Properties
| Name | Type | Description |
|---|---|---|
| event_id | string | |
| inbox_id | string | |
| workspace_id | stringnull | |
| ical_uid | string | Stable across updates. What an update, cancellation or reply is matched on, on both ends. |
| title | string | |
| description | string | |
| location | string | |
| start_at | string | ISO 8601 UTC, e.g. 2026-09-15T19:00:00Z |
| end_at | string | ISO 8601 UTC. Exclusive for all-day events. |
| timezone | string | |
| all_day | boolean | |
| status | string | |
| organizer | object | |
| attendees | array | |
| source | string | api = created here; sent = created here and sent as an invitation; inbound = arrived by email. |
| sequence | integer | |
| message_id | stringnull | The invitation we sent, or the inbound message that last created, updated or cancelled the event. |
| invited_at | stringnull | |
| created_at | string | |
| updated_at | string |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://artifacts.apis.io/deadsimple-email/json-schema/deadsimple-email-calendar-event-schema.json",
"title": "CalendarEvent",
"x-generated": "2026-11-05",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/deadsimple-email-openapi.json#/components/schemas/CalendarEvent",
"type": "object",
"properties": {
"event_id": {
"type": "string"
},
"inbox_id": {
"type": "string"
},
"workspace_id": {
"type": [
"string",
"null"
]
},
"ical_uid": {
"type": "string",
"description": "Stable across updates. What an update, cancellation or reply is matched on, on both ends."
},
"title": {
"type": "string"
},
"description": {
"type": "string"
},
"location": {
"type": "string"
},
"start_at": {
"type": "string",
"description": "ISO 8601 UTC, e.g. 2026-09-15T19:00:00Z"
},
"end_at": {
"type": "string",
"description": "ISO 8601 UTC. Exclusive for all-day events."
},
"timezone": {
"type": "string"
},
"all_day": {
"type": "boolean"
},
"status": {
"type": "string",
"enum": [
"confirmed",
"tentative",
"cancelled"
]
},
"organizer": {
"$ref": "#/$defs/CalendarOrganizer"
},
"attendees": {
"type": "array",
"items": {
"$ref": "#/$defs/CalendarAttendee"
}
},
"source": {
"type": "string",
"enum": [
"api",
"sent",
"inbound"
],
"description": "api = created here; sent = created here and sent as an invitation; inbound = arrived by email."
},
"sequence": {
"type": "integer"
},
"message_id": {
"type": [
"string",
"null"
],
"description": "The invitation we sent, or the inbound message that last created, updated or cancelled the event."
},
"invited_at": {
"type": [
"string",
"null"
]
},
"created_at": {
"type": "string"
},
"updated_at": {
"type": "string"
}
},
"$defs": {
"CalendarAttendee": {
"type": "object",
"required": [
"email"
],
"properties": {
"email": {
"type": "string",
"format": "email"
},
"name": {
"type": "string"
},
"response": {
"type": "string",
"enum": [
"needs-action",
"accepted",
"declined",
"tentative"
],
"description": "The attendee's answer as last seen (our own rsvp, or their REPLY)."
},
"optional": {
"type": "boolean",
"description": "OPT-PARTICIPANT rather than REQ-PARTICIPANT on the invitation."
}
}
},
"CalendarOrganizer": {
"type": "object",
"properties": {
"email": {
"type": "string",
"format": "email"
},
"name": {
"type": "string"
}
}
}
}
}
Work with this as data
Every JSON Schema here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for schemas
4 MCP tools reach this
find_json_schemasBrowse and filter every JSON Schema in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This JSON Schema
curl "https://apis.io/api/v1/json-schemas/deadsimple-email-calendar-event"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"
Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.