `docs` (string, optional) — Link to the error reference entry for this code. ### 429 Rate Limit Error Too many requests, or the invitation emails this request would send exceed an organization, pod or inbox send limit. Nothing was changed. Honor the `Retry-After` header when present. - `name` (string, required) — Name of error. - `message` (string, required) — Error message. - `code` (string, optional) — Stable, machine-readable error code in snake_case (for example, not_found or missing_permission). Branch on this rather than the message text. - `fix` (string, optional) — The concrete next action that resolves the error. - `docs` (string, optional) — Link to the error reference entry for this code. ## Types ### CalendarEvent A calendar event. The same shape is used by every response, list item and webhook. `kind` says whether it is a one-off event, the definition of a recurring series, or one date of a series. - `event_id` (string, required) — ID of a calendar event. A one-off or recurring event is addressed by its UUID. One date of a recurring event is addressed by a dated ID, `_`: `_t20261015T090000` for a timed date (the original wall-clock start in the event's time zone) or `_d20261015` for an all-day date. Dated IDs are stable: moving a date keeps its original ID. - `kind` (enum, required) — What the event object represents. - `single`: a one-off event, addressed by its UUID. - `series`: the definition of a recurring event, addressed by its UUID. It carries `recurrence`; `start` and `end` describe its first date. - `instance`: one date of a recurring event, addressed by its dated ID. It carries `series_id`, `original_start` and `is_exception`. - Allowed values: `single`, `series`, `instance` - `title` (string, required) — Title of the event. - `status` (enum, required) — Status of the event. A `cancelled` event or date stays readable but sends no `calendar.event.starting` or `calendar.event.ending` webhooks (cancelling a date that is already running still sends its `calendar.event.ending`). A date cancelled by deleting its dated ID is removed from the series instead, so reading it can return `404` or `410`. - Allowed values: `confirmed`, `tentative`, `cancelled` - `all_day` (boolean, required) — Whether this is an all-day event. - `start` (string, required) — Local start time in `timezone`. For all-day events, the first day. - `end` (string, required) — Local end time in `timezone`. For all-day events, the last day (inclusive). - `timezone` (string, required) — Canonical IANA time zone name, for example `America/New_York`, `Europe/London` or `UTC`. Abbreviations such as `PST`, Windows names such as `Pacific Standard Time`, and spellings that differ from the canonical name are rejected. - `duration_mode` (enum, required) — How the event's length is kept when a date crosses a daylight-saving change. - `exact`: the event lasts the same elapsed time. Default for one-off timed events. - `nominal`: the event keeps its wall-clock end time (a 09:00 to 10:00 meeting stays 09:00 to 10:00 local time). Default for recurring timed events. All-day events are always `nominal`. - Allowed values: `nominal`, `exact` - `duration_value` (integer, required) — Length of the event, in milliseconds for timed events and in days for all-day events. - `start_at` (datetime, required) — Start as a UTC instant. This is when `calendar.event.starting` is due. - `end_at` (datetime, required) — End as a UTC instant. This is when `calendar.event.ending` is due. - `attendee_count` (integer, required) — Number of attendees. - `uid` (string, required) — iCalendar UID of the event. Invitations about this event carry the same UID. - `sequence` (integer, required) — iCalendar SEQUENCE number. It increases when a change to a one-off or series event affects what attendees see (time, status, title, description, location, recurrence or attendees). A change to a dated event increases it only when the change is sent with `send_invites`. - `source` (enum, required) — Where the event came from. `api` events were created through this API and the inbox is their organizer. `email` events were created from a calendar invitation (iMIP) received by the inbox; their organizer is the sender of the invitation. - Allowed values: `api`, `email` - `created_at` (datetime, required) — Time at which the event (or, for a date, the definition governing it) was created. - `updated_at` (datetime, required) — Time at which the event (or, for a date, the definition governing it) was last updated. - `series_id` (string, optional) — For `instance` events, the UUID of the series this date belongs to. - `original_start` (string, optional) — For `instance` events, the date's start as the series rule generated it, before any edit. - `original_start_at` (datetime, optional) — For `instance` events, `original_start` as a UTC instant. - `is_exception` (boolean, optional) — For `instance` events, `true` when this date was edited or moved, individually or by a `mode=future` change. - `description` (string, optional) — Description of the event. Omitted from agenda and instance list items. - `location` (string, optional) — Location of the event. - `metadata` (any, optional) — Your own JSON value for the event, usually an object. Never sent to attendees. Omitted from agenda and instance list items. - `recurrence` (Recurrence, optional) — For `series` events, the recurrence. - `attendees` (list of Attendee, optional) — Attendees of the event. Omitted from agenda and instance list items; `attendee_count` is always present. - `organizer_email` (string, optional) — Email address of the organizer. For `api` events, the inbox. - `origin_message_id` (string, optional) — For `email` events, the ID of the message whose invitation last created or updated the event. - `resource_revision` (integer, optional) — Present on `single` and `series` events, except agenda items and `calendar.event.starting` and `calendar.event.ending` payloads, which omit it. - `etag` (string, optional) — The event's or date's current version, also sent as the `ETag` response header. Send it in `If-Match` to make an update, delete or response conditional. Present on Get, Create, Update, Delete and Respond responses; list items and webhooks omit it. Treat it as opaque: a dated event's `etag` (`"occ-..."`) is not derived from `resource_revision`. ### Recurrence The recurrence of a series, as stored. - `rule` (string, required) — Normalized RRULE body, without the `RRULE:` prefix. - `exdates` (list of string, optional) - `rdates` (list of RecurrenceDate, optional) - `truncate_before` (string, optional) — Set when the series was ended with a `mode=future` delete: no date starting at or after this wall-clock time occurs. ### Attendee - `email` (string, required) — Email address of the attendee. Stored in lowercase. Must be unique within the event. - `name` (string, optional) — Display name of the attendee. At most 256 characters. - `status` (enum, optional) — Response status. Defaults to `needs_action`. - Allowed values: `needs_action`, `accepted`, `declined`, `tentative` - `role` (enum, optional) — Defaults to `required`. - Allowed values: `required`, `optional` - `comment` (string, optional) — Comment the attendee sent with their response. At most 4,096 UTF-8 bytes; on create or update, a longer comment is dropped rather than rejected. - `responded_at` (datetime, optional) — Time at which the attendee last responded. ### RecurrenceDate A wall-clock date or date-time, or (timed events only) a period. ### RecurrencePeriod An extra date (RDATE) given as a period. Specify exactly one of `end` or `duration`. - `start` (string, required) — A local wall-clock time without an offset, interpreted in the event's `timezone`. Timed events use `YYYY-MM-DDTHH:mm:ss` (for example `2026-10-15T09:00:00`). All-day events use `YYYY-MM-DD`. Years must be between 1900 and 9999. - `end` (string, optional) — A local wall-clock time without an offset, interpreted in the event's `timezone`. Timed events use `YYYY-MM-DDTHH:mm:ss` (for example `2026-10-15T09:00:00`). All-day events use `YYYY-MM-DD`. Years must be between 1900 and 9999. - `duration` (string, optional) — ISO 8601 duration, for example `PT30M`. ## Examples ### Delete an event **Response** ```json { "deletion_id": "5e2b7d9f-4a1c-4e8b-b3d6-8c0a2f4e6b19" } ``` **SDK Code** ```python Delete an event import requests url = "https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/3f8a2c1e-6b4d-4e9f-a7c2-5d1b8e0f9a36" querystring = {"send_invites":"true"} headers = { "Idempotency-Key": "delete-intro-acme", "Authorization": "Bearer " } response = requests.delete(url, headers=headers, params=querystring) print(response.json()) ``` ```javascript Delete an event const url = 'https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/3f8a2c1e-6b4d-4e9f-a7c2-5d1b8e0f9a36?send_invites=true'; const options = { method: 'DELETE', headers: {'Idempotency-Key': 'delete-intro-acme', Authorization: 'Bearer '} }; try { const response = await fetch(url, options); const data = await response.json(); console.log(data); } catch (error) { console.error(error); } ``` ```go Delete an event package main import ( "fmt" "net/http" "io" ) func main() { url := "https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/3f8a2c1e-6b4d-4e9f-a7c2-5d1b8e0f9a36?send_invites=true" req, _ := http.NewRequest("DELETE", url, nil) req.Header.Add("Idempotency-Key", "delete-intro-acme") req.Header.Add("Authorization", "Bearer ") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := io.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body)) } ``` ```ruby Delete an event require 'uri' require 'net/http' url = URI("https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/3f8a2c1e-6b4d-4e9f-a7c2-5d1b8e0f9a36?send_invites=true") http = Net::HTTP.new(url.host, url.port) http.use_ssl = true request = Net::HTTP::Delete.new(url) request["Idempotency-Key"] = 'delete-intro-acme' request["Authorization"] = 'Bearer ' response = http.request(request) puts response.read_body ``` ```java Delete an event import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.delete("https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/3f8a2c1e-6b4d-4e9f-a7c2-5d1b8e0f9a36?send_invites=true") .header("Idempotency-Key", "delete-intro-acme") .header("Authorization", "Bearer ") .asString(); ``` ```php Delete an event request('DELETE', 'https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/3f8a2c1e-6b4d-4e9f-a7c2-5d1b8e0f9a36?send_invites=true', [ 'headers' => [ 'Authorization' => 'Bearer ', 'Idempotency-Key' => 'delete-intro-acme', ], ]); echo $response->getBody(); ``` ```csharp Delete an event using RestSharp; var client = new RestClient("https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/3f8a2c1e-6b4d-4e9f-a7c2-5d1b8e0f9a36?send_invites=true"); var request = new RestRequest(Method.DELETE); request.AddHeader("Idempotency-Key", "delete-intro-acme"); request.AddHeader("Authorization", "Bearer "); IRestResponse response = client.Execute(request); ``` ```swift Delete an event import Foundation let headers = [ "Idempotency-Key": "delete-intro-acme", "Authorization": "Bearer " ] let request = NSMutableURLRequest(url: NSURL(string: "https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/3f8a2c1e-6b4d-4e9f-a7c2-5d1b8e0f9a36?send_invites=true")! as URL, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 10.0) request.httpMethod = "DELETE" request.allHTTPHeaderFields = headers let session = URLSession.shared let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in if (error != nil) { print(error as Any) } else { let httpResponse = response as? HTTPURLResponse print(httpResponse) } }) dataTask.resume() ``` ### Cancel one date of a series **Response** ```json { "event": { "event_id": "7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000", "kind": "instance", "title": "Team standup", "status": "cancelled", "all_day": false, "start": "2026-10-07T09:00:00", "end": "2026-10-07T09:15:00", "timezone": "America/New_York", "duration_mode": "nominal", "duration_value": 900000, "start_at": "2026-10-07T13:00:00Z", "end_at": "2026-10-07T13:15:00Z", "attendee_count": 0, "uid": "7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47@agentmail.to", "sequence": 0, "source": "api", "created_at": "2026-10-01T16:25:00Z", "updated_at": "2026-10-02T09:30:00Z", "series_id": "7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47", "original_start": "2026-10-07T09:00:00", "original_start_at": "2026-10-07T13:00:00Z", "is_exception": false, "location": "https://meet.example.com/standup", "attendees": [], "organizer_email": "scheduler@agentmail.to", "etag": "\"occ-1-0-0-none-none\"" }, "operation_id": "0d6f1e2a-9c3b-4d5e-8f7a-6b1c2d3e4f50" } ``` **SDK Code** ```python Cancel one date of a series import requests url = "https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000" querystring = {"mode":"single"} headers = {"Authorization": "Bearer "} response = requests.delete(url, headers=headers, params=querystring) print(response.json()) ``` ```javascript Cancel one date of a series const url = 'https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000?mode=single'; const options = {method: 'DELETE', headers: {Authorization: 'Bearer '}}; try { const response = await fetch(url, options); const data = await response.json(); console.log(data); } catch (error) { console.error(error); } ``` ```go Cancel one date of a series package main import ( "fmt" "net/http" "io" ) func main() { url := "https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000?mode=single" req, _ := http.NewRequest("DELETE", url, nil) req.Header.Add("Authorization", "Bearer ") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := io.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body)) } ``` ```ruby Cancel one date of a series require 'uri' require 'net/http' url = URI("https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000?mode=single") http = Net::HTTP.new(url.host, url.port) http.use_ssl = true request = Net::HTTP::Delete.new(url) request["Authorization"] = 'Bearer ' response = http.request(request) puts response.read_body ``` ```java Cancel one date of a series import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.delete("https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000?mode=single") .header("Authorization", "Bearer ") .asString(); ``` ```php Cancel one date of a series request('DELETE', 'https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000?mode=single', [ 'headers' => [ 'Authorization' => 'Bearer ', ], ]); echo $response->getBody(); ``` ```csharp Cancel one date of a series using RestSharp; var client = new RestClient("https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000?mode=single"); var request = new RestRequest(Method.DELETE); request.AddHeader("Authorization", "Bearer "); IRestResponse response = client.Execute(request); ``` ```swift Cancel one date of a series import Foundation let headers = ["Authorization": "Bearer "] let request = NSMutableURLRequest(url: NSURL(string: "https://api.agentmail.to/v0/inboxes/scheduler%40agentmail.to/calendar/events/7c4e9b2a-1f3d-4a8e-b6c5-2e9d0f1a8b47_t20261007T090000?mode=single")! as URL, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 10.0) request.httpMethod = "DELETE" request.allHTTPHeaderFields = headers let session = URLSession.shared let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in if (error != nil) { print(error as Any) } else { let httpResponse = response as? HTTPURLResponse print(httpResponse) } }) dataTask.resume() ```